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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5 observations found in db: euraster
Available (probably) matching predictions (click on the link to switch):
Occultation UUID [and DB] : 4ca6050c-6b51-4224-a08b-6e8779ae991a [observed]
Occultation Date + Time : 2011-05-14 at 01:12:22 UT +/- 0.09 min [1]
Object Designation : (50000) Quaoar
Orbit Class : TNO
Star Designation : GDR3 4136825092666494720
Star Coordinates (ICRF) : RA = 17 28 13.2532, DE = -15 26 03.489 [2]
Star Magnitudes : G = 16.93 mag, RP = 16.25 mag, BP = 17.44 mag
Object Magnitude : V = 18.84 mag
Estimated Magnitude Drop : 2.1 mag
Estimated Max. Duration : 53.5 sec
Object Mean Diameter : 1126 km (src: astorb)
Speed of the shadow : 21.0 km/s
Elongation to Moon & Sun : 77° (sunlit = 84%), Sun = 150°
Cross-track uncertainty : 2.7 mas = 82 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 1.03 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#45
Object is a "TNOs are cool" target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0