Event between 15GY55 and star GA0740:05250168 with event index number of 2100431
Geocentric closest approach at 2023/05/20 17:41:18 UTC
J2000 position of star is 14:42:28.3 -14:12:20
Equinox of date position of star is 14:43:40.0 -14:17:51
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 150 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=22.8
TNO is 36.2 AU from the Sun
and 35.2 AU from the Earth.
The TNO is moving 22.0
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is
1545 km.
The TNO has an absolute magnitude Hv=7.2
Diameter=207.0 km assuming a 5% albedo -- 9.8 sec chord
Diameter=84.5 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is SCATNEAR
Star training set for 15GY55, (2023/05/20 17:41UT) Object RA Dec mag sep mel Spica 13:26:25.7 -11:16:57 1.0 19.09 132 27Bet Lib 15:18:16.1 -09:28:04 2.6 9.73 154 5 Lib 14:47:15.4 -15:33:24 6.5 1.51 151 PPM 229163 14:43:19.7 -13:57:10 8.2 0.37 150 PPM 229189 14:44:21.2 -14:22:27 9.5 0.16 150 15GY55 14:43:45.4 -14:18:15 14.7 150 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 15GY55, (2023/05/20 17:41UT) Object RA Dec mag sep mel Spica 13:25:11.5 -11:09:41 1.0 19.09 132 27Bet Lib 15:17:00.3 -09:22:59 2.6 9.73 154 5 Lib 14:45:57.7 -15:27:34 6.5 1.51 151 PPM 229163 14:42:02.8 -13:51:15 8.2 0.37 150 PPM 229189 14:43:04.1 -14:16:32 9.5 0.16 150 15GY55 14:42:28.3 -14:12:20 14.7 150 Positions are for J2000
Event circumstances last updated at 2021/10/07 00:43:09 UT
Marc W. Buie, Southwest Research Institute