Event between (523790) 15HP9 and star GA0680:09347322 with event index number of 2601826
Geocentric closest approach at 2023/06/29 18:32:27 UTC
J2000 position of star is 17:10:02.1 -20:04:01
Equinox of date position of star is 17:11:24.9 -20:05:41
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 30 degrees from the moon.
Moon is 83% illuminated.
Apparent brightness V=22.6
Object is 16.3 AU from the Sun
and 15.3 AU from the Earth.
Apparent velocity is 20.2
km/sec on the sky relative to the star, or,
6.5 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
716 km.
The object has an absolute magnitude Hv=10.5
Diameter=50.1 km assuming a 5% albedo -- 2.4 sec chord
Diameter=20.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2023/06/29 18:32UT) Object RA Dec mag sep mel Antares 16:30:51.1 -26:28:56 0.9 11.29 22 35Eta Oph 17:11:43.6 -15:45:08 2.6 4.34 31 PPM 266364 17:06:09.0 -20:31:32 6.5 1.31 29 PPM 266456 17:09:56.1 -20:14:47 8.2 0.38 30 PPM 266505 17:11:47.6 -20:04:42 9.5 0.09 30 523790 17:11:25.6 -20:05:42 16.1 31 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 523790, (2023/06/29 18:32UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 11.29 22 35Eta Oph 17:10:22.7 -15:43:29 2.6 4.34 31 PPM 266364 17:04:45.3 -20:29:41 6.5 1.31 29 PPM 266456 17:08:32.5 -20:13:03 8.2 0.38 30 PPM 266505 17:10:24.1 -20:03:02 9.5 0.09 30 523790 17:10:02.1 -20:04:01 16.1 30 Positions are for J2000
Event circumstances last updated at 2023/04/20 03:43:37 UT
Marc W. Buie, Southwest Research Institute