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Stellar Occultation by (757) Portlandia on 2023-04-15 (19:36:01 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] : 8ca16fc0-ddb3-11f0-547e-b807cf540275 [observed]

 Occultation Date + Time   : 2023-04-15 at 19:36:01 UT +/- 0.0 min  [1]
 Object Designation        : (757) Portlandia
 Star Designation          : GDR3 0690900572519573376
 Star Coordinates (ICRF)   : RA = 08 51 16.8294, DE = +25 35 34.009  [2]
 Star Magnitudes           : G = 13.12 mag, RP = 12.48 mag, BP = 13.6 mag
 Object Magnitude          : V = 14.42 mag
 Estimated Magnitude Drop  : 1.6 mag
 Estimated Max. Duration   : 2.6 sec
 Speed of the shadow       : 12.4 km/s
 Object Mean Diameter      : 32.1 km  (src: astorb) => apparent = 23 mas
 Apparent Motion           : 0.5417 arcs/min @ PA = 128 deg
 Horizontal Parallax       : 4.6480 arcs
 Dynamical Class           : MBA
 Elongation to Moon & Sun  : 160° (sunlit = 23%), Sun = 103°
 Cross-track uncertainty   : 0.7 mas = 0 km = 0.03 path-width (1-sig)
 RUWE and duplicate source : 0.98 mas, dup.src = 0  (0:false, 1:true)

 Ephemeris Reference       : JPL#112
 Note                      : FP:true

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


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