Event between (470593) 08LP17 and star GA0620:23749929 with event index number of 2272177
Geocentric closest approach at 2025/04/27 00:30:04 UTC
J2000 position of star is 17:57:43.5 -27:22:24
Equinox of date position of star is 17:59:09.4 -27:22:27
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.6
TNO is 31.7 AU from the Sun
and 31.1 AU from the Earth.
The TNO is moving 11.6
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 203 seconds.
The 1-sigma cross-track error in the shadow position is
1538 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=346.7 km assuming a 5% albedo -- 25.7 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.5 sec chord
Dynamical classification is CENTAURR
Star training set for 470593, (2025/04/27 00:31UT) Object RA Dec mag sep mel Antares 16:30:57.8 -26:29:09 0.9 19.69 136 34Ups Sco 17:32:29.3 -37:18:48 2.7 11.43 121 3 Sgr 17:49:09.3 -27:50:17 4.2 2.30 119 PPM 267516 17:57:12.4 -26:56:01 8.5 0.64 117 PPM 267579 17:59:37.5 -27:28:42 9.3 0.12 116 470593 17:59:18.9 -27:22:28 15.9 116 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 470593, (2025/04/27 00:31UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.69 136 34Ups Sco 17:30:45.8 -37:17:46 2.7 11.43 121 3 Sgr 17:47:33.6 -27:49:51 4.2 2.30 119 PPM 267516 17:55:37.3 -26:55:53 8.5 0.64 117 PPM 267579 17:58:02.1 -27:28:39 9.3 0.12 116 470593 17:57:43.5 -27:22:24 15.9 116 Positions are for J2000
Event circumstances last updated at 2022/10/25 03:37:39 UT
Marc W. Buie, Southwest Research Institute