Event between 04HC79 and star GA0660:09473287 with event index number of 1969288
Geocentric closest approach at 2022/02/12 11:35:53 UTC
J2000 position of star is 17:06:08.4 -23:03:33
Equinox of date position of star is 17:07:28.0 -23:05:14
Stellar brightness G=12.4,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 161 degrees from the moon.
Moon is 84% illuminated.
TNO apparent brightness V=23.3
TNO is 39.8 AU from the Sun
and 40.1 AU from the Earth.
The TNO is moving 17.7
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 906 seconds.
The 1-sigma cross-track error in the shadow position is
2574 km.
The TNO has an absolute magnitude Hv=7.1
Diameter=232.3 km assuming a 5% albedo -- 13.1 sec chord
Diameter=94.8 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
Star training set for 04HC79, (2022/02/12 11:36UT) Object RA Dec mag sep mel Antares 16:30:46.0 -26:28:45 0.9 8.99 154 35Eta Oph 17:11:38.9 -15:45:03 2.6 7.40 159 PPM 266403 17:07:31.2 -21:35:36 6.3 1.49 161 PPM 266355 17:05:48.3 -23:25:12 7.3 0.51 161 PPM 266396 17:07:19.8 -22:53:13 9.4 0.20 161 04HC79 17:07:28.7 -23:05:15 12.4 162 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 04HC79, (2022/02/12 11:36UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 8.99 154 35Eta Oph 17:10:22.7 -15:43:29 2.6 7.40 159 PPM 266403 17:06:11.8 -21:33:54 6.3 1.49 161 PPM 266355 17:04:27.8 -23:23:26 7.3 0.51 161 PPM 266396 17:05:59.7 -22:51:31 9.4 0.20 161 04HC79 17:06:08.4 -23:03:33 12.4 161 Positions are for J2000
Event circumstances last updated at 2021/12/03 01:45:09 UT
Marc W. Buie, Southwest Research Institute