Event between 01XU254 and star GA1080:03169085 with event index number of 1031643
Geocentric closest approach at 2021/01/09 16:10:16 UTC
J2000 position of star is 09:00:13.6 +19:02:15
Equinox of date position of star is 09:01:24.9 +18:57:16
Stellar brightness G=14.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon.
Moon is 16% illuminated.
TNO apparent brightness V=22.9
TNO is 41.4 AU from the Sun
and 40.5 AU from the Earth.
The TNO is moving 23.2
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 63 seconds.
The 1-sigma cross-track error in the shadow position is
1467 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 12.1 sec chord
Diameter=114.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 01XU254, (2021/01/09 16:10UT) Object RA Dec mag sep mel Regulus 10:09:29.4 +11:51:49 1.3 17.86 93 PPM 125810 08:51:56.7 +18:45:09 6.2 2.25 113 PPM 125963 08:59:06.7 +19:12:08 8.3 0.60 111 PPM 126000 09:01:28.3 +18:50:54 9.8 0.11 111 01XU254 09:01:25.1 +18:57:16 14.6 111 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 01XU254, (2021/01/09 16:10UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 17.86 93 PPM 125810 08:50:45.0 +18:49:55 6.2 2.25 113 PPM 125963 08:57:55.1 +19:17:04 8.3 0.60 111 PPM 126000 09:00:16.9 +18:55:53 9.8 0.11 111 01XU254 09:00:13.6 +19:02:15 14.6 111 Positions are for J2000
Event circumstances last updated at 2020/12/14 19:18:57 UT
Marc W. Buie, Southwest Research Institute