Event between (503858) 98HQ151 and star GA0800:20382975 with event index number of 2453153
Geocentric closest approach at 2028/08/14 21:26:12 UTC
J2000 position of star is 19:47:23.3 -09:29:46
Equinox of date position of star is 19:48:40.8 -09:26:11
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 130 degrees from the moon.
Moon is 36% illuminated.
Apparent brightness V=24.3
Object is 35.0 AU from the Sun
and 34.1 AU from the Earth.
Apparent velocity is 21.5
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is
2662 km.
The object has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 5.0 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is 3:2E
Star training set for 503858, (2028/08/14 21:26UT) Object RA Dec mag sep mel Fomalhaut 22:59:13.4 -29:28:11 1.2 48.70 96 Tarazed 19:47:37.2 +10:41:06 2.7 20.11 120 PPM 203194 19:43:36.6 -09:07:31 6.4 1.35 131 PPM 236484 19:48:44.4 -09:59:07 8.4 0.56 130 PPM 203299 19:49:02.5 -09:36:29 8.9 0.19 130 503858 19:48:57.0 -09:25:26 16.7 130 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 503858, (2028/08/14 21:26UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.7 -29:37:24 1.2 48.70 96 Tarazed 19:46:15.6 +10:36:48 2.7 20.11 120 PPM 203194 19:42:03.0 -09:11:39 6.4 1.35 131 PPM 236484 19:47:10.4 -10:03:27 8.4 0.56 130 PPM 203299 19:47:28.7 -09:40:50 8.9 0.19 130 503858 19:47:23.3 -09:29:46 16.7 130 Positions are for J2000
Event circumstances last updated at 2023/09/04 01:01:28 UT
Marc W. Buie, Southwest Research Institute