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Stellar Occultation by (1203) Nanna on 2023-05-23 (23:08:28 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] : 9bcc0910-ddb3-11f0-547e-d48623b5ada8 [observed]

 Occultation Date + Time   : 2023-05-23 at 23:08:28 UT +/- 0.0 min  [1]
 Object Designation        : (1203) Nanna
 Star Designation          : GDR3 4123146923167314944
 Star Coordinates (ICRF)   : RA = 17 35 42.8528, DE = -18 42 54.319  [2]
 Star Magnitudes           : G = 13.32 mag, RP = 12.36 mag, BP = 14.23 mag
 Object Magnitude          : V = 16.75 mag
 Estimated Magnitude Drop  : 3.5 mag
 Estimated Max. Duration   : 2.8 sec
 Speed of the shadow       : 12.7 km/s
 Object Mean Diameter      : 35.2 km  (src: astorb) => apparent = 20 mas
 Apparent Motion           : 0.4333 arcs/min @ PA = 282 deg
 Horizontal Parallax       : 3.6190 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 150° (sunlit = 18%), Sun = 158°
 Cross-track uncertainty   : 0.4 mas = 0 km = 0.02 path-width (1-sig)
 RUWE and duplicate source : 3.82 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#74
 Note                      : FP:true

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


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