Event between (612688) 03UT292 and star GA0920:02944152 with event index number of 2817690
Geocentric closest approach at 2028/12/25 20:03:52 UTC
J2000 position of star is 07:40:10.5 +03:07:24
Equinox of date position of star is 07:41:20.9 +03:04:13
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 92 degrees from the moon.
Moon is 68% illuminated.
TNO apparent brightness V=21.6
TNO is 27.8 AU from the Sun
and 26.9 AU from the Earth.
The TNO is moving 21.9
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 529 seconds.
The 1-sigma cross-track error in the shadow position is
2737 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 10.5 sec chord
Diameter=94.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
Star training set for 612688, (2028/12/25 20:04UT) Object RA Dec mag sep mel Sirius 06:46:25.7 -16:45:20 -1.5 24.05 84 Alhena 06:39:23.1 +16:22:19 1.9 20.29 74 PPM 153144 07:43:06.5 +03:33:17 5.8 0.61 93 PPM 153048 07:40:21.1 +03:27:45 8.0 0.53 92 PPM 153100 07:42:08.2 +02:49:27 9.7 0.26 93 612688 07:41:41.5 +03:03:17 16.1 93 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 612688, (2028/12/25 20:04UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:25 -1.5 24.05 84 Alhena 06:37:42.8 +16:23:56 1.9 20.29 74 PPM 153144 07:41:35.2 +03:37:28 5.8 0.61 93 PPM 153048 07:38:49.9 +03:31:50 8.0 0.53 92 PPM 153100 07:40:37.3 +02:53:35 9.7 0.26 93 612688 07:40:10.5 +03:07:24 16.1 92 Positions are for J2000
Event circumstances last updated at 2022/06/02 23:03:43 UT
Marc W. Buie, Southwest Research Institute