Event between (305543) 08QY40 and star GA0840:00109937 with event index number of 2183504
Geocentric closest approach at 2022/07/16 20:02:09 UTC
J2000 position of star is 01:21:37.3 -04:47:17
Equinox of date position of star is 01:22:43.8 -04:40:26
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon.
Moon is 87% illuminated.
TNO apparent brightness V=21.3
TNO is 36.8 AU from the Sun
and 36.7 AU from the Earth.
The TNO is moving 4.4
km/sec on the sky relative to the star, or,
0.6 arcsec/hr.
The 1-sigma error in the time of the event is 367 seconds.
The 1-sigma cross-track error in the shadow position is
1607 km.
The TNO has an absolute magnitude Hv=5.5
Diameter=474.3 km assuming a 5% albedo -- 108.1 sec chord
Diameter=193.6 km assuming a 30% albedo -- 44.1 sec chord
Dynamical classification is SCATNEAR
Star training set for 305543, (2022/07/16 20:02UT) Object RA Dec mag sep mel Fomalhaut 22:58:53.5 -29:30:08 1.2 42.08 17 68Omi Cet 02:20:29.2 -02:52:35 2.0 14.51 55 PPM 183408 01:25:57.5 -02:43:55 6.1 2.10 41 PPM 183357 01:23:15.8 -04:26:49 8.4 0.26 40 PPM 183341 01:22:30.4 -04:44:19 9.5 0.09 40 305543 01:22:45.7 -04:40:14 15.7 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 305543, (2022/07/16 20:02UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 42.08 17 68Omi Cet 02:19:20.8 -02:58:45 2.0 14.51 55 PPM 183408 01:24:48.7 -02:50:56 6.1 2.10 41 PPM 183357 01:22:07.3 -04:33:52 8.4 0.26 40 PPM 183341 01:21:22.0 -04:51:22 9.5 0.09 40 305543 01:21:37.3 -04:47:17 15.7 40 Positions are for J2000
Event circumstances last updated at 2021/12/07 01:51:47 UT
Marc W. Buie, Southwest Research Institute