|
EAON - INFO N° 462004, JANUARY to MARCH |
199 observations (31 possibly positive) have been performed between January and March, about of 52 events (11 possibly positive) by 120 observers, from the 17 following countries (and numbers of observers) :
AT = Austria (4), BE =
Belgium (7), BG = Bulgaria (3), BY = Belarus (2), CH = Switzerland (2),
CZ = Czech Republic (4), DE = Germany (16), ES = Spain (5), FR = France (35), HU
= Hungary (1), IT = Italy (11),
NL = The Netherlands (7), PL = Poland (2), PT = Portugal (1), RU = Russia (2),
UA = Ukraine (1),
UK = United Kingdom (17).
SPS who observed from IT and CH has been counted as a Swiss observer. 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.
amg |
ARMAGH Observatory Obs. : Apostolos CHRISTOU (ACH), Amir AHMAD, Ignacio UGARTE, John Mac FARLAND, David ASHER |
3 |
UK |
|
HMG |
Hazel Mac GEE |
4 |
UK |
|
HRB |
Herbert RAAB |
2 |
AT |
||||
|
HRU |
Harrie G. J. RUTTEN |
1 |
NL |
||||
|
HSC |
Chris HILLS |
2 |
UK |
||||
AZO |
Tibor AZTALOS |
1 |
HU |
|
IBL |
Ingeborg BLOMMERS |
1 |
NL |
bao |
Belogradchik Astronomical Obs. |
1 |
BG |
|
IMV |
Ivan MHITAROV with Vlad ONOPRIENKO (OPI) |
1 |
RU |
Observers : JELEV, PESSEV, KURTEV |
|
|||||||
BAO |
Stefano BASSO |
1 |
IT |
|
JGS |
Malcolm JENNINGS |
3 |
UK |
BCL |
Philippe BERNASCOLLE |
2 |
FR |
|
JHP |
Jon HARPER |
5 |
UK |
BDR |
Eberhard BREDNER |
1 |
DE |
|
JII |
Christian JASINSKI |
1 |
FR |
BFF |
Pietro BARUFFETTI |
1 |
IT |
|
JLX |
Jean LECACHEUX |
3 |
FR |
BGS |
Jean BOURGEOIS |
1 |
BE |
|
JNK |
Tomas JANIK |
7 |
CZ |
BKN |
Bernd BRINKMANN |
1 |
DE |
|
JQT |
Pierre JONQUET |
1 |
FR |
BLM |
Lex BLOMMERS |
1 |
NL |
|
JSA |
Jiri SRBA |
1 |
CZ |
BOL |
Simone BOLZONI |
19 |
IT |
|
JVA |
Jean VILAR |
1 |
FR |
1 |
|
JVB |
Jeremie VAUBAILLON with Jonatan NORMAND and Julien LECUBIN |
1 |
FR |
|||
BTG |
Rene BOURTEMBOURG |
2 |
BE |
|
||||
BTH |
Jerome BERTHIER |
1 |
FR |
|
KBY |
Geoff KIRBY |
1 |
UK |
with Frederic VACHIER (FVC) |
|
KHL |
Mike KOHL |
1 |
DE |
|||
BUL |
Henk BULDER |
2 |
NL |
|
LBA |
Laurent BERNASCONI with Pierre ANTONINI (ATI) |
1 |
FR |
CAS |
Ricard CASAS |
1 |
ES |
|
||||
CHR |
Bernard CHRISTOPHE with Jean-Marie VUGNON (JVG) |
1 |
FR |
|
LEI |
Frank LEITER |
2 |
DE |
|
LPG |
Lionel PARMEGIANNI |
1 |
FR |
||||
CKE |
Michael CLARKE |
1 |
UK |
|
LPP |
Lido PROSPERI |
1 |
IT |
CNS |
Oscar CANALES MORENO |
6 |
ES |
|
MAA |
Andrea MANNA |
2 |
CH |
COF |
Francois COLAS |
1 |
