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] : f77ce07e-2662-44e4-a7bf-94b0e19e5b20 [observed]
Occultation Date + Time : 2022-01-18 at 00:58:40 UT +/- 0.06 min [1]
Object Designation : (142) Polana
Orbit Class : MBA
Star Designation : GDR3 3795781599581903232
Star Coordinates (ICRF) : RA = 11 38 16.5887, DE = -00 00 18.941 [2]
Star Magnitudes : G = 13.37 mag, RP = 12.8 mag, BP = 13.78 mag
Object Magnitude : V = 14.39 mag
Estimated Magnitude Drop : 1.4 mag
Estimated Max. Duration : 14.7 sec
Object Mean Diameter : 55 km (src: astorb)
Speed of the shadow : 3.8 km/s
Elongation to Moon & Sun : 57° (sunlit = 100%), Sun = 123°
Cross-track uncertainty : 4.3 mas = 4 km = 0.09 path-width (1-sig)
RUWE and duplicate source : 0.94 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#68
Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0