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Stellar Occultation by (176) Iduna on 2023-05-10 (00:57:45 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] : 980d0540-ddb3-11f0-547e-2b1cbd7faf8d [observed]

 Occultation Date + Time   : 2023-05-10 at 00:57:45 UT +/- 0.01 min  [1]
 Object Designation        : (176) Iduna
 Star Designation          : GDR3 4381080088912506752
 Star Coordinates (ICRF)   : RA = 17 02 14.0846, DE = +00 03 56.551  [2]
 Star Magnitudes           : G = 13.53 mag, RP = 12.74 mag, BP = 14.19 mag
 Object Magnitude          : V = 13.93 mag
 Estimated Magnitude Drop  : 1.0 mag
 Estimated Max. Duration   : 8.3 sec
 Speed of the shadow       : 14.6 km/s
 Object Mean Diameter      : 121.0 km  (src: astorb) => apparent = 63 mas
 Apparent Motion           : 0.4533 arcs/min @ PA = 311 deg
 Horizontal Parallax       : 3.2950 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 41° (sunlit = 78%), Sun = 147°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.0 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#90
 Note                      : FP:true

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


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