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2022-10-12 / 4UC 492-009839 / (5284) Orsilocus

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Henk De Groot O+ VID M356 NL GPS++ 04:00:39 04:04:20.12 04:04:33.80 04:06:37 0.04 0.04 13.68 50.6
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: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#54 : 60a75daa-4838-4a38-904d-aae214bfb5b3 [db: observed]

Using prediction 60a75daa-4838-4a38-904d-aae214bfb5b3 for map and profile fit

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Event Details
 Occultation UUID [and DB] : 60a75daa-4838-4a38-904d-aae214bfb5b3 [observed]

 Occultation Date + Time   : 2022-10-12 at 04:17:58 UT +/- 0.25 min  [1]
 Object Designation        : (5284) Orsilocus
 Orbit Class               : JTRO
 Star Designation          : GDR3 3290111765266272256
 Star Coordinates (ICRF)   : RA = 05 04 42.4580, DE = +08 23 54.122  [2]
 Star Magnitudes           : G = 11.75 mag, RP = 11.15 mag, BP = 12.18 mag
 Object Magnitude          : V = 17.34 mag
 Estimated Magnitude Drop  : 5.6 mag
 Estimated Max. Duration   : 8.7 sec
 Object Mean Diameter      : 32 km  (src: astorb)
 Speed of the shadow       : 3.7 km/s
 Elongation to Moon & Sun  : 32° (sunlit = 94%), Sun = 122°
 Cross-track uncertainty   : 6.7 mas = 20 km = 0.64 path-width (1-sig)
 RUWE and duplicate source : 1.09 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#54

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

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