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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6 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : a2a06731-a552-4dc5-8655-7ab8259a30f2 [observed]
Occultation Date + Time : 2011-08-17 at 21:28:24 UT +/- 0.02 min [1]
Object Designation : (895) Helio
Orbit Class : MBA
Star Designation : GDR3 2879242691083416960
Star Coordinates (ICRF) : RA = 23 40 19.0706, DE = +35 40 06.706 [2]
Star Magnitudes : G = 12.8 mag, RP = 12.27 mag, BP = 13.17 mag
Object Magnitude : V = 13.61 mag
Estimated Magnitude Drop : 1.2 mag
Estimated Max. Duration : 14.0 sec
Object Mean Diameter : 142 km (src: astorb)
Speed of the shadow : 10.2 km/s
Elongation to Moon & Sun : 29° (sunlit = 85%), Sun = 124°
Cross-track uncertainty : 2.3 mas = 4 km = 0.03 path-width (1-sig)
RUWE and duplicate source : 1.02 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#96
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0