Event between (525816) 05SF278 and star GA1040:00549551 with event index number of 2167460
Geocentric closest approach at 2028/01/25 23:01:26 UTC
J2000 position of star is 04:39:40.4 +15:15:31
Equinox of date position of star is 04:40:59.3 +15:18:09
Stellar brightness G=15.5,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=22.3
Object is 35.6 AU from the Sun
and 35.0 AU from the Earth.
Apparent velocity is 13.0
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 181 seconds.
The 1-sigma cross-track error in the shadow position is
1450 km.
The object has an absolute magnitude Hv=6.7
Diameter=279.3 km assuming a 5% albedo -- 21.0 sec chord
Diameter=114.0 km assuming a 30% albedo -- 8.6 sec chord
Dynamical classification is 7:4EEE
Star training set for 525816, (2028/01/25 23:09UT) Object RA Dec mag sep mel Aldebaran 04:37:32.1 +16:33:49 0.8 1.54 131 Bellatrix 05:26:38.3 +06:22:22 1.6 14.27 139 91Sig1Tau 04:40:45.5 +15:51:11 5.3 0.56 132 PPM 120087 04:39:08.0 +15:12:02 8.0 0.53 131 PPM 120103 04:40:34.5 +15:37:27 9.8 0.35 132 525816 04:41:16.3 +15:18:42 15.5 132 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 525816, (2028/01/25 23:09UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 1.54 131 Bellatrix 05:25:07.8 +06:20:58 1.6 14.27 139 91Sig1Tau 04:39:09.2 +15:47:58 5.3 0.56 132 PPM 120087 04:37:32.1 +15:08:46 8.0 0.53 131 PPM 120103 04:38:58.3 +15:34:15 9.8 0.35 132 525816 04:39:40.4 +15:15:31 15.5 132 Positions are for J2000
Event circumstances last updated at 2023/02/06 03:27:20 UT
Marc W. Buie, Southwest Research Institute