Event between (508869) 02VT130 and star GA1140:01355465 with event index number of 1126109
Geocentric closest approach at 2021/09/09 23:44:29 UTC
J2000 position of star is 05:38:44.4 +24:26:38
Equinox of date position of star is 05:40:04.1 +24:27:17
Stellar brightness G=16.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 121 degrees from the moon.
Moon is 11% illuminated.
TNO apparent brightness V=22.2
TNO is 43.2 AU from the Sun
and 43.3 AU from the Earth.
The TNO is moving 8.1
km/sec on the sky relative to the star, or,
0.9 arcsec/hr.
The 1-sigma error in the time of the event is 524 seconds.
The 1-sigma cross-track error in the shadow position is
1880 km.
The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 53.6 sec chord
Diameter=178.2 km assuming a 30% albedo -- 21.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 508869, (2021/09/09 23:44UT) Object RA Dec mag sep mel Aldebaran 04:37:10.1 +16:33:04 0.8 16.70 137 Alnath 05:27:39.9 +28:37:25 1.6 5.01 123 PPM 094690 05:43:14.0 +23:20:07 6.5 1.33 120 PPM 094629 05:41:11.2 +24:14:09 7.4 0.34 121 PPM 094595 05:39:27.2 +24:19:33 9.2 0.19 121 PPM 094607 05:40:07.4 +24:18:14 10.5 0.15 121 508869 05:40:04.2 +24:27:17 16.9 121 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 508869, (2021/09/09 23:44UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 16.70 137 Alnath 05:26:17.5 +28:36:23 1.6 5.01 123 PPM 094690 05:41:54.8 +23:19:34 6.5 1.33 120 PPM 094629 05:39:51.5 +24:13:32 7.4 0.34 121 PPM 094595 05:38:07.4 +24:18:53 9.2 0.19 121 PPM 094607 05:38:47.7 +24:17:35 10.5 0.15 121 508869 05:38:44.4 +24:26:38 16.9 121 Positions are for J2000
Event circumstances last updated at 2021/08/29 01:39:14 UT
Marc W. Buie, Southwest Research Institute