Event between (585913) 20QQ7 and star GA0940:00064714 with event index number of 2530975
Geocentric closest approach at 2022/07/17 20:01:31 UTC
J2000 position of star is 00:41:57.1 +05:02:57
Equinox of date position of star is 00:43:04.9 +05:10:08
Stellar brightness G=13.7,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 21 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=21.1
TNO is 14.1 AU from the Sun
and 13.8 AU from the Earth.
The TNO is moving 4.5
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 126 seconds.
The 1-sigma cross-track error in the shadow position is
575 km.
The TNO has an absolute magnitude Hv=9.3
Diameter=81.3 km assuming a 5% albedo -- 18.0 sec chord
Diameter=33.2 km assuming a 30% albedo -- 7.3 sec chord
Dynamical classification is CENTAURR
Star training set for 585913, (2022/07/17 20:02UT) Object RA Dec mag sep mel Fomalhaut 22:58:53.5 -29:30:08 1.2 42.75 24 Algenib 00:14:24.0 +15:18:31 2.8 12.35 25 96 G. Psc 00:49:34.0 +05:23:47 5.8 1.62 22 PPM 143847 00:46:14.3 +05:18:17 8.1 0.79 22 PPM 143756 00:41:28.9 +05:24:14 9.6 0.47 21 PPM 143803 00:43:58.8 +04:58:41 10.5 0.29 21 585913 00:43:07.0 +05:10:21 13.7 21 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 585913, (2022/07/17 20:02UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 42.75 24 Algenib 00:13:14.2 +15:11:01 2.8 12.35 25 96 G. Psc 00:48:24.1 +05:16:25 5.8 1.62 22 PPM 143847 00:45:04.5 +05:10:54 8.1 0.79 22 PPM 143756 00:40:19.1 +05:16:49 9.6 0.47 21 PPM 143803 00:42:49.0 +04:51:18 10.5 0.29 21 585913 00:41:57.1 +05:02:57 13.7 21 Positions are for J2000
Event circumstances last updated at 2021/11/15 00:47:40 UT
Marc W. Buie, Southwest Research Institute