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2025-04-16 / UCAC4 568-040660 / (90) Antiope

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Sergey Nazarov O+ VID M280 RU ? 19:33:19 19:34:17.300 19:34:24.500 19:37:21 0.4 0.3 7.20 114.5
2 show Daniel Blazewicz O+ VID M350 PL GPS 19:30:02 19:33:14.14 19:33:18.04 19:36:39 0.38 0.38 3.90 62.0
3 show Anna Marciniak O+ CCD M400 PL GPS 19:31:05 19:32:57.000 19:33:01.800 19:35:49 0.5 0.4 4.80 76.3
4 show Anna Marciniak O+ CCD M350 PL GPS 19:31:29 19:32:52.800 19:32:56.900 19:36:35 0.5 0.5 4.10 65.2
5 show Nikolai Wuensche O+ VID M300 DE GPS 19:29:45 19:32:40.2 19:32:45.6 19:35:45 0.8 0.4 5.40 85.9
6 show Jiri Kubanek O- VID M303 CZ GPS 19:31:29 19:34:29
7 show Tomas Janik O- CCD T600 CZ GPS 19:31:57 19:33:44
8 show Daniel Antuszewicz O- VID M200 PL NTP 19:31:48 19:34:44
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

8 observations found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#132 : 5fa0a530-8531-11ef-78cd-837efd3a200e [db: asteroids]

Using prediction 5fa0a530-8531-11ef-78cd-837efd3a200e 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 = 156 x 66 km
a',b' = 77.8, 32.9 km
X0,Y0 = -782.4, -5.1 km
Mean diameter = 101 km

From 5 chords (CCD,VID)








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] : 5fa0a530-8531-11ef-78cd-837efd3a200e [asteroids]

 Occultation Date + Time   : 2025-04-16 at 19:31:00 UT +/- 0.01 min  [1]
 Object Designation        : (90) Antiope
 Orbit Class               : MBA
 Star Designation          : GDR3 0868087936487173120
 Star Coordinates (ICRF)   : RA = 07 34 44.6635, DE = +23 33 50.379  [2]
 Star Magnitudes           : G = 14.94 mag, RP = 14.45 mag, BP = 15.26 mag
 Object Magnitude          : V = 14.93 mag
 Estimated Magnitude Drop  : 0.8 mag
 Estimated Max. Duration   : 7.6 sec
 Object Mean Diameter      : 120.1 km  (src: astorb)
 Speed of the shadow       : 15.9 km/s
 Elongation to Moon & Sun  : 137° (sunlit = 88%), Sun = 85°
 Cross-track uncertainty   : 0.4 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.06 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#132

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

More Data and Informations
SiMDA | 3D Asteroid Catalogue | Johnston Archive | Star at CDS (Vizier) | JPL Small-Body Node | Minor Planet Center | Wikipedia
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