Event between (505447) 13SQ99 and star GA0980:00144510 with event index number of 2241589
Geocentric closest approach at 2027/08/05 14:01:41 UTC
J2000 position of star is 01:40:37.3 +08:45:43
Equinox of date position of star is 01:41:47.2 +08:52:23
Stellar brightness G=15.6,
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 14% illuminated.
TNO apparent brightness V=23.4
TNO is 47.9 AU from the Sun
and 47.6 AU from the Earth.
The TNO is moving 4.3
km/sec on the sky relative to the star, or,
0.4 arcsec/hr.
The 1-sigma error in the time of the event is 1182 seconds.
The 1-sigma cross-track error in the shadow position is
3096 km.
The TNO has an absolute magnitude Hv=6.5
Diameter=306.2 km assuming a 5% albedo -- 71.2 sec chord
Diameter=125.0 km assuming a 30% albedo -- 29.1 sec chord
Dynamical classification is CLASSICAL
Star training set for 505447, (2027/08/05 14:01UT) Object RA Dec mag sep mel Aldebaran 04:37:30.4 +16:33:46 0.8 43.37 107 6Bet Ari 01:56:10.2 +20:56:31 2.6 12.51 143 110Omi Psc 01:46:51.3 +09:17:44 4.3 1.24 149 PPM 144862 01:42:02.3 +08:53:58 6.6 0.01 150 505447 01:42:04.6 +08:54:03 15.6 150 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 505447, (2027/08/05 14:01UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 43.37 107 6Bet Ari 01:54:38.5 +20:48:26 2.6 12.51 143 110Omi Psc 01:45:23.7 +09:09:29 4.3 1.24 149 PPM 144862 01:40:35.0 +08:45:38 6.6 0.01 150 505447 01:40:37.3 +08:45:43 15.6 150 Positions are for J2000
Event circumstances last updated at 2022/01/28 00:00:46 UT
Marc W. Buie, Southwest Research Institute