EAON - INFO N° 55

2006,  October to December

 

180  observations have been performed during 2006, October to December  ( 38  positive or possibly positive) about  53 events 
( 16 positive or  possibly positive), by 87 observers from the 18 following countries (and numbers of observers) :

AT = Austria  ( 2 ), BE = Belgium  ( 5 ), CH = Switzerland  ( 2 ), CZ = Czech Republic  ( 4 ), DE = Germany  ( 9 ),
ES = Spain  ( 9 ), FR = France  ( 26 ), GR = Greece ( 3 ), HU = Hungary  ( 1 ), IR = Ireland ( 1 ), IT = Italy  ( 9 ),
NL = The Netherlands ( 1 ), PL = Poland ( 2 ), PT = Portugal  ( 1 ), RO = Romania (1), RU = Russia ( 2 ), UA = Ukraine ( 2 ), UK = United Kingdom  ( 7 ).

You will find in the table hereafter the list of the observers’ abbreviations in alphabetical order, with the number of observations made by each of them. Welcome to the new observers (in bold characters) !

 

AEF

Fernand  VAN DEN ABBEEL

1

BE

 

LWP

Pete  LAWRENCE

1

UK

ALY

Arnaud  LEROY

1

FR

 

MAA

Andrea  MANNA

2

CH

AZO

Tibor  AZTALOS

1

HU

 

MBU

Michel  BOUTET

7

FR

BOL

Simone  BOLZONI

1

IT

 

MID

Thierry  MIDAVAINE

with Thierry SEMAAN and Guy MADORE

2

FR

BTG

René  BOURTEMBOURG

2

BE

 

BUL

Henk  BULDER

1

NL

 

MRX

Harald  MARX

1

DE

DGG

Gerhard  DANGL

7

AT

 

MUM

Michel  MEUNIER

with Francois Colas (COF)

and Martine CASTETS (CTM)

1

FR

DKT

Thorsten  DENK

1

ES

 

DLR

Roberto  DI  LUCCA

2

IT

 

DNZ

Helmut  DENZAU

1

DE

 

NEL

Regis  NEEL

1

FR

DOD

David  DALL’OCCO

with A. SANTAGADA

1

IT

 

NNE

Claude  NINET

1

FR

 

ODC

Olivier  DECHAMBRE

2

FR

DPY

Michel  DUPOUY

with Claudine  RINNER (RNC)

1

FR

 

ohp

Haute-Provence Observatory

1

FR

 

OJR

Jose  RIPERO  OSORIO

2

ES

DVA

Athanasios  DOUVRIS

1

GR

 

OKE

Oliver  KLOES

1

DE

EEA

Andreas  EBERLE

with  Otto  FARAGO (FAR)

1

DE

 

OTA

Otta  SANDOR

1

CZ

 

PAR

Michael  PARL

2

DE

ELL

Andrew  ELLIOTT

3

UK

 

PAW

Thierry  PAUWELS

with  Pierre  VINGERHOETS (VIG)

with Peter  De CAT

2

BE

FAP

Pierre  FARISSIER

1

FR

 

1

FAR

Otto  FARAGO

with Andreas  EBERLE  (EEA)

5

DE

 

1

1

 

PCI

Paolo  CORELLI

4

IT

FRI

Carlo FRISONI with  Giulio BUSI (BSI)

2

IT

 

PEC

Carlos  PERELLO

with  C. BASTUS and  E. FORNER

with R. CASAS (CAS),
A. ARDANUY (AUY) and V. OLIVA

 

ES

FRP

Eric  FRAPPA

with Maylis  LAVAYSSIERE  (LVY)

1

FR

 

1

 

1

FST

Franz  STARK

1

DE

 

GAR

Faustino GARCIA de la CUESTA

3

ES

 

PRT

E.  PIERANTONI with L.  BARBIERI

1

IT

GCV

Rui  GONCALVES

4

PT

 

