Event between (24978) 98HJ151 and star GA0640:14271043 with event index number of 1107805
Geocentric closest approach at 2022/06/23 17:26:53 UTC
J2000 position of star is 17:22:31.6 -24:26:08
Equinox of date position of star is 17:23:53.3 -24:27:19
Stellar brightness G=10.6,
use SENSEUP=4 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 131 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=23.8
TNO is 43.0 AU from the Sun
and 42.0 AU from the Earth.
The TNO is moving 24.3
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 1899 seconds.
The 1-sigma cross-track error in the shadow position is
5163 km.
The TNO has an absolute magnitude Hv=7.5
Diameter=190.6 km assuming a 5% albedo -- 7.8 sec chord
Diameter=77.8 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 24978, (2022/06/23 17:27UT) Object RA Dec mag sep mel Antares 16:30:47.4 -26:28:48 0.9 12.15 143 35Eta Oph 17:11:40.1 -15:45:04 2.6 9.16 135 PPM 266746 17:23:04.4 -24:55:36 6.5 0.51 131 PPM 266729 17:22:30.6 -24:42:16 8.5 0.40 132 PPM 266792 17:24:32.1 -24:26:22 9.6 0.14 131 24978 17:23:54.2 -24:27:20 10.6 131 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 24978, (2022/06/23 17:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 12.15 143 35Eta Oph 17:10:22.7 -15:43:29 2.6 9.16 135 PPM 266746 17:21:41.5 -24:54:23 6.5 0.51 131 PPM 266729 17:21:07.8 -24:41:01 8.5 0.40 132 PPM 266792 17:23:09.5 -24:25:11 9.6 0.14 131 24978 17:22:31.6 -24:26:08 10.6 131 Positions are for J2000
Event circumstances last updated at 2022/04/02 01:11:49 UT
Marc W. Buie, Southwest Research Institute