Event between (583751) 16NZ90 and star GA0720:32991727 with event index number of 2525038
Geocentric closest approach at 2025/06/25 03:47:18 UTC
J2000 position of star is 20:24:25.4 -16:29:35
Equinox of date position of star is 20:25:39.5 -16:25:16
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=22.4
TNO is 34.6 AU from the Sun
and 33.8 AU from the Earth.
The TNO is moving 20.0
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 252 seconds.
The 1-sigma cross-track error in the shadow position is
3581 km.
The TNO has an absolute magnitude Hv=7.0
Diameter=244.4 km assuming a 5% albedo -- 12.2 sec chord
Diameter=99.8 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 2:1E
Star training set for 583751, (2025/06/25 03:47UT) Object RA Dec mag sep mel Fomalhaut 22:59:03.1 -29:29:11 1.2 37.40 116 Nunki 18:56:50.6 -26:15:46 2.0 22.90 168 PPM 237486 20:30:09.6 -15:39:20 6.5 1.28 143 PPM 237330 20:23:59.7 -16:26:18 8.1 0.45 145 PPM 237402 20:26:45.7 -16:16:59 9.2 0.25 145 583751 20:25:51.8 -16:24:33 15.9 144 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 583751, (2025/06/25 03:47UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 37.40 116 Nunki 18:55:15.9 -26:17:49 2.0 22.90 168 PPM 237486 20:28:43.6 -15:44:30 6.5 1.28 143 PPM 237330 20:22:33.2 -16:31:17 8.1 0.45 145 PPM 237402 20:25:19.3 -16:22:02 9.2 0.25 145 583751 20:24:25.4 -16:29:35 15.9 145 Positions are for J2000
Event circumstances last updated at 2021/11/10 00:16:18 UT
Marc W. Buie, Southwest Research Institute