Event between (499514) 10OO127 and star GA1020:19127536 with event index number of 2324815
Geocentric closest approach at 2021/11/01 15:57:39 UTC
J2000 position of star is 22:16:06.0 +13:27:52
Equinox of date position of star is 22:17:10.0 +13:34:25
Stellar brightness G=15.4,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 149 degrees from the moon.
Moon is 14% illuminated.
TNO apparent brightness V=21.3
TNO is 45.0 AU from the Sun
and 44.5 AU from the Earth.
The TNO is moving 15.7
km/sec on the sky relative to the star, or,
1.7 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is
1760 km.
The TNO has an absolute magnitude Hv=4.7
Diameter=673.0 km assuming a 5% albedo -- 43.3 sec chord
Diameter=274.8 km assuming a 30% albedo -- 17.7 sec chord
Dynamical classification is SCATNEAR
Star training set for 499514, (2021/11/01 15:57UT) Object RA Dec mag sep mel Deneb 20:42:10.6 +45:21:33 1.3 37.61 113 Markab 23:05:51.0 +15:19:23 2.5 11.91 156 31 Peg 22:22:35.6 +12:18:57 5.0 1.82 151 PPM 141276 22:18:20.7 +13:00:31 7.5 0.63 150 PPM 141269 22:18:08.5 +13:40:22 9.3 0.26 149 PPM 141248 22:16:58.3 +13:40:17 10.3 0.11 149 499514 22:17:10.1 +13:34:26 15.4 149 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 499514, (2021/11/01 15:57UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 37.61 113 Markab 23:04:45.8 +15:12:18 2.5 11.91 156 31 Peg 22:21:31.1 +12:12:19 5.0 1.82 151 PPM 141276 22:17:16.4 +12:53:56 7.5 0.63 150 PPM 141269 22:17:04.4 +13:33:48 9.3 0.26 149 PPM 141248 22:15:54.2 +13:33:44 10.3 0.11 149 499514 22:16:06.0 +13:27:52 15.4 149 Positions are for J2000
Event circumstances last updated at 2021/10/25 23:20:03 UT
Marc W. Buie, Southwest Research Institute