FR |
|
MBU |
Michel BOUTET |
1 |
FR |
CRB |
Massimo CORBISIERO |
1 |
IT |
|
MID |
Thierry MIDAVAINE with O. DECHAMBRE and D. NGUYEN |
1 |
FR |
DEF |
Fabrice DELABROSSE |
1 |
FR |
|
||||
DGE |
Patrick DEGRELLE |
4 |
FR |
|
MLS |
Richard MILES |
7 |
UK |
DGG |
Gerhard DANGL |
1 |
AT |
|
MRX |
Harald MARX |
1 |
DE |
DKC |
Monique De KOCK |
1 |
NL |
|
NBL |
Wim NOBEL |
1 |
NL |
DLR |
Roberto DI LUCA with Carlo FRISONI (FRI) |
1 |
IT |
|
NND |
Dominique NAILLON |
1 |
FR |
1 |
|
NNE |
Claude NINET |
1 |
FR |
|||
DNZ |
Helmut DENZAU |
1 |
DE |
|
NVI |
Vitali NEVSKI |
6 |
BY |
DPY |
Michel DUPOUY |
1 |
FR |
|
OKE |
Oliver KLOES with Stefan MESSER (MSS) |
1 |
DE |
DSS |
Raymond DUSSER |
1 |
FR |
|
4 |
|||
ELL |
Andrew ELLIOTT |
3 |
UK |
|
OTA |
Otta SANDOR |
2 |
CZ |
FAR |
Otto FARAGO |
1 |
DE |
|
PAH |
Hilari PALLARES ALBALAT |
2 |
ES |
FRP |
Eric FRAPPA with Maylis LAVAYSSIERE (LVY) |
1 |
FR |
|
PAR |
Michael PARL |
5 |
DE |
|
PAW |
Thierry PAUWELS with P. VINGERHOETS (VIG) and P. De CAT |
1 |
BE |
||||
GBL |
Alfons GABEL |
1 |
DE |
|
||||
GCV |
Rui GONCALVES |
1 |
PT |
|
PSY |
Raymond PONCY |
1 |
FR |
GMI |
Gianluca MASI |
1 |
IT |
|
PUI |
Bruno PULCINELLI |
1 |
IT |
HCP |
Claus Peter HEIDMANN |
2 |
DE |
|
PUM |
Michel PUJOL |
1 |
FR |
(cont.)
RGD |
Jean RIGAUDIN |
1 |
FR |
|
STH |
Adam STEPHENS |
1 |
UK |
with Christian SAUZEAUD (SZU) |
|
STP |
Roger STAPLETON |
2 |
UK |
|||
ROY |
Rene ROY |
1 |
FR |
|
STV |
Jeff STEVENS |
1 |
UK |
SBL |
Saul BLANCO LANZA |
2 |
ES |
|
SUP |
Sergey E. SHURPAKOV |
4 |
BY |
SCB |
Carles SCHNABEL |
2 |
ES |
|
THO |
Bertrand THOORIS |
4 |
BE |
SCE |
Ladislav SMELCER |
1 |
CZ |
|
TPT |
Terry PLATT |
1 |
UK |
SHI |
Michael SCHMID with Hans JASICEK (HJI) |
1 |
AT |
|
TPY |
Thomas PAYER |
1 |
DE |
1 |
|
trt |
TAROT (see below) |
9 |
FR |
|||
SKC |
Boris SKORITCHENKO |
1 |
UA |
|
UTF |
Ugo TAGLIAFERRI |
1 |
IT |
SLO |
Wieslaw SLOTWINSKI |
1 |
PL |
|
VAI |
Franck VAISSIERE With Jeremie VAISSIERE |
1 |
FR |
SMI |
Michael SCHMIDT |
1 |
DE |
|
||||
SPL |
Jerzy SPEIL |
1 |
PL |
|
WKL |
Jan Maarten WINKEL |
1 |
NL |
SPS |
Stefano SPOSETTI |
3 |
CH |
|
WLL |
Herman WILLAERT |
1 |
BE |
1 |
IT |
|
WSG |
Wolfgang STRICKLING |
1 |
DE |
||
SPU |
Klaus SPRUCK |
2 |
DE |
|
|
|
|
|
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.
2004 (January to March) Observations
Observations are usually visual and negative, excepted when otherwise specified. All times are in UTC.