PSY

Raymond  PONCY

1

FR

GKB

Bernd  GAEHRKEN

1

DE

 

RSG

Gerald  ROUSSEAU

1

FR

GRS

Christian  GROS

1

FR

 

RTH

Wolfgang  ROTHE

4

DE

IMV

Ivan  MHITAROV

with Vlad ONOPRIENKO (OPI)

1

RU

 

SCE

Ladislav  SMELCER

1

CZ

 

SHI

Michael  SCHMID

1

AT

JFC

Jean  Francois  COLIAC

2

FR

 

SLO

Wieslaw  SLOTWINSKI

1

PL

JGS

Malcolm  JENNINGS

2

UK

 

SMD

Libor  SMID

2

CZ

JHP

Jon  HARPER

1

UK

 

SPL

Jerzy  SPEIL

1

PL

JLX

Jean  LECACHEUX

with F. COLAS (COF)

5

FR

 

SPS

Stefano  SPOSETTI

8

CH

2

 

STP

Roger  STAPLETON

1

UK

JNK

Tomas  JANIK

1

CZ

 

SWM

Mike  SWAN

1

IR

JSZ

Jacques  SANCHEZ

2

FR

 

trt

TAROT (see below)

52

FR

JVA

Jean  VILAR

1

FR

 

TSV

Vagelis  TSAMIS

1

GR

KAD

Dimitrios  KAPETANAKIS

1

GR

 

TVH

Tim  HAYMES

1

UK

KVF

Fedir  KRAVTSOV

with  Igor  LUKYANYK

1

UA

 

VDC

Gerard  VAUDESCAL

with  J. CAQUEL (CQU)

1

FR

 

2

KYV

Victor  KAZNOVSKY

1

RO

 

WRD

Dave  WRIGHT

1

UK

 

TAROT (Acronym for “Télescope à Action Rapide pour les Objets Transitoires”) is an automatic telescope, located at Calern Observatory, dedicated to g-rays bursts optical study; when available, it can be used for various survey programs.


 

 

2006 (October to December) Observations

 

Observations are visual and negative, excepted when otherwise specified. All times are in UTC.

 

2006.10.01 : ( 4766 ) Malin / HIP 18993               ELL     JLX      LWP    SWM   TVH     WRD

ELL, TVH  : videorecording ; JLX , TVH, WRD : many interruptions due to clouds; LWP : CCD drift scan

Incertitude was great for this small asteroid (12 km) but the star was visible with naked eye

 

2006.10.05 : ( 997 ) Priska / TYC 5182-00551-1                                      MBU    PEC     VDC with CQU

PEC : with CAS, AUY and V. OLIVA, CCD imaging; VDC : CCD drift scan

Incertitude was very great for this small asteroid (19 km)

2006.10.06 : ( 406 ) Erna / TYC 1396-00751-1                                         VDC with CQU

VDC : CCD drift scan

2006.10.07 : (1390 ) Abastumani / TYC 2910-00619-1               

Only two positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

DKT

N 36 49 40.4

W 02 26 44.8

+30 m

?

?

4 to 5 s

GCV

N 39 31 22.6

W 08 23 01.5

+90 m

23:21:59.55 ±0.13 s

23:22:03.70 ±0.13 s

4.15 ±0.25s

GCV : CCD imaging. The two observations are coherent with a shift of the shadow path, a quarter of its width and toward south, relative to the predicted one (GCV was just outside it, close to its southern border, and DKT nearly on the centreline).

 

2006.10.07 : ( 1358 ) Gaika / 2UCAC 40651606                          DGG    OKE    SPS

DGG : CCD imaging ; OKE : videorecording ; SPS : CCD drift scan.

