Event between (523780) 15AN281 and star GA1020:03572775 with event index number of 2353915
Geocentric closest approach at 2028/04/18 00:23:50 UTC
J2000 position of star is 12:29:33.9 +12:03:26
Equinox of date position of star is 12:30:48.3 +11:55:20
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 129 degrees from the moon.
Moon is 38% illuminated.
Apparent brightness V=21.5
Object is 42.0 AU from the Sun
and 41.2 AU from the Earth.
Apparent velocity is 22.7
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 99 seconds.
The 1-sigma cross-track error in the shadow position is
1896 km.
The object has an absolute magnitude Hv=5.2
Diameter=544.5 km assuming a 5% albedo -- 24.7 sec chord
Diameter=222.3 km assuming a 30% albedo -- 10.1 sec chord
Dynamical classification is SCATEXTD
Star training set for 523780, (2028/04/18 00:28UT) Object RA Dec mag sep mel Arcturus 14:16:57.7 +19:02:24 0.0 26.47 105 Vindemiatrix 13:03:35.3 +10:48:27 2.8 8.06 121 20 Vir 12:34:28.8 +10:08:23 6.3 1.96 128 PPM 129121 12:33:05.2 +11:58:19 8.0 0.52 129 PPM 129101 12:31:20.5 +11:47:51 9.1 0.13 129 523780 12:30:59.9 +11:54:04 16.9 129 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 523780, (2028/04/18 00:28UT) Object RA Dec mag sep mel Arcturus 14:15:38.0 +19:10:14 0.0 26.47 105 Vindemiatrix 13:02:10.2 +10:57:33 2.8 8.06 121 20 Vir 12:33:02.8 +10:17:44 6.3 1.96 128 PPM 129121 12:31:39.3 +12:07:40 8.0 0.52 129 PPM 129101 12:29:54.5 +11:57:13 9.1 0.13 129 523780 12:29:33.9 +12:03:26 16.9 129 Positions are for J2000
Event circumstances last updated at 2024/06/23 21:31:09 UT
Marc W. Buie, Southwest Research Institute