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: sodis
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] : dcb42abb-cb08-408f-9756-59afa5fdba13 [observed]
Occultation Date + Time : 2023-08-14 at 19:07:27 UT +/- 0.06 min [1]
Object Designation : (54) Alexandra
Orbit Class : MBA
Star Designation : GDR3 6768390205298913152
Star Coordinates (ICRF) : RA = 19 42 30.1721, DE = -24 04 20.549 [2]
Star Magnitudes : G = 12.5 mag, RP = 11.9 mag, BP = 12.76 mag
Object Magnitude : V = 10.88 mag
Estimated Magnitude Drop : 0.2 mag
Estimated Max. Duration : 24.6 sec
Object Mean Diameter : 166 km (src: astorb)
Speed of the shadow : 6.7 km/s
Elongation to Moon & Sun : 169° (sunlit = 2%), Sun = 151°
Cross-track uncertainty : 9.0 mas = 8 km = 0.05 path-width (1-sig)
RUWE and duplicate source : 1.01 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#197
Object is a Gaia mass determination target !
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