2006.10.08 : ( 409 ) Aspasia / TYC 1722-00810-1                        JNK     MAA    OTA    PAR    SLO
                                                                                                        SMD    SPL      SPS      trt

and seven positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

SCE

N 49 27 50

E 17 58 31   

+333 m

21:23:52.8 ±1 s

21:24:01.5 ±1 s

8.7 ±0.1 s

DGG

N 48 47 13.4

E 15 14 08.3

+552 m

21:24:06.10 ±0.01s

21:24:20.94  ±0.01 s

14.84 ±0.25 s

SHI

N 48 13 55

E 16 20 01

+240 m 

21:24:07.9 ±0.15 s

21:24:14.85 ±0.10 s

6.95 ±? s

GKB

N 47 22 43

E 13 30 51

+1000 m

21:24:21.4  ±? s

21:24:36.12 ±? s

14.72 ±? s

PCI

N 46 05 49.9

E 13 11 00.9

+140 m

21:24:32.8  ±0.3 s

21:24:41.95 ±0.3 s

9.15 ±0.3 s

DLR

N 44 47 12.2 

E 11 08 00.1

+20 m

21:24:48.92 ±0.04 s

21:25:00.84 ±0.04 s

11.92 ±0.08 s

FRI

N 44 21 28 

E 11 09 13 

+651 m

21:24:54.52  ±0.24 s

21:25:00.28 ±0.24 s

5.76 ±0.48 s

DLR, videorecording : D instantaneous, but R not instantaneous (2 frames)

FRI : with G. Busi (BSI) ; JNK : no occultation longer than 0.5 s; OTA : 0.8 s blink probably spurious at 21:24:15.65 ±0.2 s

DGG: CCD imaging; PAR, SHI : videorecording; PCI, SCE, SPS  : CCD drift scan

Reduction of the observations shows the prediction to be exact. Chords can be fitted by a nearly circular profile (177 × 184 km), slightly larger than the mean diameter used for calculations (162 km).

 

2006.10.08 : ( 1996 ) Adams / TYC 1204-00063-1                                    JLX      PCI      SMD   SPS

JLX, SMD  : videorecording ; PCI, SPS : CCD drift scan

Several observers were very close to the predicted shadow path but incertitude was great for this small asteroid (13 km).

2006.10.09 : ( 200 ) Dynamene / TYC 5230-01513-1      

Five positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

DGG

N 48 47 31.0

E 15 13 58.6

+559 m

00:41:36.24 ±0.16 s

00:42:13.04 ±0.16 s

36.8 ±0.25 s

FAR

N 48 46 56.73

E 09 11 47.35

+350m

00:42:32.9 ±0.2 s

00:42:54.8 ±0.2 s

21.9 ±? s

GRS

N 47 07 35

E 06 03 11

+505 m

00:42:26.36 ±0.23 s

00:42:51.53 ±0.23 s

25.17 ±? s

JLX

N 46 31 09.8

E 01 50 18.1

+307 m 

D1 00:42:45.25  ±1s

D2 00:42:54.45 ±0.65s

00:43:22.25 ±0.1 s

27.8 ±0.7 s

RSG

N 47 10 09.3 

E 00 16 31.8

+114 m 

00:43:20.8 ±?

00:43:57.55 ±? s

36.75 ±? s

DGG : CCD imaging; FAR : videorecording; RSG : CCD drift-scan; GRS : Star hidden by clouds after 00:46:20.86.

JLX : D1 : possible 0.2 mag. drop, more probably an atmospheric artefact; D2 : major extinction of the star, undoubtedly the real immersion, R : instantaneous reappearance.

Transatlantic event, nine positive observations have been performed in the USA.  Reduction of observations shows the prediction to be exact. Chords can be fitted with a 136 × 123 km elliptic profile, in perfect agreement with the 128 km -mean diameter used for calculations.


 

2006.10.14 : ( 6723 ) Chrisclark / TYC 1222-00874-1                  DGG

DGG: CCD imaging, partial observation due to clouds.

2006.10.16 : ( 1094 ) Siberia / TYC 0140-01368-1                       FAR     PAW    SPS      trt

FAR : videorecording; PAW : CCD imaging, SPS : CCD drift-scan.

