UT1/UT4: Begin/End of observation | UT2/UT3: Begin/End of occultation | Dur: Reported duration in seconds | Chrd: Corresponding chord length in km |
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1 observation found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : efb21d17-fc59-4249-9dee-f0f966ebd48b [observed]
Occultation Date + Time : 2020-10-07 at 03:49:43 UT +/- 0.01 min [1]
Object Designation : (5550) 1981 UB1
Orbit Class : MBA
Star Designation : GDR3 0658544483637438848
Star Coordinates (ICRF) : RA = 08 43 22.7300, DE = +17 31 01.965 [2]
Star Magnitudes : G = 11.87 mag, RP = 11.1 mag, BP = 12.52 mag
Object Magnitude : V = 17.77 mag
Estimated Magnitude Drop : 5.9 mag
Estimated Max. Duration : 0.4 sec
Object Mean Diameter : 11 km (src: astorb)
Speed of the shadow : 29.7 km/s
Elongation to Moon & Sun : 57° (sunlit = 77%), Sun = 66°
Cross-track uncertainty : 2.0 mas = 4 km = 0.37 path-width (1-sig)
RUWE and duplicate source : 1.71 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#58
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0