Event between (78799) 02XW93 and star GA1240:02848279 with event index number of 2436587
Geocentric closest approach at 2025/11/19 23:51:50 UTC
J2000 position of star is 06:42:53.9 +34:35:24
Equinox of date position of star is 06:44:30.1 +34:33:53
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=21.6
Object is 46.3 AU from the Sun
and 45.6 AU from the Earth.
Apparent velocity is 19.6
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 268 seconds.
The 1-sigma cross-track error in the shadow position is
2135 km.
The object has an absolute magnitude Hv=4.9
Diameter=605.4 km assuming a 5% albedo -- 32.2 sec chord
Diameter=247.1 km assuming a 30% albedo -- 13.2 sec chord
Dynamical classification is CENTAURR
Star training set for 78799, (2025/11/19 23:55UT) Object RA Dec mag sep mel Pollux 07:46:54.0 +27:57:42 1.1 14.83 122 34Bet Aur 06:01:25.7 +44:56:50 1.9 13.27 142 34The Gem 06:54:29.6 +33:55:39 3.6 2.14 134 PPM 071969 06:44:16.8 +34:04:10 7.9 0.50 136 PPM 071998 06:45:17.3 +34:17:02 9.2 0.31 136 PPM 071990 06:44:59.9 +34:35:27 10.5 0.08 136 78799 06:44:36.9 +34:33:46 15.5 135 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 78799, (2025/11/19 23:55UT) Object RA Dec mag sep mel Pollux 07:45:17.9 +28:01:33 1.1 14.83 122 34Bet Aur 05:59:31.6 +44:56:51 1.9 13.27 142 34The Gem 06:52:47.3 +33:57:39 3.6 2.14 134 PPM 071969 06:42:34.2 +34:05:48 7.9 0.50 136 PPM 071998 06:43:34.6 +34:18:42 9.2 0.31 136 PPM 071990 06:43:16.9 +34:37:06 10.5 0.08 136 78799 06:42:53.9 +34:35:24 15.5 136 Positions are for J2000
Event circumstances last updated at 2024/03/03 06:06:05 UT
Marc W. Buie, Southwest Research Institute