2006.10.17 : ( 18827 ) 1999NA26 / TYC 1350-00976-1               DGG

DGG: CCD imaging

2006.10.23 : ( 2600 ) Lumme / 2UCAC 30627320                        KYV

2006.10.23 : ( 177 ) Irma / TYC 605-01171-1

Only one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

RTH

N 52 28 10.0

E 13 28 57.6

+37 m

21:12:54.75 ±0.1 s

21:13:03.05 ±0.1 s

8.3 ±0.2 s

RTH : CCD imaging, was effectively in the shadow path, close to the predicted centreline. Note the max predicted duration was 11.4 s.

2006.10.27 : ( 42367 ) 2002CQ134 / TYC 0536-00619-1 PEC

PEC : with  C. Bastus and  E. Forner, videorecording

2006.10.28 : ( 488 ) Kreusa / 2UCAC 38754612                          GAR

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

GCV

N 39 31 22.6

W 08 23 01.5

+90 m

04:40:17.9 ±0.2 s

04:40:42.4 ±0.2 s

24.5 ±? s

GAR : survey did not include the appulse time

2006.10.30 : ( 55 ) Pandora / TYC 1419-00008-1             trt

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

FAR

N 48 46 56.64

E 09 11 47.12

+351 m

02:39:50.16 ±0.01 s

02:39:51.96 ±0.01 s

1.80 ±0.02 s

FAR was effectively in the shadow path, close to the predicted centreline. Note the max predicted duration was 2.5 s.

2006.10.31 : ( 51 ) Nemausa / TYC 0233-00548-1                       JFC      trt

and three positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

DLR

N 44 24 33.95

E 11 07 44.25

+230 m

04:32:54.20 ±0.04 s

04:33:01.24 ±0.04 s

7.04 ±0.08 s

FAP

N 45 31 33.3

E 05 08 41.3

+350 m

04:32:36.9 ±0.6 s

04:32:42.4 ±0.4 s

5.45 ±0.5 s

FRP

N 45 22 47.4

E 04 33 54.3

+1370 m

04:32:35.83 ±0.01 s

04:32:40.00 ±0.01 s

4.17 ±0.01 s

DLR : videorecording; FRP : with LVY, CCD imaging; JFC : CCD drift scan

The shape of (51) Nemausa is known to be elongated : an elliptic 166 ×123 km profile has been deduced from the 1983.11.09 event, involving HIP 116323  (information from WINOCCULT[1] database). This can explain why DLR observed an event with duration greater than the max predicted one (6.3 s, based on a 148 km mean diameter). The three chords seem to draw half of an elliptic profile with short axis parallel to the asteroid motion.

The path must have been shifted toward north, by about half of its width (based on the 148 km mean diameter), since DLR was close to the predicted northern border and but was probably close to the real centreline.

 

2006.11.02 : ( 880 ) Herba / TYC 02365-00565-1                         JFC

JFC : CCD drift scan

2006.11.02 : ( 986 ) Amelia / TYC 1297-01073-1             DPY with RNC     JSZ    MBU  

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

NNE

N 44 41 29.6

W 00 59 08.6

+35 m

05:29:34.8 ±0.2 s

05:29:43.1 ±? s

8.3 ±0.1 s

DPY, NNE : CCD drift scan

NNE was nearly on the real centreline as he effectively observed an event with duration close to max predicted one (8.7 s). His observation and JSZ and MBU negative ones (both in the predicted path) are coherent with a shift of the path, half of its width and toward north, relative to the prediction.

 

2006.11.04 : ( 76 ) Freia / TYC 0587-00209-1                              KVF

KVF : with I.V. Lukyanyk, CCD drift scan

2006.11.06 : ( 5505 ) Rundetaarn / TYC 2433-01084-1               VDC

VDC : CCD drift scan


 

2006.11.07 : ( 1342 ) Brabantia / TYC 3278-00156-1                   BTG     PAW with VIG

PAW : CCD imaging, no occultation > 0.5 s

The observers were at immediate vicinity of the predicted shadow path but incertitude was great for this small asteroid
(18 km).

