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2022-04-16 / 4UC 308-165463 / (6557) Yokonomura

#OBSObserverOccMeth.Instr.CC TSRCUT1UT2UT3UT4UT2EUT3EDur.Chrd
1 show Simon Kidd O+ CCD M350 UK GPS++ 04:07:40 04:08:39.99 04:08:44.46 04:09:15 0.36 0.09 4.47 18.3
2 show Pierre Le Cam O- CCD M250 FR 04:07:00 04:11:00
UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km | More

2 observations found in db: euraster

Available (probably) matching predictions (click on the link to switch):
JPL#46 : ceeaee1b-0469-474e-a167-ad005ac45721 [db: observed]
JPL#46 : 38c02b8f-e1f3-4807-ac9b-8aaf90d0eaaa [db: observed]

Using prediction ceeaee1b-0469-474e-a167-ad005ac45721 for map and profile fit

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Event Details
 Occultation UUID [and DB] : ceeaee1b-0469-474e-a167-ad005ac45721 [observed]

 Occultation Date + Time   : 2022-04-16 at 03:54:39 UT +/- 0.14 min  [1]
 Object Designation        : (6557) Yokonomura
 Orbit Class               : MBA
 Star Designation          : GDR3 4062448937821688448
 Star Coordinates (ICRF)   : RA = 18 03 28.5351, DE = -28 30 17.443  [2]
 Star Magnitudes           : G = 16.09 mag, RP = 14.63 mag, BP = 16.57 mag
 Object Magnitude          : V = 18.73 mag
 Estimated Magnitude Drop  : 2.7 mag
 Estimated Max. Duration   : 2.6 sec
 Object Mean Diameter      : 10 km  (src: astorb)
 Speed of the shadow       : 4.1 km/s
 Elongation to Moon & Sun  : 73° (sunlit = 99%), Sun = 115°
 Cross-track uncertainty   : 1.1 mas = 2 km = 0.24 path-width (1-sig)
 RUWE and duplicate source : 1.16 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#46

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

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