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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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