2004/01/05 : (34) Circe / TYC 0745-01060-1 JNK
2004/01/10 : (447) Valentine / TYC 1888-00539-1 JHP PAR STP
PAR : videorecording; STP : CCD drift scan. JHP was in the updated predicted path but his survey has been disturbed by clouds.
2004/01/11 : (55565) 2002 AW 197 / TYC 0812-01640-1 CKE CNS HSC
IMV (with OPI) MLS PAR trt
2002 AW 197 is a Kuiper Belt Object. PAR : videorecording; observation disturbed by clouds. MLS : two telescopes with CCD imaging.
2004/01/15 : (447) Valentine / TYC 1887-00708-1 JGS
JGS : videorecording
2004/01/20 : (34) Circe / TYC 0744-00108-1 BOL
2004/01/25 : (361) Bononia / TYC 6763-01551-1 COF HMG JLX
and two positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
BCL |
43 24 38 N |
05 52 29 E |
+275 m |
04:53:17.5 ± 0.6 s |
04:53:23.7 ± 0.3 s |
6.2 ± 0.6 s |
PSY |
43 38 49 N |
03 56 29 E |
+45m |
04:53:13.0 ± 0.5 s |
04:53:14.8 ± 0.5 s |
1.8 ± 0.2 s |
COF : CCD imaging; PSY : CCD drift-scan; short trail interruption at 04:53:19.9 but rather due to bad seeing conditions.
(361) Bononia was involved in an event on 2002/01/31 (cf. Info 37) and is supposed to be a double asteroid. The uncertainty in PSY computer internal time (±0.5 s ) does not allow to settle the question of duplicity : if he was fast, the chords are coherent with a single body 144 km in diameter. If he was late, two bodies are necessary. If he was right, Bononia should be double or a single elongated body ~200 ´ ~100 km.
These observations are in good agreement with J. MANEK's update, as the real path was shifted 0.5 path width toward south.
2004/01/29 : (308) Polyxo / HIP 27972 AZO BAO BOL DGE FRP (with LVY) JHP SPS STP STV THO
and three positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
JSA |
49 20 41.1 N |
17 59 52.0 E |
+389 m |
23:06:33.2 ± 0.25 s |
23:06:51.45 ± 0.25 s |
18.25 ± 0.5 s |
SPL |
50 50 33.1 N |
16 17 36.9 E |
+401 m |
23:07:04.1 ± 0.2 s |
23:07:23.4 ± 0.2 s |
19.3 ± 0.3 s |
SCE |
49 28 ?? N |
17 58 ?? E |
? |
- |
- |
5 to 10 s. |
SPS: CCD imaging; JSA, SCE, STP : CCD drift scan; FRP : videorecording
These observations are in perfect agreement with J. MANEK's and S. PRESTON’s updates, as JSA and SPL were nearly on the central line of the shadow path (max duration : 22.7 s)
and STP was just outside it, at its southern border. The two exploitable chords can be fitted with a 110 ´ 150 km elliptic profile, consistent the mean diameter used for calculations,
about 150 km.
2004/02/08 : (119) Althaea / TYC 0810-02126-1 DLR (with C. FRISONI) MAA
DLR : videorecording
2004/02/11 : (241) Germania / HIP 50299 BOL CAS
BOL : was in the predicted path but reported clouds at the critical moment. CAS : CCD drift scan
2004/02/14 : (91322) 2001XR254 / TYC 1343-00785-1 BOL CNS HMG SPS
Event involving a Trans Neptunian Object. SPS : CCD drift-scan
2004/02/16 : (121) Hermione / TYC 1905-00864-1 BCL BFF BOL
BTH (with FVC) DPY DSS FAR GBL GMI HCP JII JNK JQT JVA JVB (with J. NORMAND and J. LECUBIN) LBA (with ATI) LPP MAA NNE OKE (with MSS) PAR PUI PUM RGD (with SZU) ROY SMI SPS UTF VAI (with J. VAISSIERE)
and four positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
CRB |
40 50 48.2 N |
14 12 07.6 E |
+110 m |
22:29:27.16 ± ? s |
22:29:29.60 ± ? s |
2.44 ± ? s |
CNS |
42 35 44.2 N |
00 43 54.0 W |
+650 m |
22:32:37.55 ± 0.3 s |
22:33:02.2 ± 0.1 s |
24.65 ± 0.1 s |
DEF |
43 29 49.7 N |
01 05 42.4 W |
+80 m |
22:32:57.1 ± 0.1 s |
22:33:05. 8 ± 0.1 s |
8.7 ± 0.15 s |
SBL |
42 34 34.8 N |
05 33 53.4 W |
+828 m |
22:33:58.0 ± ? s |
22:34:08.0 ± ? s |
10 ± 1 s |
FAR, HCP,
OKE, PAR, PUI: video recording; DPY, JII, LBA, NNE, PUM, RGD, ROY, SPS, VAI :
CCD drift scan;
GMI, JVA
:
CCD imaging
W.J. MERLINE et al. discovered the tiny (17 km in diameter) satellite "S/2002 (121) 1" of 121 HERMIONE at Keck Observatory in 2002 September (cf. IAUC 7980).
