Event between 12FN87 and star GA0800:04741843 with event index number of 2417193
Geocentric closest approach at 2022/06/04 18:09:23 UTC
J2000 position of star is 15:20:55.6 -09:31:16
Equinox of date position of star is 15:22:07.8 -09:36:00
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon.
Moon is 23% illuminated.
TNO apparent brightness V=22.5
TNO is 29.4 AU from the Sun
and 28.5 AU from the Earth.
The TNO is moving 21.5
km/sec on the sky relative to the star, or,
3.8 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is
2458 km.
The TNO has an absolute magnitude Hv=7.8
Diameter=169.8 km assuming a 5% albedo -- 7.9 sec chord
Diameter=69.3 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
Star training set for 12FN87, (2022/06/04 18:09UT) Object RA Dec mag sep mel Antares 16:30:47.2 -26:28:47 0.9 23.42 118 27Bet Lib 15:18:13.0 -09:27:51 2.6 0.98 97 31Eps Lib 15:25:25.0 -10:24:05 4.8 1.14 99 PPM 198456 15:20:34.5 -09:13:38 7.1 0.54 97 PPM 198479 15:21:50.2 -09:26:03 9.6 0.18 98 12FN87 15:22:08.5 -09:36:03 15.6 98 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 12FN87, (2022/06/04 18:09UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 23.42 118 27Bet Lib 15:17:00.3 -09:22:59 2.6 0.98 97 31Eps Lib 15:24:11.8 -10:19:23 4.8 1.14 99 PPM 198456 15:19:21.8 -09:08:49 7.1 0.54 97 PPM 198479 15:20:37.5 -09:21:16 9.6 0.18 98 12FN87 15:20:55.6 -09:31:16 15.6 98 Positions are for J2000
Event circumstances last updated at 2022/03/14 01:02:49 UT
Marc W. Buie, Southwest Research Institute