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):
Q: model quality flag (0-5, 5=highest) | P: rotation period | λ,β: ecl. lon. and lat. of spin axis (J2000) | JD: initial time (epoch) | φ0: initial rotation angle for JD0
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Map with groundtrack and observer stations
Event Details
Occultation UUID [and DB] : d6803b14-6c67-4bca-a15a-8c30e43ec626 [observed]
Occultation Date + Time : 2021-11-15 at 17:46:53 UT +/- 0.0 min [1]
Object Designation : (584) Semiramis
Orbit Class : MBA
Star Designation : GDR3 4180701516460514432
Star Coordinates (ICRF) : RA = 19 24 43.9856, DE = -16 54 06.581 [2]
Star Magnitudes : G = 11.61 mag, RP = 10.88 mag, BP = 12.19 mag
Object Magnitude : V = 12.83 mag
Estimated Magnitude Drop : 1.5 mag
Estimated Max. Duration : 1.5 sec
Object Mean Diameter : 54 km (src: astorb)
Speed of the shadow : 35.4 km/s
Elongation to Moon & Sun : 84° (sunlit = 88%), Sun = 57°
Cross-track uncertainty : 2.3 mas = 3 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 0.9 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#111
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