Satellite was predicted to follow a track : 148 ± 115 km North from J. MANEK's or S. PRESTON's centreline of main body.
Bad weather prevented observations all along the predicted satellite track.
BFF : blink at 22:31:07; DSS, NNE : due to clouds, survey not including predicted time of occultation by satellite.
GMI : two magnitude drops were recorded at 22:31:14 and 22:31:49; as the main event should have occurred at about 22:29:35 and the satellite event at about 22:30:40, these drops (too small for an occultation, anyway) must be due to turbulence.
Positive observations involve the main body and show that all the system was shifted about 0.3 path width (60 km) toward south. Chords can be fitted with an elliptical profile (145 ´ 175 km) and show that Hermione is smaller than supposed (mean diameter used for the predictions ranging from 180 to 230 km).
2004/02/18 : (284) Amalia / TYC 0782-00761-1 BUL WKL
and five positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
JHP |
54 16 30.13 N |
00 41 13.15 W |
+75 m |
23:14:39.6 ± 0.1 s |
23:14:43.3 ± 0.1 s |
3.7 ± 0.15 s |
BLM |
52 09 20.45 N |
04 29 06.58 E |
+20 m |
23:14:05.8 ± 0.5 s |
23:14:11.6 ± 0.5 s |
5.8 ± 0.7 s |
LEI |
50 32 53 N |
08 30 02 E |
+167 m |
23:13:34.3 ± 0.1 s |
23:13:39.2 ± 0.1 s |
4.9 ± 0.15 s |
OKE, MSS |
50 08 17.4 N |
08 21 50.4 E |
+256 m |
23:13:32.3 ± 0.1 s |
23:13:34.9 ± 0.1 s |
2.6 ± 0.15 s |
SPU |
50 32 04 N |
08 35 31 E |
+240 m |
23:13:33.52 ± 0.05 s |
23:13:38.78 ± 0.05 s |
5.25 ± 0.1 s |
OKE, MSS : videorecording.
WKL negative observation, positive ones and measured durations reveal a slight shift of the path (0.4 path width, toward north); the chords can be fitted with an elliptical
profile 38 ´ 70 km. JHP timing results must be corrected by about -7 s to fit other results.
2004/02/20 : (349) Dembowska / HIP 53965 DKC JNK MRX THO
and one positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
SKC |
50 35 17.3 N |
29 55 14.2 E |
+146 m |
21:31:44.3 ± ? s |
21: 31: 45.0 ± ? s |
0.7 ± ? s |
THO : videorecording
SKC was situated far from the predicted path so he perhaps observed a tiny 10 km – satellite, searched 12 days after by B. MERLINE et al. at VLT telescope without result.
2004/02/25 : (2019) van Albada / TYC 1338-00883-1u BOL DGE DGG ELL HCP HMG HSC JGS JNK MLS PAR SHI STH THO TPT
Event published on Euraster web-site www.euraster.net and updated by J. MANEK.
ELL, HCP, JGS, PAR, SHI, THO : videorecording; MLS : two telescopes with CCD imaging.
HCP, JGS, PAR were in the predicted path, HMG and THO very close to it; HCP and PAR have been disturbed by clouds. The lack of positive observation lets the real path position unknown, but it has been significantly shifted.
