Event between (523790) 15HP9 and star GA0680:29790494 with event index number of 2606075
Geocentric closest approach at 2027/07/28 00:00:06 UTC
J2000 position of star is 18:36:46.8 -21:02:58
Equinox of date position of star is 18:38:14.4 -21:01:38
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 132 degrees from the moon.
Moon is 36% illuminated.
Apparent brightness V=23.1
Object is 18.0 AU from the Sun
and 17.0 AU from the Earth.
Apparent velocity is 19.5
km/sec on the sky relative to the star, or,
5.7 arcsec/hr.
The 1-sigma error in the time of the event is 364 seconds.
The 1-sigma cross-track error in the shadow position is
1503 km.
The object has an absolute magnitude Hv=10.5
Diameter=50.1 km assuming a 5% albedo -- 2.5 sec chord
Diameter=20.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2027/07/28 00:00UT) Object RA Dec mag sep mel Antares 16:31:06.2 -26:29:26 0.9 29.56 161 Nunki 18:56:58.4 -26:15:35 2.0 6.74 128 PPM 268697 18:40:32.0 -21:01:35 6.1 0.49 131 PPM 268618 18:37:00.0 -20:48:59 7.1 0.39 132 PPM 268656 18:38:38.2 -21:01:16 9.5 0.05 132 523790 18:38:25.5 -21:01:28 16.9 131 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, (2027/07/28 00:00UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 29.56 161 Nunki 18:55:15.9 -26:17:49 2.0 6.74 128 PPM 268697 18:38:53.3 -21:03:10 6.1 0.49 131 PPM 268618 18:35:21.4 -20:50:26 7.1 0.39 132 PPM 268656 18:36:59.5 -21:02:47 9.5 0.05 132 523790 18:36:46.8 -21:02:58 16.9 132 Positions are for J2000
Event circumstances last updated at 2024/06/22 21:27:39 UT
Marc W. Buie, Southwest Research Institute