Event between (523773) 14XS40 and star GA0840:03823768 with event index number of 2356810
Geocentric closest approach at 2026/02/23 16:40:20 UTC
J2000 position of star is 09:39:30.1 -05:08:17
Equinox of date position of star is 09:40:43.2 -05:14:57
Stellar brightness G=17.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 96 degrees from the moon.
Moon is 41% illuminated.
Apparent brightness V=21.1
Object is 37.8 AU from the Sun
and 36.9 AU from the Earth.
Apparent velocity is 25.4
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 65 seconds.
The 1-sigma cross-track error in the shadow position is
1451 km.
The object has an absolute magnitude Hv=5.3
Diameter=517.6 km assuming a 5% albedo -- 20.8 sec chord
Diameter=211.3 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 523773, (2026/02/23 16:42UT) Object RA Dec mag sep mel Regulus 10:09:45.8 +11:50:18 1.3 18.55 96 Alphard 09:28:52.3 -08:46:24 2.0 4.60 95 33 Hya 09:35:50.9 -06:01:58 5.6 1.46 95 PPM 192590 09:39:30.6 -05:17:08 8.0 0.33 96 523773 09:40:48.7 -05:15:27 17.0 96 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 523773, (2026/02/23 16:42UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 18.55 96 Alphard 09:27:35.2 -08:39:30 2.0 4.60 95 33 Hya 09:34:32.7 -05:54:55 5.6 1.46 95 PPM 192590 09:38:12.0 -05:10:00 8.0 0.33 96 523773 09:39:30.1 -05:08:17 17.0 96 Positions are for J2000
Event circumstances last updated at 2024/04/23 03:23:20 UT
Marc W. Buie, Southwest Research Institute