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Stellar Occultation by (1796) Riga on 2024-09-12 (01:50:15 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] : 5cf75ee0-ddb5-11f0-547e-48bde6fcd0e9 [observed]

 Occultation Date + Time   : 2024-09-12 at 01:50:15 UT +/- 0.01 min  [1]
 Object Designation        : (1796) Riga
 Star Designation          : GDR3 3272354141377959936
 Star Coordinates (ICRF)   : RA = 03 57 21.9063, DE = +04 19 22.784  [2]
 Star Magnitudes           : G = 14.13 mag, RP = 13.38 mag, BP = 14.74 mag
 Object Magnitude          : V = 15.89 mag
 Estimated Magnitude Drop  : 2.0 mag
 Estimated Max. Duration   : 6.4 sec
 Speed of the shadow       : 11.6 km/s
 Object Mean Diameter      : 73.8 km  (src: astorb) => apparent = 33 mas
 Apparent Motion           : 0.3150 arcs/min @ PA = 152 deg
 Horizontal Parallax       : 2.8780 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 142° (sunlit = 59%), Sun = 111°
 Cross-track uncertainty   : 0.3 mas = 0 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#79
 Note                      : FP:true

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


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