Event between 99CH119 and star GA1100:03257324 with event index number of 2585742
Geocentric closest approach at 2023/02/24 00:12:33 UTC
J2000 position of star is 10:15:20.7 +20:44:27
Equinox of date position of star is 10:16:36.6 +20:37:32
Stellar brightness G=14.0,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 123 degrees from the moon.
Moon is 18% illuminated.
Apparent brightness V=23.8
Object is 46.1 AU from the Sun
and 45.1 AU from the Earth.
Apparent velocity is 25.9
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 508 seconds.
The 1-sigma cross-track error in the shadow position is
4998 km.
The object has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 8.3 sec chord
Diameter=87.7 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 99CH119, (2023/02/24 00:13UT) Object RA Dec mag sep mel Regulus 10:09:36.2 +11:51:11 1.3 8.93 125 PPM 100194 10:15:46.0 +21:03:07 6.5 0.47 122 PPM 100190 10:15:37.3 +20:19:13 9.7 0.38 123 99CH119 10:16:37.0 +20:37:30 14.0 123 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 99CH119, (2023/02/24 00:13UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 8.93 125 PPM 100194 10:14:29.5 +21:10:03 6.5 0.47 122 PPM 100190 10:14:21.0 +20:26:10 9.7 0.38 123 99CH119 10:15:20.7 +20:44:27 14.0 123 Positions are for J2000
Event circumstances last updated at 2023/01/10 03:22:51 UT
Marc W. Buie, Southwest Research Institute