Event between 15BQ518 and star GA0800:04010816 with event index number of 1155494
Geocentric closest approach at 2021/06/29 03:00:24 UTC
J2000 position of star is 10:41:02.7 -08:18:21
Equinox of date position of star is 10:42:06.1 -08:24:59
Stellar brightness G=12.2,
use SENSEUP=16 with the MallinCam and and exposure
time of 250 milli-seconds with the QHY174 camera.
Star is 157 degrees from the moon.
Moon is 77% illuminated.
TNO apparent brightness V=22.4
TNO is 42.7 AU from the Sun
and 43.0 AU from the Earth.
The TNO is moving 17.0
km/sec on the sky relative to the star, or,
2.0 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is
2207 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=396.3 km assuming a 5% albedo -- 23.4 sec chord
Diameter=161.8 km assuming a 30% albedo -- 9.5 sec chord
Dynamical classification is SCATEXTD
Star training set for 15BQ518, (2021/06/29 03:00UT) Object RA Dec mag sep mel Regulus 10:09:30.9 +11:51:41 1.3 21.84 173 Alphard 09:28:38.6 -08:45:10 2.0 18.17 151 PPM 193503 10:32:03.3 -07:44:54 6.2 2.58 158 PPM 193690 10:42:57.1 -08:10:09 7.4 0.32 157 PPM 193676 10:41:51.0 -08:35:09 9.5 0.18 157 15BQ518 10:42:07.4 -08:25:07 12.2 157 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 15BQ518, (2021/06/29 03:00UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 21.84 173 Alphard 09:27:35.2 -08:39:30 2.0 18.17 151 PPM 193503 10:30:58.7 -07:38:15 6.2 2.58 158 PPM 193690 10:41:52.4 -08:03:22 7.4 0.32 157 PPM 193676 10:40:46.4 -08:28:23 9.5 0.18 157 15BQ518 10:41:02.7 -08:18:21 12.2 157 Positions are for J2000
Event circumstances last updated at 2021/01/23 20:06:47 UT
Marc W. Buie, Southwest Research Institute