2004/03/04 : (408) Fama / TYC 0809-00875-1 SHI (with Hans JASICEK)
SHI : videorecording. T. HAYAMIZU from the JOIN (Japanese Occultation Information Network) sent a negative report.
2004/03/08 : (554) Peraga / TYC 0829-00848-1 BOL GCV JLX JNK
GCV : videorecording; as he was in the J. MANEK’s predicted path, there must have been a significant shift.
JNK : blink at 21:11:07.49 ± 0.3 s with estimated duration between 0.5-1.0 s. JNK was far (about 16 path widths north) from the predicted path and event occurred almost two minutes before predicted appulse. So he perhaps observed a possible 5-10 km satellite, its distance from asteroid, projected on Earth surface, being almost 2000 km.
2004/03/20 : (545) Messalina / TYC 4933-00970-1 bao KHL PAH SBL
and one positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
DLR |
44 54 10.2 N |
10 50 40.7 E |
+19 m |
21:56:56.28 ± 0.12 s |
21:57:02.68 ± 0.12 s |
6.4 ± 0.24 s |
bao : photometer; PAH, DLR,: videorecording.
DLR reported four negative observations from stations near Bologna (obs. : C. FRISONI (FRI), A.DALLE DONNE (DDN) , R. NORELLI (NRL), E. PIERANTONI (PRT), D. DALL'OCCO, P. GARCIA). This is surprising since all of them were in the predicted shadow path and prediction was nearly exact ; DLR’s event measured duration is close to the expected value for a station at this location, near the central line of the track (maximal duration : 7.7 s).
2004/03/23 : (566) Stereoskopia / TYC 4970-01009-1 ELL JNK
and eight positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
LPG |
49 08 16.5 N |
01 39 53.5 E |
+43 m |
02:46:46.25 ± 0.05 s |
02:46:57.83 ± 0.05 s |
11.58 ± 0.05 s |
CHR |
49 21 04 N |
02 07 22 E |
+105m |
02:46:44.78 ± 0.02 s |
02:46:56.50 ± 0.02 s |
11.72 ± 0.04 s |
MID |
49 21 04 N |
02 07 22 E |
+105m |
02 46 44.85 ± 0.06 s |
02:46:56.5 ± 0.06 s |
11.65 ± 0.05 s |
JLX |
49 38 23.5 N |
02 07 56.1 E |
+165 m |
02:46:46.75 ± 0.15 s |
02:46:57.60 ± 0.15 s |
10.85 ± 0.2 s |
NND |
49 49 34 N |
02 46 10 E |
+105 m |
02:46:45 ± 1 s |
02:46:52 ±1 s |
7 ± 1.5 s |
KBY |
50 37 20.3 N |
02 27 08.7 W |
+12 m |
02:47:13.9 ± 0.2 s |
02:47:23.45 ± 0.2 s |
9.55 ± 0.3 |
HMG |
51 15 57.12 N |
00 30 27.72 W |
+57m |
02:47:04 ± 1 s |
02:47:11.3 ± 0.1 |
7 ± 1 s |
amg |
54 21 11 N |
06 38 59 W |
+69m |
02:47:44.6 ± 0.5 s |
02:47:53.4 ± 0.5 s |
8.8 ± 0.7 s |
amg observers : A. CHRISTOU (ACH) and D. ASHER; CHR : CCD drift scan, was with J.M. VUGNON (JVG);
MID : videorecording, was with O. DECHAMBRE (ODC) and D. NGUYEN;
ELL: videorecording, should observed an event as he was in the shadow path, but missed the appulse time by a few seconds.
HMG : a probable error with the stopwatch caused a 2.4 s duration to be reported originally. Reconstruction of oral notes shows this to be unrealistic, and that the time was more
likely 7 ± 1 s.
JLX : transient dimming at 02:45:30-32.5 ± 1 s.
LPG : 0.9 s time shift must be introduced to get agreement with others observers.
Chords can be fitted with a 122 ´ 158 km elliptic profile, the long axis lying at an angle of 33° relative to the asteroid motion.
Predicted path by J. MANEK was nearly exact (less than 5 km shift).