2006.11.10 : ( 582 ) Olympia / TYC 6505-00790-1                       GAR    GCV

GCV : videorecording

2006.11.10 : ( 530 ) Turandot / TYC 0277-00277-1                      BOL    JSZ      MBU

JSZ and MBU in double station

2006.11.12 : ( 154 ) Bertha / TYC 2361-00836-1              GCV    IMV with OPI    MAA   NEL     OJR

and seven positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

PRT

N 44 31 36.6 

E 11 31 11.4

+25 m

21:00:23.24 ±0.3 s

21:00:32.24 ±0.3 s

9.0 ±0.65 s

DOD

N 44 34 04

E 11 18 11

+27 m

21:00:25 ±0.5 s

21:00:34 ±0.5 s

9 ±1 s

FRI

N 44 21 28.5

E 11 09 13.1

+651 m

21:00:26.20 ±0.04 s

21:00:33.40 ±0.04 s

7.2 ±? s

trt

N 43 45 08

E 06 55 26

+1270 m

21:00:43.84 ±0.5 s

21:00:51.46 ±0.5 s

7.62 ±? s

ohp

N 43 55 56.8

E 05 42 52.4

+640 m

21:00:45.62 ±0.2 s

21:00:56.48 ±0.2 s

10.86±? s

PSY

N 43 38 49

E 03 56 29

+45 m

21:00:51.8 ±0.5 s

21:01:02.6 ±0.5 s

10.8 ±? s

MBU

N 43 30 06.7

E 01 17 20.2

+178 m 

21:01:04.1 ±0.10 s

21:01:14.7 ±0.06 s

10.39 ±? s

PRT with L. Barbieri, FRI with G. Busi (BSI), GCV : videorecording; IMV : CCD imaging;

ohp (observer : Y. Damerdji), PSY : CCD drift scan;  DOD : with A. Santagada

Observations (especially IMV negative one) show the path to be shifted toward north by a third of its width, relative to the prediction.

Chords are scattered but can be fitted with an elliptic profile (160 ×180 km, with long axis parallel to the asteroid motion), significantly smaller than the mean diameter used for calculations (185 km).

 

2006.11.15 : ( 356 ) Liguria / 2UCAC 41657910              MBU

Difficult visual observation (0.35 mag drop only)

2006.11.15 : ( 275 ) Sapientia / TYC 0679-00545-1                      MBU

2007.11.16 : ( 2215 ) Sichuan / 2UCAC 39096847                       AZO

AZO was at immediate vicinity of the predicted shadow path but incertitude was great for this small asteroid (15 km).

2006.11.19 : ( 698 ) Ernestina / TYC 1969-01062-1                     ELL

2006.11.19 : ( 660 ) Crescentia / TYC 6298-1425-1                     OJR

2006.11.21 : ( 1242 ) Zambesia / 2UCAC 40799496                    JGS      JHP

JGS : videorecording, was in the predicted path but registered many interruptions due to clouds

2006.11.21 : ( 300 ) Geraldina / 2UCAC 40315935                      STP

STP : CCD drift-scan, was just on the predicted centreline.

