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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4 observations 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] : 2a21c1ac-b1dd-4ff2-865a-bc150ef45e56 [observed]
Occultation Date + Time : 2021-04-23 at 20:33:23 UT +/- 0.01 min [1]
Object Designation : (3128) Obruchev
Orbit Class : MBA
Star Designation : GDR3 3415254953221068928
Star Coordinates (ICRF) : RA = 05 06 51.7187, DE = +22 18 07.413 [2]
Star Magnitudes : G = 12.41 mag, RP = 11.87 mag, BP = 12.78 mag
Object Magnitude : V = 18.87 mag
Estimated Magnitude Drop : 6.5 mag
Estimated Max. Duration : 0.3 sec
Object Mean Diameter : 12 km (src: astorb)
Speed of the shadow : 35.4 km/s
Elongation to Moon & Sun : 91° (sunlit = 85%), Sun = 44°
Cross-track uncertainty : 0.7 mas = 2 km = 0.18 path-width (1-sig)
RUWE and duplicate source : 0.96 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#59
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
