Event between 04HQ79 and star GA0660:06839883 with event index number of 1075767
Geocentric closest approach at 2021/05/01 03:57:22 UTC
J2000 position of star is 15:56:17.1 -23:09:54
Equinox of date position of star is 15:57:33.0 -23:13:32
Stellar brightness G=14.2,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 35 degrees from the moon.
Moon is 78% illuminated.
TNO apparent brightness V=23.9
TNO is 38.1 AU from the Sun
and 37.2 AU from the Earth.
The TNO is moving 21.8
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 610 seconds.
The 1-sigma cross-track error in the shadow position is
5165 km.
The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 6.6 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 04HQ79, (2021/05/01 03:57UT) Object RA Dec mag sep mel Antares 16:30:43.1 -26:28:39 0.9 8.19 27 7Del Sco 16:01:35.9 -22:40:51 2.3 1.08 34 PPM 264830 15:55:12.3 -24:02:24 5.4 0.98 36 PPM 264901 15:58:04.0 -23:14:41 8.1 0.12 35 04HQ79 15:57:33.2 -23:13:32 14.2 35 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 04HQ79, (2021/05/01 03:57UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 8.19 27 7Del Sco 16:00:20.0 -22:37:18 2.3 1.08 34 PPM 264830 15:53:55.9 -23:58:42 5.4 0.98 36 PPM 264901 15:56:47.9 -23:11:03 8.1 0.12 35 04HQ79 15:56:17.1 -23:09:54 14.2 35 Positions are for J2000
Event circumstances last updated at 2021/04/18 22:55:49 UT
Marc W. Buie, Southwest Research Institute