Event between 13HW156 and star GA0800:04817364 with event index number of 2007734
Geocentric closest approach at 2021/07/24 22:28:33 UTC
J2000 position of star is 15:35:47.5 -09:34:00
Equinox of date position of star is 15:36:57.6 -09:38:13
Stellar brightness G=12.3,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 80 degrees from the moon.
Moon is 99% illuminated.
TNO apparent brightness V=23.0
TNO is 34.9 AU from the Sun
and 34.5 AU from the Earth.
The TNO is moving 7.4
km/sec on the sky relative to the star, or,
1.1 arcsec/hr.
The 1-sigma error in the time of the event is 296 seconds.
The 1-sigma cross-track error in the shadow position is
1537 km.
The TNO has an absolute magnitude Hv=7.4
Diameter=194.1 km assuming a 5% albedo -- 26.7 sec chord
Diameter=79.2 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is 3:2E
Star training set for 13HW156, (2021/07/24 22:35UT) Object RA Dec mag sep mel Antares 16:30:44.0 -26:28:41 0.9 21.10 63 27Bet Lib 15:18:10.2 -09:27:40 2.6 4.64 85 PPM 198725 15:35:36.5 -09:15:17 5.6 0.51 81 PPM 198710 15:34:55.8 -09:30:21 8.3 0.52 81 PPM 198734 15:36:03.7 -09:25:54 8.7 0.30 81 13HW156 15:36:57.7 -09:38:13 12.3 80 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 13HW156, (2021/07/24 22:35UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 21.10 63 27Bet Lib 15:17:00.3 -09:22:59 2.6 4.64 85 PPM 198725 15:34:26.4 -09:11:01 5.6 0.51 81 PPM 198710 15:33:45.6 -09:26:04 8.3 0.52 81 PPM 198734 15:34:53.5 -09:21:39 8.7 0.30 81 13HW156 15:35:47.5 -09:34:00 12.3 80 Positions are for J2000
Event circumstances last updated at 2021/07/13 23:51:45 UT
Marc W. Buie, Southwest Research Institute