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Stellar Occultation by (1845) Helewalda on 2023-11-08 (20:42:24 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] : 366cb0f0-ddb4-11f0-547e-3c9efd7d2e32 [observed]

 Occultation Date + Time   : 2023-11-08 at 20:42:24 UT +/- 0.01 min  [1]
 Object Designation        : (1845) Helewalda
 Star Designation          : GDR3 2481632382802424448
 Star Coordinates (ICRF)   : RA = 01 21 33.3708, DE = -06 21 03.526  [2]
 Star Magnitudes           : G = 13.96 mag, RP = 13.29 mag, BP = 14.49 mag
 Object Magnitude          : V = 15.82 mag
 Estimated Magnitude Drop  : 2.0 mag
 Estimated Max. Duration   : 2.1 sec
 Speed of the shadow       : 9.1 km/s
 Object Mean Diameter      : 19.1 km  (src: astorb) => apparent = 13 mas
 Apparent Motion           : 0.3683 arcs/min @ PA = 256 deg
 Horizontal Parallax       : 4.3010 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 156° (sunlit = 19%), Sun = 147°
 Cross-track uncertainty   : 1.1 mas = 1 km = 0.09 path-width (1-sig)
 RUWE and duplicate source : 7.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#69
 Note                      : FP:true

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


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