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Stellar Occultation by (7990) 1981 SN1 on 2023-07-08 (00:17:09 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] : ce223c40-ddb3-11f0-547e-2618f6f3cda7 [observed] Occultation Date + Time : 2023-07-08 at 00:17:09 UT +/- 0.0 min [1] Object Designation : (7990) 1981 SN1 Star Designation : GDR3 4071057839093714048 Star Coordinates (ICRF) : RA = 17 56 09.6653, DE = -20 42 59.321 [2] Star Magnitudes : G = 13.22 mag, RP = 12.21 mag, BP = 14.28 mag Object Magnitude : V = 18.28 mag Estimated Magnitude Drop : 5.1 mag Estimated Max. Duration : 0.4 sec Speed of the shadow : 11.9 km/s Object Mean Diameter : 5.3 km (src: astorb) => apparent = 4 mas Apparent Motion : 0.5083 arcs/min @ PA = 267 deg Horizontal Parallax : 4.5300 arcs Dynamical Class : MBA Elongation to Moon & Sun : 80° (sunlit = 73%), Sun = 163° Cross-track uncertainty : 0.3 mas = 0 km = 0.08 path-width (1-sig) RUWE and duplicate source : 0.95 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#55 Note : FP:true [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0


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