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2016-04-14 / HIP 54675 / (168) Sibylla

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Dominique Albanese O+ CCD M280 FR NTP 21:40:53 21:40:53.48 21:41:01.67 21:41:01 8.19 75.3
2 show JM Mari/L. Brunetto O+ CCD M406 FR GPS++ 21:35:35 21:40:48.43 21:41:03.57 21:44:22 0.01 0.01 15.14 139.3
3 show Florian Signoret O+ VID M130 FR GPS++ 21:29:44 21:40:48.42 21:41:03.57 21:43:22 0.02 0.02 15.15 139.4
4 show Matthieu Conjat O+ CCD L130 FR NTP 21:39:43 21:40:47.65 21:41:04.11 21:43:54 1 1 16.46 151.4
5 show E. Frappa/A. Klotz O+ CCD M250 FR GPS++ 21:40:16 21:40:50.14 21:41:05.70 21:43:32 0.08 0.08 15.56 143.2
6 show Hilari Pallares O- VIS M280 ES 21:40:15 21:45:17
7 show Michel Deconinck O- VIS B126 FR 21:38:07 21:45:00
8 show Luc Maurin O- CCD L58 FR 21:27:44 21:42:26
9 show Pietro Baruffetti O- VID M200 IT 21:38:08 21:41:08
10 show Carlo Gualdoni O- VID M250 IT 21:39:00 21:42:00
11 show Stefano Sposetti O- VID M400 CH 21:32:10 21:46:35
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

11 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#71 : 7dd6bbd1-fd03-42b9-8111-a8ae5035d04d [db: observed]

Using prediction 7dd6bbd1-fd03-42b9-8111-a8ae5035d04d for map and profile fit

Get observations as KML file (reduced site location resolution)

Ellipse and circular profile fits to the timings (chords)

 Auto-Fit Result:
Size = 163 x 100 km
a',b' = 81.3, 50.0 km
X0,Y0 = -2197.9, -4.7 km
Mean diameter = 128 km

From 5 chords (VID,CCD)








You can enter space separated chord numbers (example: 11 4 8) or a method like VIS to ignore all visual timings, or a time source like RAD and NTP (but not GPS).
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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 7dd6bbd1-fd03-42b9-8111-a8ae5035d04d [observed]

 Occultation Date + Time   : 2016-04-14 at 21:37:30 UT +/- 0.0 min  [1]
 Object Designation        : (168) Sibylla
 Orbit Class               : MBA
 Star Designation          : GDR3 3811331580216863872
 Star Coordinates (ICRF)   : RA = 11 11 31.4400, DE = +02 03 40.789  [2]
 Star Magnitudes           : G = 9.13 mag, RP = 8.65 mag, BP = 9.44 mag
 Object Magnitude          : V = 13.92 mag
 Estimated Magnitude Drop  : 4.8 mag
 Estimated Max. Duration   : 16.2 sec
 Object Mean Diameter      : 148 km  (src: astorb)
 Speed of the shadow       : 9.2 km/s
 Elongation to Moon & Sun  : 44° (sunlit = 58%), Sun = 143°
 Cross-track uncertainty   : 1.0 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.07 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#71

 Object is a Gaia mass determination target !

 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

More Data and Informations
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