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] : 556fbff2-f734-4678-8dfb-ee1841d02944 [observed]
Occultation Date + Time : 2011-05-04 at 02:38:34 UT +/- 0.11 min [1]
Object Designation : (50000) Quaoar
Orbit Class : TNO
Star Designation : GDR3 4136810730296078208
Star Coordinates (ICRF) : RA = 17 28 50.8012, DE = -15 27 42.725 [2]
Star Magnitudes : G = 15.65 mag, RP = 14.78 mag, BP = 16.42 mag
Object Magnitude : V = 18.87 mag
Estimated Magnitude Drop : 3.3 mag
Estimated Max. Duration : 61.6 sec
Object Mean Diameter : 1126 km (src: astorb)
Speed of the shadow : 18.3 km/s
Elongation to Moon & Sun : 148° (sunlit = 1%), Sun = 140°
Cross-track uncertainty : 2.7 mas = 82 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 1.07 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