2006.11.29 : ( 578 ) Happelia / TYC 1908-00844-1                      EEA with FAR  

and three positive observations :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

JLX

N 48 48 18.0

E 02 13 48.4

+170 m

00:18:00.19 ±0.02 s

00:18:04.69 ±0.04 s 

4.50 ±0.05 s

MUM

N 48 24 54

E 02 34 15

+74 m

00:17:56.36 ±0.04 s

00:18:30.10 ±0.04 s

00:18:03.84 ±0.04 s

00:18:32.26 ±0.04 s

7.48 ±0.04 s

2.16 ±0.04 s

ODC

N 48 45 08

E 02 00 08

+168 m

00:18:01.14 ±0.04 s

00:18:06.85 ±0.04 s

5.71 ±0.04 s

JLX, ODC : videorecording; MUM : CCD drift-scan, double event, with F. Colas (COF) and M. Castets (CTM)

Target star is known as a binary (171" separation, B at PA = 303° from A); MUM effectively registered distinct occultation of each of the two components, the other observers only the first component. Chords can be fitted with an elliptic 92 ×72 km, to be compared with the 69 km mean diameter used for calculations. An elliptic 83×58 km profile has been deduced from the 2004.05.23 event, involving TYC 6161-01208-1 (information from WINOCCULT database).

 

2006.11.30 : ( 881 ) Athene / 2UCAC 38907503                          SPS

SPS : CCD drift-scan, was at immediate vicinity of the predicted shadow path but incertitude was great for this asteroid.

2006.11.30 : ( 3168 ) Lomnicky Stit / TYC 2377-00367-1            RTH

RTH : videorecording

2006.12.05 : ( 89 ) Julia / TYC 0838-00135-1                               DGG

DGG : videorecording

2006.12.07 : ( 1681 ) Steinmetz / TYC 1412-00855-1                   JLX

A 1 s -long blink beginning at 02:52:56.0 ±0.4 s (for an appulse predicted at 02:52:27 UT ±27s) was more probably a maximum of the cloud absorption.


 

2006.12.10 : ( 4790 ) Petrpravec / TYC 0057-00246-1                

only one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

BUL

N 52 56 20.5

E 06 52 48.8

+8 m

02:14:59.8 ±0.2 s

02:15:01.4 ±0.3 s

1.6 s ±0.2 s

BUL’ station was situated 30 km south of predicted central line, and the observed event occurred 10 s later than predicted, so it may not be related to (4790) Petrpavec.

2006.12.12 : ( 998 ) Bodea / 2UCAC 35859779                            RTH

RTH : videorecording, no occ. > 0.3 s

2006.12.12 : ( 8701 ) 1993LG2 / 2UCAC 35870485                     PAW with P. de Cat

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

RTH

N 52 28 10.0

E 13 28 57.6

+37 m

18:07:47.00 ±0.03 s

18:07:49.74 ±0.03 s

2.74 ±0.05 s

PAW : many interruptions due to clouds; RTH : videorecording, no other significant dimming observed, longer than the exposure time; it must be noted that RTH observed a low-probability event, with duration significantly longer than the predicted one (2 s, deduced from an estimated 18 km diameter).

 

2006.12.13 : ( 1804 ) Chebotarev / TYC 1222-00422-1                PAR     SPS

PAR : videorecording; SPS : CCD drift-scan

2006.12.14 : ( 4768 ) Hartley / 2UCAC 47818442                        DGG    FAR

DGG, FAR : videorecording

2006.12.14 : ( 498 ) Tokio / TYC 1896-00440-1                           JVA     PCI

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

FAR

N 48 46 56.64

E 09 11 47.12

+351m

02:10:55.54 ±0.01 s

02:11:01.58 to 62 ±0.01 s

6.04 to 6.08 s

FAR : videorecording, the reappearance was gradually on 3 frames; JVA, PCI : CCD drift-scan

The observations show the shadow path has been shifted, by about its width and toward north, relative to the predicted one: JVA and PCI were in the predicted path and FAR was close to the real centreline, as he observed an event with duration nearly equal to the max predicted one (6.7 s).

 

2007.12.15 : ( 11875 ) 1989YG5 / HIP 33595                               FST

FST : videorecording;  incertitude was great for this small asteroid (13 km).

