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):
Occultation UUID [and DB] : df9425e2-351f-47c3-a35a-f7314415fb20 [observed]
Occultation Date + Time : 2020-10-31 at 21:24:16 UT +/- 0.03 min [1]
Object Designation : (11945) Amsterdam
Orbit Class : MBA
Star Designation : GDR3 2507785916136302080
Star Coordinates (ICRF) : RA = 01 54 56.9325, DE = +00 13 36.379 [2]
Star Magnitudes : G = 11.64 mag, RP = 11.21 mag, BP = 11.91 mag
Object Magnitude : V = 17.45 mag
Estimated Magnitude Drop : 5.8 mag
Estimated Max. Duration : 0.7 sec
Object Mean Diameter : 7 km (src: astorb)
Speed of the shadow : 11.3 km/s
Elongation to Moon & Sun : 17° (sunlit = 100%), Sun = 164°
Cross-track uncertainty : 3.3 mas = 4 km = 0.62 path-width (1-sig)
RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#50
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0