Event between (469420) 01XP254 and star GA1000:03396784 with event index number of 1406575
Geocentric closest approach at 2025/01/18 19:36:31 UTC
J2000 position of star is 09:58:14.4 +11:19:15
Equinox of date position of star is 09:59:25.8 +11:12:49
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 28 degrees from the moon.
Moon is 77% illuminated.
TNO apparent brightness V=23.1
TNO is 33.4 AU from the Sun
and 32.6 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is
1652 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=168.3 km assuming a 5% albedo -- 8.1 sec chord
Diameter=68.7 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is 5:3EE
Star training set for 469420, (2025/01/18 19:37UT) Object RA Dec mag sep mel Regulus 10:09:42.3 +11:50:38 1.3 2.56 26 27Nu Leo 09:59:34.1 +12:19:27 5.3 1.12 29 PPM 126989 09:59:59.6 +10:50:24 7.7 0.37 28 PPM 126964 09:58:56.5 +11:15:58 10.0 0.17 28 PPM 126983 09:59:46.8 +11:19:22 10.1 0.13 28 469420 09:59:34.8 +11:12:01 16.8 28 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 469420, (2025/01/18 19:37UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 2.56 26 27Nu Leo 09:58:13.3 +12:26:41 5.3 1.12 29 PPM 126989 09:58:39.4 +10:57:38 7.7 0.37 28 PPM 126964 09:57:36.1 +11:23:11 10.0 0.17 28 PPM 126983 09:58:26.4 +11:26:36 10.1 0.13 28 469420 09:58:14.4 +11:19:15 16.8 28 Positions are for J2000
Event circumstances last updated at 2022/04/04 23:12:49 UT
Marc W. Buie, Southwest Research Institute