2006.12.15 : ( 494 ) Virtus / 2UCAC 42729305                            MBU   MRX

2006.12.16 : ( 972 ) Cohnia / 2UCAC 35135503                           ELL     JGS

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

DNZ

N 54 20 34

E 10 33 06

+40 m   

18 24 06.78 ±0.04 s

18 24 10.64 ±0.04 s

3.86 ±? s

DNZ, ELL, JGS :  videorecording ; ELL : interruption due to clouds, from 18:10:05 to 29 for an appulse time at 18:23:10

Reduction of observations shows the path has been shifted toward south, by about half of its width, since DNZ was close to the southern path border and observed an event with duration close to the max predicted one (4.5 s). ELL was close to the northern edge of the track.

 

2006.12.19 : ( 116 ) Sirona / TYC 1419-00555-1                                     

Two chords, obtained from the same station :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

MID

N 48 17 30.4

E 02 26 16.9

+137 m

05:58:31.12 ±0.02 s

05:58:38.86 ±0.04 s

7.74 ±0.05 s

MID

N 48 17 30.4

E 02 26 16.9

+137 m

05:58:31.11 ±0.04 s

05:58:38.82 ±0.04 s

7.71 ±0.06 s

MID : CCD drift scan and videorecording,  with Thierry Semaan and Guy Madore

 

2006.12.20 : ( 393 ) Lampetia / TYC 0168 02120-1                                  JLX with COF

JLX : CCD imaging

Transatlantic event. In Europe, path was expected across Spain (north of Madrid) and n.Portugal, according to S.Preston's update. Pic-du-Midi observatory was situated 232 km N from shadow path, measured on the ground.

A positive observation performed in USA by Roger Harvey (at W 80 33 28.4, N 35 22 24.4, 219 m, 4.5 s  duration, from 06:06:27.2  to 06:06:31.7 ) showed that the prediction was accurate.

 

2007.12.22 : ( 547 ) Praxedis / TYC 4822-02645-1                       JLX with COF

JLX : CCD imaging

Transatlantic event. Path was expected across the SW of France, midway between Bordeaux  and Pic-du-Midi, according to S.Preston's update (Pic-du-Midi observatory was situated 132 km NNW from shadow path, measured on the ground).

 

2007.12.22 : ( 2934 ) Aristophanes / TYC 0675-00594-1 AEF     ALY    ODC    PAW    SPS     trt

and one positive observation :

Abbr

Latitude

Longitude

Height

Disappearance UT

Reappearance UT

Duration

BTG

N 50 17 40.5

E 05 06 25.8

+321 m

18:31:10.25 ±0.5 s

18:31:11.28 ±0.5 s

1.0 ± ? s

AEF, SPS : CCD drift-scan; ALY, ODC : videorecording; PAW : CCD imaging

The max predicted duration was 2.5 s for a 28 km diameter. AEF was less than one shadow path width toward SE from BTG.

The first BTG positive asteroidal occultation since 1982 !

 

2007.12.26 : ( 3966 ) Cherednichenko / TYC 1854-00849-1        GAR    trt

2007.12.27 : ( 1545 ) Thernoe / TYC 1901-00044-1                     PCI      SPS      trt

PCI, SPS : CCD drift-scan

2006.12.30 : ( 4157 ) Izu / TYC 2440-00609-1                              DVA    KAD    TSV     trt

TSV : videorecording

The three observers DVA, KAD and TSV were in triple station, in the predicted path.

Their negative observations show the real path has been shifted. The lack of positive observation lets the position of the real path remaining unknown.

