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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3 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] : 32cb294b-7697-451d-8453-0bb7ef262eb1 [observed]
Occultation Date + Time : 2021-02-24 at 23:29:23 UT +/- 0.02 min [1]
Object Designation : (4387) Tanaka
Orbit Class : MBA
Star Designation : GDR3 3898247390277539328
Star Coordinates (ICRF) : RA = 11 55 50.9987, DE = +06 08 08.743 [2]
Star Magnitudes : G = 11.66 mag, RP = 11.2 mag, BP = 11.95 mag
Object Magnitude : V = 16.2 mag
Estimated Magnitude Drop : 4.6 mag
Estimated Max. Duration : 1.0 sec
Object Mean Diameter : 9 km (src: astorb)
Speed of the shadow : 9.2 km/s
Elongation to Moon & Sun : 50° (sunlit = 93%), Sun = 159°
Cross-track uncertainty : 2.7 mas = 2 km = 0.31 path-width (1-sig)
RUWE and duplicate source : 1.41 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#57
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
