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):
Occultation UUID [and DB] : a66fb960-90f1-443f-a136-a868d31e9be4 [observed]
Occultation Date + Time : 2018-08-04 at 21:17:54 UT +/- 0.01 min [1]
Object Designation : (4513) Louvre
Orbit Class : MBA
Star Designation : GDR3 2687421274024233344
Star Coordinates (ICRF) : RA = 21 40 59.8683, DE = +00 27 36.620 [2]
Star Magnitudes : G = 10.6 mag, RP = 9.93 mag, BP = 11.13 mag
Object Magnitude : V = 16.7 mag
Estimated Magnitude Drop : 6.1 mag
Estimated Max. Duration : 1.1 sec
Object Mean Diameter : 12 km (src: astorb)
Speed of the shadow : 11.2 km/s
Elongation to Moon & Sun : 78° (sunlit = 49%), Sun = 160°
Cross-track uncertainty : 1.7 mas = 2 km = 0.21 path-width (1-sig)
RUWE and duplicate source : 1.0 mas, dup.src = 0 (0:false, 1:true)
Ephemeris Reference : JPL#61
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0