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] : 39b2c0a3-3519-4bb2-a8fe-2ae0ba584c5d [observed]
Occultation Date + Time : 2020-10-26 at 19:52:20 UT +/- 0.02 min [1]
Object Designation : (106) Dione
Orbit Class : MBA
Star Designation : GDR3 6830120159631392768
Star Coordinates (ICRF) : RA = 21 30 15.0677, DE = -20 23 45.027 [2]
Star Magnitudes : G = 14.7 mag, RP = 14.06 mag, BP = 15.19 mag
Object Magnitude : V = 13.02 mag
Estimated Magnitude Drop : 0.2 mag
Estimated Max. Duration : 15.1 sec
Object Mean Diameter : 147 km (src: astorb)
Speed of the shadow : 9.7 km/s
Elongation to Moon & Sun : 23° (sunlit = 81%), Sun = 104°
Cross-track uncertainty : 2.3 mas = 4 km = 0.03 path-width (1-sig)
RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#141
Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0