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] : 0631b4f3-ab18-421f-a0ca-934ef0e400ac [observed]
Occultation Date + Time : 2017-11-18 at 23:59:22 UT +/- 0.01 min [1]
Object Designation : (789) Lena
Orbit Class : MBA
Star Designation : GDR3 3353463671051640960
Star Coordinates (ICRF) : RA = 06 55 40.9797, DE = +14 02 30.760 [2]
Star Magnitudes : G = 13.75 mag, RP = 13.46 mag, BP = 13.92 mag
Object Magnitude : V = 16.47 mag
Estimated Magnitude Drop : 2.8 mag
Estimated Max. Duration : 2.4 sec
Object Mean Diameter : 18 km (src: astorb)
Speed of the shadow : 7.7 km/s
Elongation to Moon & Sun : 139° (sunlit = 0%), Sun = 133°
Cross-track uncertainty : 0.7 mas = 1 km = 0.07 path-width (1-sig)
RUWE and duplicate source : 0.99 mas, dup.src = 1 (0:false, 1:true)
Ephemeris Reference : JPL#59
[1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0
