Event between (307982) 04PG115 and star GA0960:17263134 with event index number of 1124450
Geocentric closest approach at 2021/07/02 13:40:15 UTC
J2000 position of star is 22:37:58.3 +07:52:39
Equinox of date position of star is 22:39:01.4 +07:59:14
Stellar brightness G=11.4,
use SENSEUP=8 with the MallinCam and and exposure
time of 125 milli-seconds with the QHY174 camera.
Star is 39 degrees from the moon.
Moon is 43% illuminated.
TNO apparent brightness V=21.1
TNO is 39.2 AU from the Sun
and 38.7 AU from the Earth.
The TNO is moving 9.6
km/sec on the sky relative to the star, or,
1.2 arcsec/hr.
The 1-sigma error in the time of the event is 146 seconds.
The 1-sigma cross-track error in the shadow position is
1404 km.
The TNO has an absolute magnitude Hv=5.0
Diameter=605.4 km assuming a 5% albedo -- 63.0 sec chord
Diameter=247.1 km assuming a 30% albedo -- 25.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 307982, (2021/07/02 13:40UT) Object RA Dec mag sep mel Markab 23:05:50.0 +15:19:17 2.5 9.83 34 42Zet Peg 22:42:32.1 +10:56:39 3.4 3.08 39 PPM 173237 22:37:58.8 +07:53:38 7.7 0.28 40 PPM 173256 22:38:58.9 +08:06:24 10.8 0.12 39 307982 22:39:03.0 +07:59:23 11.4 39 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 307982, (2021/07/02 13:40UT) Object RA Dec mag sep mel Markab 23:04:45.8 +15:12:18 2.5 9.83 34 42Zet Peg 22:41:27.8 +10:49:53 3.4 3.08 39 PPM 173237 22:36:54.1 +07:46:55 7.7 0.28 40 PPM 173256 22:37:54.2 +07:59:40 10.8 0.12 39 307982 22:37:58.3 +07:52:39 11.4 39 Positions are for J2000
Event circumstances last updated at 2020/12/25 01:25:08 UT
Marc W. Buie, Southwest Research Institute