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Stellar Occultation by (407) Arachne on 2023-09-26 (04:20:54 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] : 9bde8700-ddb0-11f0-547e-909e7cefb395 [observed]

 Occultation Date + Time   : 2023-09-26 at 04:20:54 UT +/- 0.0 min  [1]
 Object Designation        : (407) Arachne
 Star Designation          : GDR3 3444375067711492224
 Star Coordinates (ICRF)   : RA = 05 46 07.3650, DE = +30 05 59.357  [2]
 Star Magnitudes           : G = 11.83 mag, RP = 11.36 mag, BP = 12.14 mag
 Object Magnitude          : V = 13.94 mag
 Estimated Magnitude Drop  : 2.3 mag
 Estimated Max. Duration   : 6.9 sec
 Speed of the shadow       : 13.9 km/s
 Object Mean Diameter      : 95.1 km  (src: astorb) => apparent = 60 mas
 Apparent Motion           : 0.5233 arcs/min @ PA = 85 deg
 Horizontal Parallax       : 4.0210 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 130° (sunlit = 85%), Sun = 96°
 Cross-track uncertainty   : 0.7 mas = 1 km = 0.01 path-width (1-sig)
 RUWE and duplicate source : 1.29 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#78
 Note                      : FP:true

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


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