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Stellar Occultation by (1345) Potomac on 2023-09-09 (21:11:56 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] : 0657bb30-ddb4-11f0-547e-1dc4addf6439 [observed]

 Occultation Date + Time   : 2023-09-09 at 21:11:56 UT +/- 0.01 min  [1]
 Object Designation        : (1345) Potomac
 Star Designation          : GDR3 6840977218480329600
 Star Coordinates (ICRF)   : RA = 21 34 39.9903, DE = -16 44 21.687  [2]
 Star Magnitudes           : G = 9.42 mag, RP = 8.91 mag, BP = 9.76 mag
 Object Magnitude          : V = 16.32 mag
 Estimated Magnitude Drop  : 6.9 mag
 Estimated Max. Duration   : 5.1 sec
 Speed of the shadow       : 14.0 km/s
 Object Mean Diameter      : 71.8 km  (src: astorb) => apparent = 28 mas
 Apparent Motion           : 0.3250 arcs/min @ PA = 243 deg
 Horizontal Parallax       : 2.4530 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 150° (sunlit = 22%), Sun = 154°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.93 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#76
 Note                      : FP:true

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


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