Event between (575713) 11UT410 and star GA1140:00400220 with event index number of 2520606
Geocentric closest approach at 2025/07/20 05:31:22 UTC
J2000 position of star is 03:10:18.3 +24:55:18
Equinox of date position of star is 03:11:43.5 +25:00:42
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 6 degrees from the moon.
Moon is 26% illuminated.
Apparent brightness V=21.5
Object is 36.9 AU from the Sun
and 37.3 AU from the Earth.
Apparent velocity is 17.5
km/sec on the sky relative to the star, or,
2.3 arcsec/hr.
The 1-sigma error in the time of the event is 91 seconds.
The 1-sigma cross-track error in the shadow position is
1482 km.
The object has an absolute magnitude Hv=5.7
Diameter=413.1 km assuming a 5% albedo -- 24.5 sec chord
Diameter=168.6 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is 3:2E
Star training set for 575713, (2025/07/20 05:31UT) Object RA Dec mag sep mel Aldebaran 04:37:23.4 +16:33:31 0.8 21.68 16 44Zet Per 03:55:44.7 +31:57:27 2.8 11.88 9 52 Ari 03:06:57.0 +25:21:11 6.1 1.15 7 PPM 092237 03:10:21.5 +25:27:51 8.2 0.55 6 PPM 092255 03:11:38.2 +24:45:33 9.8 0.26 6 PPM 092244 03:10:56.2 +25:05:33 10.1 0.21 6 575713 03:11:48.7 +25:01:02 14.8 5 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 575713, (2025/07/20 05:31UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 21.68 16 44Zet Per 03:54:07.9 +31:53:01 2.8 11.88 9 52 Ari 03:05:26.7 +25:15:19 6.1 1.15 7 PPM 092237 03:08:51.0 +25:22:04 8.2 0.55 6 PPM 092255 03:10:08.0 +24:39:48 9.8 0.26 6 PPM 092244 03:09:25.9 +24:59:47 10.1 0.21 6 575713 03:10:18.3 +24:55:18 14.8 6 Positions are for J2000
Event circumstances last updated at 2024/01/29 04:25:42 UT
Marc W. Buie, Southwest Research Institute