Event between 12HX87 and star GA0640:06680510 with event index number of 2246059
Geocentric closest approach at 2022/09/05 02:27:03 UTC
J2000 position of star is 15:00:17.9 -25:37:44
Equinox of date position of star is 15:01:36.3 -25:42:58
Stellar brightness G=12.2,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 40 degrees from the moon.
Moon is 65% illuminated.
TNO apparent brightness V=22.6
TNO is 37.3 AU from the Sun
and 37.7 AU from the Earth.
The TNO is moving 18.3
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 269 seconds.
The 1-sigma cross-track error in the shadow position is
1846 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 15.3 sec chord
Diameter=114.5 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is SCATNEAR
Star training set for 12HX87, (2022/09/05 02:27UT) Object RA Dec mag sep mel Antares 16:30:48.1 -26:28:49 0.9 20.01 20 7Del Sco 16:01:40.7 -22:41:04 2.3 14.02 28 20Sig Lib 15:05:24.2 -25:22:11 3.3 0.92 40 PPM 263612 14:58:51.9 -25:31:54 7.3 0.65 41 PPM 263657 15:01:21.3 -25:41:21 9.8 0.07 40 12HX87 15:01:38.0 -25:43:04 12.2 40 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 12HX87, (2022/09/05 02:27UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 20.01 20 7Del Sco 16:00:20.0 -22:37:19 2.3 14.02 28 20Sig Lib 15:04:04.1 -25:16:56 3.3 0.92 40 PPM 263612 14:57:32.0 -25:26:30 7.3 0.65 41 PPM 263657 15:00:01.3 -25:36:00 9.8 0.07 40 12HX87 15:00:17.9 -25:37:44 12.2 40 Positions are for J2000
Event circumstances last updated at 2022/03/14 01:07:29 UT
Marc W. Buie, Southwest Research Institute