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2018-11-13 / 4UC 593-004965 / (476) Hedwig

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Stefan Meister O+ CCD L140 CH GPS 19:44:12 19:45:00.16 19:45:10.47 19:45:58 0.13 0.25 10.31 122.7
2 show C. Perello/A. Selva O+1 VID M500 ES GPS++ 19:43:53 19:46:07.95 19:46:18.35 19:47:52 0.02 0.02 10.40 123.8
3 show Joan Rovira O+1 VID M200 ES GPS++ 19:42:30 19:46:06.30 19:46:15.28 19:49:55 0.04 0.02 8.98 106.9
4 show Christian Weber O+1 VID M203 DE GPS++ 19:41:01 19:44:05.83 19:44:15.11 19:46:19 0.16 0.16 9.28 110.4
5 show C. Perello/A. Selva O+2 VID M500 ES GPS++ 19:43:53 19:46:07.75 19:46:18.45 19:47:52 0.02 0.04 10.70 127.3
6 show Joan Rovira O+2 VID M200 ES GPS++ 19:42:30 19:46:05.58 19:46:15.98 19:49:55 0.04 0.04 10.40 123.8
7 show Christian Weber O+2 VID M203 DE GPS++ 19:41:01 19:44:05.19 19:44:15.75 19:46:19 0.16 0.16 10.56 125.7
8 show Alberto Ossola O- VID M230 CH 19:44:00 19:47:00
9 show Stefano Sposetti O- VID M280 CH 19:42:24 19:47:41
10 show Jiri Polak O- VID M303 CZ 19:42:37 19:46:35
11 show Michal Rottenborn O- VID M303 CZ 19:42:30 19:46:30
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#128 : 84a402df-d871-4751-8ba5-7ab55c880574 [db: observed]

Using prediction 84a402df-d871-4751-8ba5-7ab55c880574 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 = 148 x 53 km
a',b' = 74.1, 26.7 km
X0,Y0 = 1906.9, 30.1 km
Mean diameter = 89 km

From 7 chords (VID,CCD)








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Event Details
 Occultation UUID [and DB] : 84a402df-d871-4751-8ba5-7ab55c880574 [observed]

 Occultation Date + Time   : 2018-11-13 at 19:44:20 UT +/- 0.01 min  [1]
 Object Designation        : (476) Hedwig
 Orbit Class               : MBA
 Star Designation          : GDR3 0299824764922083328
 Star Coordinates (ICRF)   : RA = 02 01 29.7989, DE = +28 31 56.036  [2]
 Star Magnitudes           : G = 12.63 mag, RP = 12.01 mag, BP = 13.09 mag
 Object Magnitude          : V = 12.67 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 9.8 sec
 Object Mean Diameter      : 117 km  (src: astorb)
 Speed of the shadow       : 11.9 km/s
 Elongation to Moon & Sun  : 96° (sunlit = 33%), Sun = 160°
 Cross-track uncertainty   : 1.7 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 1.13 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#128

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

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