227 observations have been performed during 2007, July to September ( 42 positive or possibly positive) about 80 events
( 19 positive or possibly positive) by 105 observers, from the 17 following countries (and numbers of observers) :

AT = Austria ( 1 ), BE = Belgium ( 6 ), BY = Belarus ( 1 ), CH = Switzerland ( 2 ), CZ = Czech Republic ( 5 ),
DE = Germany ( 19 ), ES = Spain ( 8 ), FR = France ( 25 ), GR = Greece ( 2 ), IT = Italy ( 5 ),
NL = The Netherlands ( 5 ), PL = Poland ( 2 ), PT = Portugal ( 1 ), RO = Romania ( 1 ), TK = Turkey ( 2 ),
UA = Ukraine ( 12 ), UK = United Kingdom ( 5 ).

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) !

Denis DENISENKO (DKO) and Irek KHAMITOV, Russian observers, observed the Elektra event from the TUBITAK National Observatory at Antalya, Turkey and has been counted as a Turkish observers.

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.

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

Incertitude was large for this very small asteroid (13 km)

FOC : video observation, mainly hampered by clouds; GCV : CCD drift-scan

SKA was in the predicted path, his negative observation shows the path has been shifted. Since UTF was probably close to the real centreline, as he observed an event with duration close to the predicted value (4.6 s), this shift can be estimated to about one path width, toward south.

DGG : videorecording

FOC, RVA : videorecording

Incertitude was very large for this small asteroid (26 km)

DGG : videorecording

DGG was situated just on the "one s limit", s being the standard deviation on the measurements of asteroid position. The path has been shifted by about one of its width, toward South-West.

DGG : videorecording

DGG : videorecording

As in the case of the previous (2433) Sootiyo event, incertitude was very large for this small asteroid (about 15 to 18 km).

DGG, DLR, FRP, JLX : videorecording; DBE : CCD drift-scan, with Alain LOPEZ;
KKS : CCD imaging, with Irina STOGNEEVA; CJM double observation, visual and CCD drift scan

JLX : Reappearance in two steps, R1 : Partial (~ 40 % of the pre-occultation flux level) and R2 : complete reappearance.

JSZ : a possible event but not confirmed by MBU in double station.

VVP : CCD drift-scan; first attempt… and first positive observation

Chords are scattered but can be fitted by a 121 × 90 km elliptic profile, slightly (25°) inclined along the motion direction. Several chords have been obtained in three events during 2001, all about 80 km long. Note that the mean diameter deduced from previous measurements is 120 km. FRP observed the longest chord and was effectively only 170m north of the
S. PRESTON’ predicted centreline, which so was nearly exact.

ACH : CCD imaging, with Victoria HUDSON and David ASHER; ELL : videorecording

The max predicted duration was 17.7 s. Chords are in agreement with the expected ones, regarding the observers’ position in the shadow path, what means the prediction to be exact.

SBG : CCD imaging, was just at the border of the shadow path.

FRP : videorecording; SBG : CCD imaging; SPS: CCD drift-scan

JNK : many interruptions due to clouds; JSZ, MBU : double station, -24km from central line according to the last
S. PRESTON’ update.

BOL was situated in the predicted shadow path. Incertitude was large for this small asteroid (23 km). Real path has been shifted but the lack of positive lets its position remaining unknown.

DGG, RTH : videorecording

Incertitude was large for this small asteroid (16 km).

DGG, HDG, OKE, RTH : videorecording .

HDG was at immediate vicinity of the predicted path; end of survey disturbed by a cloud.

JNK was far from the predicted path, but within the "one s zone", large for this small asteroid (17 km). Max predicted duration was 1.9 s

ALY, FRP : videorecording; AEF, AUD, CDC, EBA : CCD drift-scan

HZJ and VLM in double station; JLX : two observations (visual and videorecording)

Several observers were in the predicted path, BTG, FRP and BDR at less than 7 km from predicted centreline, but also JLX and BNN. These negative observations reveal a path shift of 80 km ( 1.25 s ) toward SE.

