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Stellar Occultation by (77745) 2001 OT107 on 2023-08-09 (20:00:11 UT)

CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.


Event Details
 Occultation UUID [and db] : e7cfdfd0-ddb3-11f0-547e-1d614e4fed75 [observed]

 Occultation Date + Time   : 2023-08-09 at 20:00:11 UT +/- 0.0 min  [1]
 Object Designation        : (77745) 2001 OT107
 Star Designation          : GDR3 4189651712908475392
 Star Coordinates (ICRF)   : RA = 19 51 28.9157, DE = -12 13 37.335  [2]
 Star Magnitudes           : G = 13.05 mag, RP = 12.32 mag, BP = 13.64 mag
 Object Magnitude          : V = 17.41 mag
 Estimated Magnitude Drop  : 4.4 mag
 Estimated Max. Duration   : 0.5 sec
 Speed of the shadow       : 12.8 km/s
 Object Mean Diameter      : 6.6 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.6250 arcs/min @ PA = 296 deg
 Horizontal Parallax       : 5.1740 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 125° (sunlit = 36%), Sun = 159°
 Cross-track uncertainty   : 2.0 mas = 2 km = 0.37 path-width (1-sig)
 RUWE and duplicate source : 1.04 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#51
 Note                      : FP:true

 
 [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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