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Stellar Occultation by (5145) Pholus on 2023-05-27 (23:38:35 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] : a7a0e7b0-ddb3-11f0-547e-d8e8eaff4a43 [observed]

 Occultation Date + Time   : 2023-05-27 at 23:38:35 UT +/- 1.7 min  [1]
 Object Designation        : (5145) Pholus
 Star Designation          : GDR3 4104866649008641792
 Star Coordinates (ICRF)   : RA = 18 31 58.8628, DE = -12 57 03.665  [2]
 Star Magnitudes           : G = 12.52 mag, RP = 11.59 mag, BP = 13.39 mag
 Object Magnitude          : V = 21.9 mag
 Estimated Magnitude Drop  : 9.4 mag
 Estimated Max. Duration   : 6.2 sec
 Speed of the shadow       : 21.5 km/s
 Object Mean Diameter      : 132.3 km  (src: astorb) => apparent = 6 mas
 Apparent Motion           : 0.0617 arcs/min @ PA = 270 deg
 Horizontal Parallax       : 0.3050 arcs
 Dynamical Class           : CEN
 Elongation to Moon & Sun  : 116° (sunlit = 53%), Sun = 147°
 Cross-track uncertainty   : 45.0 mas = 941 km = 7.11 path-width (1-sig)
 RUWE and duplicate source : 1.19 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#24
 Note                      : FP:true

 Object is a <TNOs are Cool> target !

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


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