2004.03.23 : (1024) Hale / HIP 72388 BDR BKN BTG BUL DGE DNZ ELL HRU IBL LEI MLS NBL OKE (with MSS)
PAW (with P. VINGERHOETS and P. De CAT) SLO THO WLL WSG
and three positive or perhaps positive:
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
amg |
54 21 11 N |
06 38 59 W |
+69m |
22:06:27.5 ± 0.1 s |
22:06:34.4 ± 0.1 s |
6.9 ± 0.15 s |
TPY |
51 23 41 N |
06 58 46 E |
+120 m |
23:05:48.3 ± 0.1 s |
23:05:53.4 ± 0.1 s |
5.1 ± 0.15 s |
SPU |
50 40 18 N |
08 44 09 E |
+250 m |
23:05:50 ± 1 s |
23:05:51 ± 1 s |
Less than 1 s |
Event predicted by S. PRESTON on his web-site http://www.asteroidoccultation.com, updated by himself and J. MANEK.
BDR, DNZ, OKE, THO, ELL, WSG : videorecording; MLS, PAW, TPY : CCD imaging; BKN : photographic method
amg : survey disturbed by clouds; observers : Apostolos CHRISTOU (ACH), Ignacio UGARTE and Amir AHMAD, gradual D and R given in the table; John Mac FARLAND, 2” south, 3”east from others observers and 61 meters above sea level : perhaps a positive observation, no timing done.
HRU : was in the shadow path but stopped his survey a few seconds too early; SLO : survey interrupted by clouds shortly before closest approach; SPU : many clouds.
SPU, TPY positive observations and BKN, LEI negative ones (“shepherd” observers) are in agreement with a 40 km body; as TPY registered a duration close to the max value (4.5 s), the
path must have been shifted 0.6 path width toward north.
amg observations must be spurious (as not confirmed by an important set of observers dispatched in the Netherlands and northern Germany).
Other observations (not in E.A.O.N. program) :
2004/01/01 : (1596) Itzigsohn /TYC 1255-00023-1u PAH
Event published by Mike KRETLOW (KRT) on his web-site http://astro1.physik.uni-siegen.de/uastro/occult/pred2004/stino/gif/
2004/01/09 : (290) Bruna / TYC 4067-00190 SCB trt
Event published by FRP on the web-site www.euraster.net
2004/01/09 : (983) Gunila / TYC 0766-01034-1 CNS SCB
Event predicted by Steve PRESTON (PST). CNS was in the predicted path but his survey has been interrupted by clouds before the closest approach. SCB : videorecording
2004/01/10 : (272) Antonia / TYC 0279-01058-1 trt
Euraster event
2004/01/17 : (2104) Toronto / TYC2 1192-01397-1 BOL (with Chiara RIEDO) OKE
Event published by KRT; OKE: videorecording
2004/01/23 : (16394) 1981 QD 4 / TYC 2447-00551-1 NVI SUP
Event published on Vitali NEVSKI (NVI) web-site www.nevski.nm.ru/Rus/info/occultinf_eng.html
2004/01/24 : (32505) 2001 KF 17 / TYC 5481-00826-1 NVI SUP
Event published on NVI web-site
2004/01/24 : (413) Edburga / HIP 35659 NVI
Event published on NVI and KRT web-sites and updated by PST
2004 01 25 : (443) Photographica / TYC 0664-00973-1 BTG JHP
Event published on NVI and KRT web-sites and updated by PST
2004/01/30 : (1359) Prieska / TYC 2475-00991-1 CNS MBU trt
Event predicted by PST
2004/01/30 : (1051) Merope / 2UCAC 29653183 BOL trt
Euraster event
2004/01/30 : (828) Lindemannia / 2UCAC 39840122
Only one positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
NVI |
55 03 34 N |
30 19 47 E |
+180 m |
20:17:39.3 ± 0.1 s |
20:17:40.25 ± 0.1 s |
0.95 ± 0.15 s |
Event published on NVI web-site and updated by PST
2004/01/30 : (4722) Agelaos / TYC 2436-00556-1 BOL HRB trt
Event predicted by KRT and FRP; HRB : videorecording
2004/01/30 : (11554) Asios / TYC 1348-01439-1 NVI
Event predicted by KRT and NVI
2004/01/30 : 2003AZ84 / 2UCAC 36806754 SPS
Euraster event involving a Trans Neptunian Object; SPS : CCD imaging
2004/02/08 : (1329) Eliane / TYC 0742-00096-1 trt
Event predicted by KRT and FRP
2004/02/10 : (1664) Felix / TYC 2474-00967-1 BOL
Event published on NVI web-site and updated by PST. Two negative reports have been received from the JOIN.
