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2023-10-14 / UCAC4 550-024925 / (17490) 1991 UC3

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Michal Rottenborn O- VID M254 CZ GPS 22:43:08 22:47:08
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

1 observation found in db: sodis

Available (probably) matching predictions (click on the link to switch):
JPL#38 : f5b8d6a1-d75a-4400-8cc2-38ebea2c082c [db: observed]

Using prediction f5b8d6a1-d75a-4400-8cc2-38ebea2c082c for map and profile fit

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Event Details
 Occultation UUID [and DB] : f5b8d6a1-d75a-4400-8cc2-38ebea2c082c [observed]

 Occultation Date + Time   : 2023-10-14 at 22:54:55 UT +/- 0.06 min  [1]
 Object Designation        : (17490) 1991 UC3
 Orbit Class               : MBA
 Star Designation          : GDR3 3374210867053747328
 Star Coordinates (ICRF)   : RA = 06 17 25.2414, DE = +19 57 55.804  [2]
 Star Magnitudes           : G = 12.15 mag, RP = 11.5 mag, BP = 12.58 mag
 Object Magnitude          : V = 18.99 mag
 Estimated Magnitude Drop  : 6.9 mag
 Estimated Max. Duration   : 0.5 sec
 Object Mean Diameter      : 4 km  (src: astorb)
 Speed of the shadow       : 8.4 km/s
 Elongation to Moon & Sun  : 110° (sunlit = 0%), Sun = 107°
 Cross-track uncertainty   : 4.0 mas = 5 km = 1.34 path-width (1-sig)
 RUWE and duplicate source : 1.58 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#38

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

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