Event between (471318) 11JF31 and star GA0720:05913199 with event index number of 2654041
Geocentric closest approach at 2025/01/25 21:20:19 UTC
J2000 position of star is 16:09:05.1 -17:58:08
Equinox of date position of star is 16:10:29.7 -18:01:55
Stellar brightness G=13.1,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 19 degrees from the moon.
Moon is 15% illuminated.
Apparent brightness V=21.9
Object is 43.1 AU from the Sun
and 43.6 AU from the Earth.
Apparent velocity is 18.5
km/sec on the sky relative to the star, or,
2.1 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is
1633 km.
The object has an absolute magnitude Hv=5.4
Diameter=496.6 km assuming a 5% albedo -- 27.6 sec chord
Diameter=202.7 km assuming a 30% albedo -- 11.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 471318, (2025/01/25 21:18UT) Object RA Dec mag sep mel Antares 16:30:56.9 -26:29:07 0.9 9.68 11 8Bet1Sco 16:06:53.9 -19:52:19 2.6 2.03 19 PPM 231413 16:16:06.3 -18:35:53 6.1 1.44 18 PPM 231254 16:09:34.0 -18:18:32 7.0 0.36 19 PPM 231285 16:10:43.6 -18:12:09 9.7 0.18 19 471318 16:10:31.9 -18:02:01 13.1 19 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 471318, (2025/01/25 21:18UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 9.68 11 8Bet1Sco 16:05:26.2 -19:48:20 2.6 2.03 19 PPM 231413 16:14:39.1 -18:32:11 6.1 1.44 18 PPM 231254 16:08:07.2 -18:14:38 7.0 0.36 19 PPM 231285 16:09:16.8 -18:08:17 9.7 0.18 19 471318 16:09:05.1 -17:58:08 13.1 19 Positions are for J2000
Event circumstances last updated at 2024/06/12 03:42:24 UT
Marc W. Buie, Southwest Research Institute