2004/02/13 : (2413) van de Hulst / TYC 0769-00529-1 BOL trt
Event predicted by KRT and FRP
2004/02/14 : (4521) Akimov / TYC 0625-00620-2 BOL SUP
Event published on NVI web-site
2004/02/15 : (6472) Rosema / TYC 0805-01280-1 SUP
Event published on NVI web-site
2004/02/23 : (5979) 1992XF / TYC 1335-01087-1u DGE JGS
Event published on NVI web-site; JGS : videorecording
DGE was in the predicted shadow path but uncertainty was great for this small asteroid (diameter about 13 km).
2004/02/25 : (4959) Niinoama / HIP 15633 BOL NVI
Event published on NVI web-site
2004/02/27 : (946) Poesia / 2UCAC 33399714 BOL
2004/02/29 : (1262) Sniadeckia / TYC 0037-00948-l MLS
Event published on NVI and SMI web-site http://www.uni-mainz.de/~michschm/Ast2004.
MLS : two telescopes, CCD imaging
2004/03/02 : (3118) Claytonsmith / 2UCAC 38965910 BOL trt
Event published on Euraster and SMI web-sites.
2004/03/03 : (98) Ianthe / 2UCAC 45793162 BOL CNS
2004/03/10 : (1458) Mineura / HIP 59872 BGS BOL
Event predicted by PST; BGS : videorecording
2004/03/12 : (340) Eduarda / HIP 69981 HRB PAR
Event predicted by PST; HRB, PAR : videorecording
2004/03/17 : (1765) Wrubel / 2UCAC 44834247
Only one positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
BOL |
45 36 18 N |
08 51 07 E |
+230 m |
03:28:42.0 ± 0.5 s |
03:28:43.5 ± 0.5 s |
1.5 ± 0.5 s |
BOL : uncertain observation due to bad seeing and star faintness. Event occurred at the predicted time but BOL was at about 1.5 path width from the shadow path limit, so no conclusion can be drawn.
2004/03/19 : (250) Bettina / 2UCAC 41661504
Only one positive :
Abbr |
Latitude |
Longitude |
Height |
Disappearance UT |
Reappearance UT |
Duration |
JHP |
54 16 30.13 N |
00 41 13.15 W |
+75 m |
21:17:34.05 ± 0.15 s |
21:17:35.8 ± 0.15 s |
1.75 ± 0.2 s |
Event published on SMI web-site; JHP : clear disappearance of target star, the others in the field remaining visible. Many interruptions due to clouds. JHP was in the predicted track, but event occurred about 54 s after the predicted time.
2004/03/21 : (201) Penelope / TYC 1366-00907-1 JNK OTA
Event predicted by KRT ; OTA : videorecording. This event has not been found with actuated orbital elements (03/2004 ASTORB data)
2004/03/29 : (894) Erda / TYC 0752-01112-1 BOL JNK OKE (with MSS)
Event predicted by KRT and SMI; OKE : videorecording; JNK : survey interrupted shortly after the predicted appulse time.
2004/03/31 : (2165) Young / HIP 65642 OTA
Videorecording.
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Received reports and results are
summarized on www.euraster.net, a web site maintained by E. FRAPPA from
Saint-Etienne Observatory.
Please send the reports quickly, about positive as well as negative observations !
It is necessary to send a report even if there has been no occultation for 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 and size of main body if we do have positive (“shepherd observations”), they limit the location of main body (when we don't have a positive), and sweeps the nearby space around main body for possible satellites!
There is no need to send a report if the weather or technical conditions have prevented the event observation.
Please DON’T FORGET to use the IAU format for the date, YYMMDD.
G. REGHEERE gillesregheere@yahoo.fr
13 bis rue de l’église
78890 GARANCIERES - France