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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3 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : bc3174a3-aecb-4844-ac69-a7915c0a9f1b [observed]
Occultation Date + Time : 2021-12-26 at 22:06:02 UT +/- 0.02 min [1]
Object Designation : (2400) Derevskaya
Orbit Class : MBA
Star Designation : GDR3 3154469070198999424
Star Coordinates (ICRF) : RA = 07 10 53.4275, DE = +08 42 30.989 [2]
Star Magnitudes : G = 12.1 mag, RP = 11.42 mag, BP = 12.64 mag
Object Magnitude : V = 17.05 mag
Estimated Magnitude Drop : 5.0 mag
Estimated Max. Duration : 0.9 sec
Object Mean Diameter : 13 km (src: astorb)
Speed of the shadow : 13.9 km/s
Elongation to Moon & Sun : 77° (sunlit = 52%), Sun = 161°
Cross-track uncertainty : 0.7 mas = 1 km = 0.09 path-width (1-sig)
RUWE and duplicate source : 0.93 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#57
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0