Event between 15BM518 and star GA0780:04186134 with event index number of 1051777
Geocentric closest approach at 2021/02/05 21:34:15 UTC
J2000 position of star is 12:05:44.3 -10:13:51
Equinox of date position of star is 12:06:49.2 -10:20:53
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 58 degrees from the moon.
Moon is 37% illuminated.
TNO apparent brightness V=21.9
TNO is 35.1 AU from the Sun
and 34.4 AU from the Earth.
The TNO is moving 15.1
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 196 seconds.
The 1-sigma cross-track error in the shadow position is
1934 km.
The TNO has an absolute magnitude Hv=6.4
Diameter=313.3 km assuming a 5% albedo -- 20.7 sec chord
Diameter=127.9 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is 4:3E
Star training set for 15BM518, (2021/02/05 21:34UT) Object RA Dec mag sep mel Spica 13:26:18.5 -11:16:15 1.0 19.54 39 4Gam Crv 12:16:53.7 -17:39:32 2.6 7.71 54 PPM 225208 12:00:14.2 -10:35:36 6.4 1.64 59 PPM 225316 12:05:05.3 -10:24:49 6.8 0.43 58 PPM 225341 12:06:04.5 -10:11:09 9.0 0.25 58 15BM518 12:06:49.4 -10:20:54 16.2 57 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 15BM518, (2021/02/05 21:34UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.54 39 4Gam Crv 12:15:48.1 -17:32:30 2.6 7.71 54 PPM 225208 11:59:09.3 -10:28:33 6.4 1.64 59 PPM 225316 12:04:00.3 -10:17:46 6.8 0.43 58 PPM 225341 12:04:59.5 -10:04:06 9.0 0.25 58 15BM518 12:05:44.3 -10:13:51 16.2 58 Positions are for J2000
Event circumstances last updated at 2021/01/18 21:18:51 UT
Marc W. Buie, Southwest Research Institute