AEF observation corresponds probably to a "grazing occultation". The intermediate brightness can be interpreted as a 2 km large "valley" on the profile of the asteroid.

DGG: videorecording; was at immediate vicinity of the predicted path, but incertitude was large for this small asteroid (17 km)

DEN: videorecording

FAP, FRP : videorecording; AUD, CDC, CJM, LJM, RNC, ROY : CCD drift-scan;
CDC : with S. DECONIHOUT; LJM with A.M. JACQUEY; RNC : with F. KUGEL

Several observers were in the predicted path. The negative observations and the AUD positive one (corresponding to the south border of the asteroid) reveal a wide path shift ( 3.2 s ) toward NE.

DGG, RTH : videorecording

DGG was at immediate vicinity of the predicted path, but incertitude was large for this small asteroid (17 km)

( 12008 ) Kandrup is a binary mars-crosser.

DGG, DNZ : videorecording

RTH : videorecording

ELL : videorecording, was just north of predicted N limit.

AEF : CCD drift scan; trt : remote observation by E. FRAPPA and A. KLOTZ

Observations by GFJ and LEI are real but poorly timed due to bad conditions and weak target star.
TAROT observatory was close to the predicted centreline : as the observed duration is close to the max predicted one (8.2 s), the prediction was nearly exact.

Chords are scattered. The longest (58 km) is the trt one, to be compared with the 68 km mean diameter used for calculations.

AEF, AUD : CCD drift-scan; DGG : videorecording

JSZ and MBU in double station

DEN, FRP and RTH were effectively in the predicted path. Chords are in agreement with the expected ones, regarding the position of the observers in the path. They can be fitted with a 97 × 67 km profile, to be compared with the 95 km mean diameter used for calculations.

JNK: D and R seemed gradual, drop about 2 mag.

AEF, AUD : CCD drift-scan;
AKF, DGG, ENK, FST, OKE, RHE, RTH, WSG : videorecording

The two chords must be shifted by about 1.9 s to fall in agreement. They nevertheless agree to give a minimum size of 25 km to the asteroid, more than the 20 km value used for calculations.

The incertitude was large for this small asteroid. AEF was in the predicted path, JNK and MVZ, at more than 10 path widths, close to the one s limit.

AUD, SPS : CCD drift-scan; SBG : videorecording.

Incertitude was large for this small asteroid (24 km)

DGG : videorecording

NVI was at immediate vicinity of the predicted path.

KVF with I.V. LUKYANYK : CCD imaging

KVF with I.V. LUKYANYK : CCD imaging

DGG : videorecording

KVF with I.V. LUKYANYK : CCD imaging; DKO : with Irek KHAMITOV, CCD drift scan.

First positive for DKO, after 5 years.

1.5-meter Russian Turkish telescope was effectively in the predicted path.

AUD : CCD drift-scan; ELL, FST, RTH : videorecording

MLS : two telescopes, videorecording

ELL was at immediate vicinity of the predicted path; incertitude was very large for this asteroid (s about 20 times the path width)

AEF, AUD : CCD drift scan

BDR : videorecording, due to some clouds, the observation started some seconds after the predicted appulse time

FST : videorecording; HRU : many interruptions due to clouds

PAW : CCD imaging, many interruptions due to clouds; WSG : videorecording, due to clouds , reliable observation only after the predicted appulse time

FST (resp. BTG) was located in (resp. a little outside) the predicted path. AEF was situated 26 km from predicted centreline. All data lead to a shift of the shadow path toward SE, at least two times the path width. Incertitude was large for this very small asteroid (10 km).

Short dimmings due to seeing.

CQU, ROY : CCD drift-scan

CQU and ROY were located in the predicted path. Incertitude was very large for this small asteroid (15 km).

SBG : CCD imaging

Incertitude was very large for this small asteroid (12 km).

AUD : CCD drift-scan, was just at the border of the predicted path.

As the V= 12.0 target is an 2UCAC "crypto-binary", with companion one mag. fainter than the main star, at about 2" to 2.5" NNW. The main path should have been shifted relative to the predicted one.

