Event between (66452) 99OF4 and star GA0820:22409015 with event index number of 2400500
Geocentric closest approach at 2024/08/31 23:23:13 UTC
J2000 position of star is 23:07:57.2 -07:04:59
Equinox of date position of star is 23:09:13.3 -06:57:02
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 4% illuminated.
Apparent brightness V=23.4
Object is 46.4 AU from the Sun
and 45.4 AU from the Earth.
Apparent velocity is 25.1
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 163 seconds.
The 1-sigma cross-track error in the shadow position is
2359 km.
The object has an absolute magnitude Hv=6.8
Diameter=251.2 km assuming a 5% albedo -- 10.4 sec chord
Diameter=102.6 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 66452, (2024/08/31 23:23UT) Object RA Dec mag sep mel Fomalhaut 22:59:00.4 -29:29:27 1.2 22.67 155 Markab 23:05:59.5 +15:20:18 2.5 22.30 136 82 Aqr 23:03:49.3 -06:26:28 6.0 1.44 151 PPM 207212 23:10:28.3 -07:10:49 8.0 0.38 150 PPM 207174 23:08:59.4 -06:59:24 9.6 0.07 150 66452 23:09:14.0 -06:56:57 15.9 150 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 66452, (2024/08/31 23:23UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 22.67 155 Markab 23:04:45.8 +15:12:18 2.5 22.30 136 82 Aqr 23:02:32.5 -06:34:27 6.0 1.44 151 PPM 207212 23:09:11.5 -07:18:52 8.0 0.38 150 PPM 207174 23:07:42.6 -07:07:26 9.6 0.07 150 66452 23:07:57.2 -07:04:59 15.9 150 Positions are for J2000
Event circumstances last updated at 2024/06/12 03:39:51 UT
Marc W. Buie, Southwest Research Institute