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Stellar Occultation by (18045) 1999 RR100 on 2023-09-21 (00:13:54 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] : 0e789280-ddb4-11f0-547e-f14afd49a0b9 [observed]

 Occultation Date + Time   : 2023-09-21 at 00:13:54 UT +/- 0.02 min  [1]
 Object Designation        : (18045) 1999 RR100
 Star Designation          : GDR3 0137970842222774912
 Star Coordinates (ICRF)   : RA = 03 19 12.7782, DE = +34 59 09.643  [2]
 Star Magnitudes           : G = 11.88 mag, RP = 11.42 mag, BP = 12.17 mag
 Object Magnitude          : V = 18.18 mag
 Estimated Magnitude Drop  : 6.3 mag
 Estimated Max. Duration   : 2.8 sec
 Speed of the shadow       : 4.0 km/s
 Object Mean Diameter      : 11.1 km  (src: astorb) => apparent = 5 mas
 Apparent Motion           : 0.1183 arcs/min @ PA = 338 deg
 Horizontal Parallax       : 3.1340 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 165° (sunlit = 31%), Sun = 120°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.06 path-width (1-sig)
 RUWE and duplicate source : 1.02 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#57
 Note                      : FP:true

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


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