Event between (469610) 04HF79 and star GA0660:10256681 with event index number of 2255691
Geocentric closest approach at 2028/06/16 21:20:15 UTC
J2000 position of star is 17:11:47.6 -23:02:32
Equinox of date position of star is 17:13:07.9 -23:04:04
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon.
Moon is 34% illuminated.
TNO apparent brightness V=22.6
TNO is 42.1 AU from the Sun
and 41.1 AU from the Earth.
The TNO is moving 24.5
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1222 seconds.
The 1-sigma cross-track error in the shadow position is
4306 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=310.5 km assuming a 5% albedo -- 12.7 sec chord
Diameter=126.7 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 469610, (2028/06/16 21:20UT) Object RA Dec mag sep mel Antares 16:31:09.4 -26:29:33 0.9 10.20 126 35Eta Oph 17:12:00.7 -15:45:29 2.6 7.33 116 PPM 266403 17:07:54.0 -21:36:05 6.3 1.96 117 PPM 266547 17:14:06.7 -22:57:27 8.2 0.18 116 PPM 266544 17:13:58.8 -23:11:41 9.3 0.16 116 469610 17:13:31.0 -23:04:29 16.8 116 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 469610, (2028/06/16 21:20UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 10.20 126 35Eta Oph 17:10:22.7 -15:43:29 2.6 7.33 116 PPM 266403 17:06:11.8 -21:33:54 6.3 1.96 117 PPM 266547 17:12:23.4 -22:55:31 8.2 0.18 116 PPM 266544 17:12:15.3 -23:09:45 9.3 0.16 116 469610 17:11:47.6 -23:02:32 16.8 116 Positions are for J2000
Event circumstances last updated at 2022/02/14 02:05:05 UT
Marc W. Buie, Southwest Research Institute