KVF with I.V. LUKYANYK : CCD imaging; TSV : videorecording

TIK : first attempt… and first positive !

TSV reported another positive observation from Stefanos SOFOLOGIS, from SKIATHOS Island.

As max predicted duration was 10.7 s, the observers registered a nearly central event : the real path must have been shifted by a quarter of its width, toward south.

AUD : CCD drift-scan

Asteroid measurement : at least 87 km ; Remote observation by E. FRAPPA and A. KLOTZ

The TAROT observatory was situated close to the northern border of the predicted shadow path. As the event was nearly a central one (the max predicted duration was 3.7 s), the real path has been shifted toward NW by about half of its width.

NVV: Positive observation by four independent observers (Vladimir NEBOTOV Denis SVECHKAREV, Youry KRUGLY, Igor TERESHCHENKO) equipped with 110-mm, 2x150-mm and 200-mm telescopes (visual) and a CCD drift image obtained on a 70-cm telescope.

Positive observations are coherent with a shift of the shadow path (half of its width) toward SE, relative to the prediction.

MLS : videorecording, no occ. > 1.0 s

ELL : videorecording, was on the edge of 1SD zone. Observation interrupted two times by clouds around the appulse
predicted time

DGG, GKB, MNK, PAR, SMD : videorecording

HCP : with Gabriele ECKL-TITZ, visual observation, only D has been measured, R time deduced from the duration measured on a videorecording.

The observations show the path has been slightly shifted (by about half of its width) toward SE. This shift put LAB and SMD just out of the track.

Chords can be fitted with a 82 × 63 km elliptic profile, but a complete half is lacking. Note that the diameter used for calculations was significantly smaller (55 km).

KVF with I.V. LUKYANYK : CCD imaging

NVV : with Denis SVECHKAREV; ZLA : with Alexander BAHMUTOV

NVV reported one more visual negative observation by Oleg KRYKLYA from KRASNOGRAD , (N 49 22 03.36,
E 35 27 46.32) equipped with a 160-mm telescope.

NVV and ZLA were in the predicted path. The real one has been shifted, but the lack of positive observation lets its position remaining unknown.

Low probability event, as standard deviation was four times the path width.

RVA : several interruptions due to mist

DGG : videorecording. Incertitude was very large for this small asteroid (16 km).

AKF, DEN, MKM, RTH : videorecording

The four observers were effectively in the predicted path, and DEN and RTH, on the centreline.

Chords can be fitted with a very elongated 103.5 × 57.5 km profile, with long axis parallel to the asteroid motion.
DEN and RTH both observed effectively a central event, so the prediction was exact.

KVF : with I.V. LUKYANYK CCD imaging

KVF : with I.V. LUKYANYK CCD imaging

AUD : CCD drift- scan; DGG, SCB : videorecording

AUD was effectively in the predicted path. Note that the max duration was 4.3 s.

Both observers were in the predicted path but incertitude was large for this small asteroid (22 km).

AUD : CCD drift- scan

ELL : videorecording

RSG : CCD drift- scan

The 15 following events have been observed by TAROT only – all negative results :

2007/07/09 8861 Jenskandler TYC 5178-00901-1 2007/07/10 1742 Schaifers TYC 6304-01512-1

2007/07/27 43807 1991 RC11 TYC 1666-00111-1 2007/07/29 2666 Gramme 2UCAC 31950703

2007/08/12 13378 1998 VF35 2UCAC 28999511 2007/08/14 15161 2000 FQ48 TYC 1078-00973-1

2007/08/15 5759 Zoshchenko TYC 4665-00406-1 2007/08/16 7414 Bosch TYC 0626-00838-1

2007/08/27 589 Croatia 2UCAC 28217225 2007/09/07 3080 Moisseiev TYC 1278-00073-1

2007/09/15 15054 1998 YS5 TYC 6962-01052-1 2007/09/22 1273 Helma 2UCAC 39841441

2007/09/24 5320 Lisbeth TYC 0021-00938-1 2007/09/25 27669 1979 MQ4 TYC 1765-00367-1

2007/09/30 3630 Lubomir TYC 5232-00382-1

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