Event between (495603) 15AM281 and star GA1220:03482425 with event index number of 2439265
Geocentric closest approach at 2022/06/16 16:59:23 UTC
J2000 position of star is 10:25:34.3 +33:53:09
Equinox of date position of star is 10:26:50.8 +33:46:19
Stellar brightness G=16.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 148 degrees from the moon.
Moon is 93% illuminated.
TNO apparent brightness V=21.4
TNO is 43.1 AU from the Sun
and 43.5 AU from the Earth.
The TNO is moving 22.1
km/sec on the sky relative to the star, or,
2.5 arcsec/hr.
The 1-sigma error in the time of the event is 80 seconds.
The 1-sigma cross-track error in the shadow position is
1811 km.
The TNO has an absolute magnitude Hv=4.9
Diameter=613.8 km assuming a 5% albedo -- 28.4 sec chord
Diameter=250.6 km assuming a 30% albedo -- 11.6 sec chord
Dynamical classification is 5:2EEE+5:2EII
Star training set for 495603, (2022/06/16 16:59UT) Object RA Dec mag sep mel Regulus 10:09:34.0 +11:51:24 1.3 22.27 147 68Del Leo 11:15:18.0 +20:24:01 2.6 17.15 135 30 LMi 10:27:11.7 +33:40:50 5.1 0.11 147 28 LMi 10:25:25.7 +33:36:15 6.8 0.34 148 30 LMi 10:27:11.7 +33:40:50 5.1 0.11 147 495603 10:26:51.4 +33:46:16 16.7 147 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 495603, (2022/06/16 16:59UT) Object RA Dec mag sep mel Regulus 10:08:21.9 +11:58:02 1.3 22.27 147 68Del Leo 11:14:06.7 +20:31:23 2.6 17.15 135 30 LMi 10:25:54.7 +33:47:43 5.1 0.11 147 28 LMi 10:24:08.6 +33:43:07 6.8 0.34 148 30 LMi 10:25:54.7 +33:47:43 5.1 0.11 147 495603 10:25:34.3 +33:53:09 16.7 147 Positions are for J2000
Event circumstances last updated at 2022/04/17 00:15:34 UT
Marc W. Buie, Southwest Research Institute