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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2 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] : 60185c6d-603b-4229-8df6-b03482a5c9ab [observed]
Occultation Date + Time : 2012-09-22 at 19:06:29 UT +/- 0.01 min [1]
Object Designation : (267) Tirza
Orbit Class : MBA
Star Designation : GDR3 4071460397702213248
Star Coordinates (ICRF) : RA = 18 49 41.9735, DE = -28 25 15.640 [2]
Star Magnitudes : G = 10.96 mag, RP = 9.8 mag, BP = 12.37 mag
Object Magnitude : V = 15.04 mag
Estimated Magnitude Drop : 4.1 mag
Estimated Max. Duration : 4.0 sec
Object Mean Diameter : 53 km (src: astorb)
Speed of the shadow : 13.1 km/s
Elongation to Moon & Sun : 14° (sunlit = 50%), Sun = 101°
Cross-track uncertainty : 0.3 mas = 0 km = 0.01 path-width (1-sig)
RUWE and duplicate source : 0.81 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#130
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
