Event between (523790) 15HP9 and star GA0680:34246198 with event index number of 2606682
Geocentric closest approach at 2028/04/01 22:36:05 UTC
J2000 position of star is 19:09:18.6 -20:35:38
Equinox of date position of star is 19:10:45.6 -20:33:10
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon.
Moon is 41% illuminated.
Apparent brightness V=23.4
Object is 18.2 AU from the Sun
and 18.3 AU from the Earth.
Apparent velocity is 9.1
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 947 seconds.
The 1-sigma cross-track error in the shadow position is
1556 km.
The object has an absolute magnitude Hv=10.5
Diameter=50.1 km assuming a 5% albedo -- 5.3 sec chord
Diameter=20.5 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
Star training set for 523790, (2028/04/01 22:36UT) Object RA Dec mag sep mel Antares 16:31:08.7 -26:29:32 0.9 36.97 158 Nunki 18:57:00.9 -26:15:32 2.0 6.55 169 PPM 235581 19:11:28.0 -19:45:23 6.4 0.80 165 PPM 269408 19:12:11.8 -20:37:22 8.3 0.29 165 PPM 269396 19:11:31.4 -20:24:12 8.6 0.19 165 523790 19:10:59.0 -20:32:47 16.1 165 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, (2028/04/01 22:36UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 36.97 158 Nunki 18:55:15.9 -26:17:49 2.0 6.55 169 PPM 235581 19:09:48.2 -19:48:15 6.4 0.80 165 PPM 269408 19:10:31.4 -20:40:16 8.3 0.29 165 PPM 269396 19:09:51.1 -20:27:04 8.6 0.19 165 523790 19:09:18.6 -20:35:38 16.1 165 Positions are for J2000
Event circumstances last updated at 2024/06/23 21:29:47 UT
Marc W. Buie, Southwest Research Institute