Event between (24978) 98HJ151 and star GA0640:11482462 with event index number of 278338
Geocentric closest approach at 2020/07/19 03:42:14 UTC
J2000 position of star is 17:09:07.8 -24:06:16
Equinox of date position of star is 17:10:22.7 -24:07:46
Stellar brightness G=16.5,
use SENSEUP=128
Star is 161 degrees from the moon.
Moon is 3% illuminated.
TNO apparent brightness V=26.4
TNO is 42.9 AU from the Sun
and 42.1 AU from the Earth.
The TNO is moving 18.4
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 2009 seconds.
The 1-sigma cross-track error in the shadow position is
5363 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=190.6 km assuming a 5% albedo -- 3.3 sec chord
Diameter=77.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CLASSICAL
Star training set for 24978, (2020/07/19 03:42UT) Object RA Dec mag sep mel Antares 16:30:40.2 -26:28:33 0.9 9.27 152 35Eta Oph 17:11:33.5 -15:44:56 2.6 8.39 159 26 Oph 17:01:25.2 -25:01:07 5.8 2.22 159 PPM 266409 17:07:48.9 -23:55:51 8.2 0.62 161 PPM 266477 17:10:38.0 -23:55:59 9.3 0.20 161 24978 17:10:22.9 -24:07:46 16.5 161 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, (2020/07/19 03:42UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.27 152 35Eta Oph 17:10:22.7 -15:43:29 2.6 8.39 159 26 Oph 17:00:09.6 -24:59:22 5.8 2.22 159 PPM 266409 17:06:33.9 -23:54:17 8.2 0.62 161 PPM 266477 17:09:22.9 -23:54:30 9.3 0.20 161 24978 17:09:07.8 -24:06:16 16.5 161 Positions are for J2000
Event circumstances last updated at 2020/06/21 05:14:41 UT
Marc W. Buie, Southwest Research Institute