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] : eefc249d-1f49-48fc-897a-1e272b14c50e [observed]
Occultation Date + Time : 2020-03-13 at 23:22:57 UT +/- 0.03 min [1]
Object Designation : (850) Altona
Orbit Class : MBA
Star Designation : GDR3 3743364478672085248
Star Coordinates (ICRF) : RA = 13 22 03.5639, DE = +14 17 05.452 [2]
Star Magnitudes : G = 13.26 mag, RP = 12.69 mag, BP = 13.66 mag
Object Magnitude : V = 14.04 mag
Estimated Magnitude Drop : 1.2 mag
Estimated Max. Duration : 7.2 sec
Object Mean Diameter : 81 km (src: astorb)
Speed of the shadow : 11.2 km/s
Elongation to Moon & Sun : 43° (sunlit = 76%), Sun = 152°
Cross-track uncertainty : 3.3 mas = 4 km = 0.06 path-width (1-sig)
RUWE and duplicate source : 0.98 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#67
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0