Event between (523591) 01QD298 and star GA0840:20078780 with event index number of 1920186
Geocentric closest approach at 2028/07/25 03:03:37 UTC
J2000 position of star is 23:58:19.4 -05:31:57
Equinox of date position of star is 23:59:32.7 -05:23:59
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 164 degrees from the moon.
Moon is 13% illuminated.
Apparent brightness V=22.6
Object is 42.4 AU from the Sun
and 41.8 AU from the Earth.
Apparent velocity is 12.5
km/sec on the sky relative to the star, or,
1.5 arcsec/hr.
The 1-sigma error in the time of the event is 572 seconds.
The 1-sigma cross-track error in the shadow position is
4229 km.
The object has an absolute magnitude Hv=6.2
Diameter=342.0 km assuming a 5% albedo -- 27.6 sec chord
Diameter=139.6 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 523591, (2028/07/25 03:04UT) Object RA Dec mag sep mel Fomalhaut 22:59:13.2 -29:28:12 1.2 28.02 153 Diphda 00:45:01.2 -17:49:49 2.0 16.65 149 30 Psc 00:03:25.5 -05:51:19 4.4 1.03 163 PPM 208175 23:59:16.8 -05:17:49 8.5 0.15 164 523591 23:59:47.2 -05:22:24 15.4 164 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 523591, (2028/07/25 03:04UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.7 -29:37:24 1.2 28.02 153 Diphda 00:43:35.8 -17:59:11 2.0 16.65 149 30 Psc 00:01:57.7 -06:00:52 4.4 1.03 163 PPM 208175 23:57:48.9 -05:27:21 8.5 0.15 164 523591 23:58:19.4 -05:31:57 15.4 164 Positions are for J2000
Event circumstances last updated at 2023/10/28 00:48:51 UT
Marc W. Buie, Southwest Research Institute