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):
Occultation UUID [and DB] : d830bbce-ada8-46f6-9ef1-8c2ba25489cd [observed]
Occultation Date + Time : 2020-07-28 at 22:18:47 UT +/- 0.03 min [1]
Object Designation : (4461) Sayama
Orbit Class : MBA
Star Designation : GDR3 4182896210386066688
Star Coordinates (ICRF) : RA = 19 39 49.5616, DE = -14 39 11.920 [2]
Star Magnitudes : G = 13.0 mag, RP = 12.23 mag, BP = 13.65 mag
Object Magnitude : V = 14.79 mag
Estimated Magnitude Drop : 2.0 mag
Estimated Max. Duration : 1.6 sec
Object Mean Diameter : 17 km (src: astorb)
Speed of the shadow : 11.1 km/s
Elongation to Moon & Sun : 59° (sunlit = 66%), Sun = 166°
Cross-track uncertainty : 1.7 mas = 1 km = 0.11 path-width (1-sig)
RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#55
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0