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] : 21183c78-8cc6-4a46-b6c9-415394026073 [observed]
Occultation Date + Time : 2008-12-20 at 19:33:23 UT +/- 0.02 min [1]
Object Designation : (312) Pierretta
Orbit Class : MBA
Star Designation : GDR3 0185404877655354880
Star Coordinates (ICRF) : RA = 05 12 57.7471, DE = +35 34 52.981 [2]
Star Magnitudes : G = 11.86 mag, RP = 11.4 mag, BP = 12.15 mag
Object Magnitude : V = 13.74 mag
Estimated Magnitude Drop : 2.1 mag
Estimated Max. Duration : 3.4 sec
Object Mean Diameter : 50 km (src: astorb)
Speed of the shadow : 14.7 km/s
Elongation to Moon & Sun : 116° (sunlit = 36%), Sun = 165°
Cross-track uncertainty : 1.3 mas = 2 km = 0.04 path-width (1-sig)
RUWE and duplicate source : 2.08 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