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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2 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : d9007f7b-7d96-41de-a168-42e14a819eb6 [observed]
Occultation Date + Time : 2020-12-31 at 02:28:41 UT +/- 0.11 min [1]
Object Designation : (465) Alekto
Orbit Class : MBA
Star Designation : GDR3 3859370033508047360
Star Coordinates (ICRF) : RA = 10 39 40.7569, DE = +06 07 09.780 [2]
Star Magnitudes : G = 14.43 mag, RP = 13.79 mag, BP = 14.91 mag
Object Magnitude : V = 14.87 mag
Estimated Magnitude Drop : 1.0 mag
Estimated Max. Duration : 21.6 sec
Object Mean Diameter : 73 km (src: astorb)
Speed of the shadow : 3.4 km/s
Elongation to Moon & Sun : 48° (sunlit = 99%), Sun = 121°
Cross-track uncertainty : 3.3 mas = 5 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#72
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0