Cora»OccDetail

Stellar Occultation by (225088) Gonggong on 2024-10-07 (20:14:38 UT)

Event Details
Occultation UUID [and db] : 4a364180-df9b-11f0-76c1-b4b4e5ece438 [special] Occultation Date + Time : 2024-10-07 at 20:14:38 UT +/- 1.16 min [1] Object Designation : (225088) Gonggong Star Designation : GDR3 2602857349400467456 Star Coordinates (ICRF) : RA = 22 27 42.2511, DE = -10 46 32.266 [2] Star Magnitudes : G = 18.99 mag, RP = 18.01 mag, BP = 20.05 mag Object Magnitude : V = 21.43 mag Estimated Magnitude Drop : 2.6 mag Estimated Max. Duration : 77.2 sec Speed of the shadow : 20.5 km/s Object Mean Diameter : 1585.0 km (src: CORA) => apparent = 25 mas Apparent Motion : 0.0183 arcs/min @ PA = 253 deg Horizontal Parallax : 0.0990 arcs Dynamical Class : TNO Elongation to Moon & Sun : 84° (sunlit = 22%), Sun = 140° Cross-track uncertainty : 21.8 mas = 1404 km = 0.89 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#22 Note : FP:true Object is a <TNOs are Cool> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

Event Details

Occultation UUID [and db] : 4a364180-df9b-11f0-76c1-b4b4e5ece438 [special] Occultation Date + Time : 2024-10-07 at 20:14:38 UT +/- 1.16 min [1] Object Designation : (225088) Gonggong Star Designation : GDR3 2602857349400467456 Star Coordinates (ICRF) : RA = 22 27 42.2511, DE = -10 46 32.266 [2] Star Magnitudes : G = 18.99 mag, RP = 18.01 mag, BP = 20.05 mag Object Magnitude : V = 21.43 mag Estimated Magnitude Drop : 2.6 mag Estimated Max. Duration : 77.2 sec Speed of the shadow : 20.5 km/s Object Mean Diameter : 1585.0 km (src: CORA) => apparent = 25 mas Apparent Motion : 0.0183 arcs/min @ PA = 253 deg Horizontal Parallax : 0.0990 arcs Dynamical Class : TNO Elongation to Moon & Sun : 84° (sunlit = 22%), Sun = 140° Cross-track uncertainty : 21.8 mas = 1404 km = 0.89 path-width (1-sig) RUWE and duplicate source : 1.09 mas, dup.src = 0 (0:false, 1:true) Ephemeris Reference : JPL#22 Note : FP:true Object is a <TNOs are Cool> target ! [1] time t0 of closest geocentric approach c/a, [2] including proper motion until t0

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Occultation Ground Track
------------------------------------------------------------------------------------------- Time[UT] \| Lat----CENTR----Lon \| Alt Azm Sun \| Lat----EDGE1----Lon \| Lat----EDGE2----Lon hh:mm:ss \| +DD.dddd +DDD.dddd \| deg deg deg \| +DD.dddd +DDD.dddd \| +DD.dddd +DDD.dddd ------------------------------------------------------------------------------------------- 20:09:49 +19.1113 +079.2224 +22 249 -63 +11.8608 +080.1368 +27.2697 +080.9211 20:11:14 +10.2637 +052.7972 +49 240 -85 +03.3487 +054.8330 +17.5694 +051.4027 20:12:39 +03.8997 +035.1682 +67 231 -71 -02.9442 +037.3812 +10.9878 +033.2302 20:14:04 -01.3665 +019.6154 +80 198 -56 -08.2256 +021.7759 +05.6477 +017.5168 20:15:29 -05.8085 +004.2689 +77 114 -40 -12.7326 +006.2265 +01.2092 +002.1713 20:16:54 -09.4149 -012.2446 +62 095 -24 -16.4337 -010.6348 -02.3376 -014.2653 20:18:20 -11.8471 -032.1406 +43 094 -04 -18.9748 -031.0229 -04.6396 -034.1854 20:19:45 -10.1627 -070.1818 +07 100 +33 -17.8233 -067.4526 -09.2083 -043.1573 Longitude measured positiv to the East. Azimuth (Azm) measured from North to East.

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CTU: Cross-track uncertainty (zero means: use the nominal prediction value, see event details below). Offsets and CTU all in mas.