Event between (548504) 10NF146 and star GA0840:04235556 with event index number of 2399816
Geocentric closest approach at 2028/03/21 00:23:38 UTC
J2000 position of star is 13:04:55.8 -04:33:11
Equinox of date position of star is 13:06:05.4 -04:40:21
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon.
Moon is 22% illuminated.
TNO apparent brightness V=22.7
TNO is 43.2 AU from the Sun
and 42.2 AU from the Earth.
The TNO is moving 24.0
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 338 seconds.
The 1-sigma cross-track error in the shadow position is
4795 km.
The TNO has an absolute magnitude Hv=6.3
Diameter=326.6 km assuming a 5% albedo -- 13.6 sec chord
Diameter=133.3 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 548504, (2028/03/21 00:26UT) Object RA Dec mag sep mel Spica 13:26:41.1 -11:18:28 1.0 8.30 101 44 Vir 13:01:06.9 -03:57:49 5.8 1.51 109 PPM 196167 13:07:53.7 -04:59:47 8.2 0.48 107 PPM 196146 13:06:35.5 -04:43:31 9.6 0.05 108 548504 13:06:23.5 -04:42:13 16.8 108 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 548504, (2028/03/21 00:26UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 8.30 101 44 Vir 12:59:39.5 -03:48:43 5.8 1.51 109 PPM 196167 13:06:26.0 -04:50:46 8.2 0.48 107 PPM 196146 13:05:07.9 -04:34:28 9.6 0.05 108 548504 13:04:55.8 -04:33:11 16.8 108 Positions are for J2000
Event circumstances last updated at 2022/05/23 23:13:00 UT
Marc W. Buie, Southwest Research Institute