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2019-04-01 / 4UC 468-046040 / (50) Virginia

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Stefan Gajdos O+ CCD M600 SK NTP 22:35:51 22:36:13.92 22:36:19.70 22:36:51 0.12 0.12 5.78 82.7
2 show Karel Halir O+ VID M507 CZ GPS++ 22:34:09 22:36:38.29 22:36:39.85 22:39:09 0.08 0.04 1.56 22.3
3 show Jan Manek O+ CCD M205 CZ GPS++ 22:34:35 22:36:29.96 22:36:36.46 22:38:35 0.05 0.05 6.50 93.0
4 show Vaclav Priban O+ VID M300 CZ RAD 22:34:14 22:36:32.51 22:36:38.27 22:38:15 0.32 0.32 5.76 82.4
5 show Michal Rottenborn O+ VID M303 CZ GPS++ 22:34:40 22:36:31.96 22:36:36.84 22:38:40 0.16 0.08 4.88 69.8
6 show Jiri Kubanek O+ VID M203 CZ GPS++ 22:34:47 22:36:32.84 22:36:35.08 22:29:32 0.16 0.16 2.24 32.0
7 show Tomas Janik O+ VID M350 CZ GPS++ 22:34:58 22:36:36.86 22:36:42.26 22:38:10 0.24 0.12 5.40 77.2
8 show Peter Delincak O- CCD M400 SK 22:35:00 22:37:00
9 show Petr Zeleny O- CCD M254 CZ 22:34:17 22:39:07
10 show M. Masek/M. Tylsar O- CCD M200 CZ 22:35:57 22:36:57
11 show Jiri Polak O- VID M303 CZ 22:34:40 22:38:41
12 show Jiri Kubanek O- VID M150 CZ 22:34:47 22:38:49
13 show Martin Masek O- CCD M150 CZ 22:36:07 22:37:07
14 show Peter Lindner O- VID M305 DE 22:35:09 22:40:31
15 show Christian Weber O- VID M203 DE 22:32:54 22:38:46
16 show Eberhard Bredner O- VID M254 DE 22:20:00 22:40:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

16 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#137 : 382bfd0b-0533-4ea3-aec1-2e9455397923 [db: observed]

Using prediction 382bfd0b-0533-4ea3-aec1-2e9455397923 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 = 96 x 79 km
a',b' = 48.0, 39.4 km
X0,Y0 = -1961.1, 17.0 km
Mean diameter = 87 km

From 7 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).
If the plot disappears, then there are less than 2 chords left (too much ignored, go back with browser).

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Map with groundtrack and observer stations

Event Details 
 Occultation UUID [and DB] : 382bfd0b-0533-4ea3-aec1-2e9455397923 [observed]

 Occultation Date + Time   : 2019-04-01 at 22:35:03 UT +/- 0.01 min  [1]
 Object Designation        : (50) Virginia
 Orbit Class               : MBA
 Star Designation          : GDR3 3812480054471670912
 Star Coordinates (ICRF)   : RA = 11 30 29.6807, DE = +03 29 41.387  [2]
 Star Magnitudes           : G = 12.54 mag, RP = 12.09 mag, BP = 12.84 mag
 Object Magnitude          : V = 14.48 mag
 Estimated Magnitude Drop  : 2.1 mag
 Estimated Max. Duration   : 7.0 sec
 Object Mean Diameter      : 100 km  (src: astorb)
 Speed of the shadow       : 14.3 km/s
 Elongation to Moon & Sun  : 162° (sunlit = 11%), Sun = 160°
 Cross-track uncertainty   : 1.3 mas = 2 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 0.97 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#137

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

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