 

The 43 following events have been observed by TAROT only – all negative results :

2006/10/01        (5571)    1978 LG / TYC 1176-00844-1                2006/10/03         (5505)      Rundetaarn / TYC 2428-00117-1

2006/10/07        (3461)   Mandelshtam / TYC 6356-00462-1      2006/10/08           (572)      Rebekka / TYC 0772-00671-1

2006/10/14        (1258)   Sicilia / TYC 5226-00152-1                    2006/10/16         (1701)      Okavango / TYC 2467-00719-1

2006/10/16        (3788)   Steyaert / TYC 0744-01575-1                2006/10/22         (5357)      1992 EL / TYC 1398-01997-1

2006/10/22      (14201)   1998 XR92 / 2UCAC 39612715             2006/10/27         (6683)      Karachentsov / 2UCAC 39431147

2006/10/27        (8839)   Novichkova / TYC 1351-00618-1         2006/10/28         (3001)      Michelangelo / TYC 2945-01591-1

2006/10/30      (27259)   1999 XS136 / TYC 1711-01793-1          2006/11/01         (2414)      Vibeke / TYC 2308-02172-1

2006/11/08      (20985)   1981 EA35 / TYC 2973-01211-1            2006/11/12           (613)      Ginevra / TYC 1789-00688-1

2006/11/18        (1003)   Lilofee / TYC 6336-01951-1                  2006/12/11         (1983)      Bok / TYC 2448-00502-1

2006/12/15      (17445)   Avatcha / TYC 2446-00886-1               2006/12/16       (16507)      Fuuren / TYC 1247-01102-1

2006/12/16        (3436)   Ibadinov / TYC 1341-01624-1              2006/12/17           (253)      Mathilde / TYC 0740-00562-1

2006/12/17        (3470)   Yaronika / 2UCAC 39280945                2006/12/19         (1625)      The NORC / 2UCAC 45943434

2006/12/19          (258)   Tyche / TYC 0105-02453-1                   2006/12/20         (2717)      Tellervo / 2UCAC 37485027

2006/12/20        (8804)   Eliason / TYC 1807-01036-1                 2006/12/20         (2504)      Gaviola / TYC 1876-00994-1

2006/12/20          (955)   Alstede / TYC 2449-00271-1                2006/12/20       (18827)      1999 NA26 / 2UCAC 38778654

2006/12/22        (2919)   Dali / TYC 1253-00645-1                       2006/12/22         (3563)      Canterbury / 2UCAC 40137464

2006/12/23        (1599)   Giomus / 2UCAC 42021427                  2006/12/24           (693)      Zerbinetta / 2UCAC 46554764

2006/12/24      (11536)   1992 FZ / HIP 18189                              2006/12/24           (623)      Chimaera / 2UCAC 45640288

2006/12/25        (1113)   Katja / TYC 2898-02915-1                     2006/12/26         (3470)      Yaronika / TYC 1311-02724-1

2006/12/26      (34532)   2000 SO213 / TYC 1870-01639-1          2006/12/26         (3759)      Piironen / TYC 5517-01239-1

2006/12/27        (1730)   Marceline / TYC 0732-01930-1             2006/12/28       (17839)      1998 HN95 / 2UCAC 32352422

2006/12/30        (2894)   Kakhovka / 2UCAC 39620455            

 

Reports are diffused on Internet by “PLANOCCULT”. To subscribe to this free service, send an E-Mail to listserv@Aula.com with the following text : subscribe planoccult Your Name, Your Country -and to unsubscribe, send an e-Mail to listserv@Aula.com, with text : unsubscribe planoccult.

Received reports and results are summarized on www.euraster.net, a web page maintained by Eric FRAPPA from Saint-Etienne Observatory.

Predictions with finder charts and up-dated shadow path are regrouped on the EAON web-site: http://astrosurf.com/eaon, maintained by Jean SCHWAENEN.

 

It is necessary to send a report even if there has been no occultation from your place (negative observation). These negative observations can sometimes be of as great interest as positive ones : they can be decisive to determine the shape (“shepherd observations”), refine the orbit of the asteroid or discover un unknown satellite !  

Please DON’T FORGET to use the IAU format YYMMDD for the date of your reports.

Clear skies for all.

 

G. REGHEERE gillesregheere@yahoo.fr

96 rue de Mercantour

78310  Maurepas    -   France


 

[1] WINOCCULT is a software developed by D. HERALD, dedicated to prediction of asteroidal occultation and reduction of observations.