Event between (500885) 13JL65 and star GA0740:06782678 with event index number of 1169683
Geocentric closest approach at 2021/07/04 15:19:16 UTC
J2000 position of star is 17:04:57.9 -15:53:21
Equinox of date position of star is 17:06:10.3 -15:55:00
Stellar brightness G=15.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 146 degrees from the moon.
Moon is 25% illuminated.
TNO apparent brightness V=24.7
TNO is 36.6 AU from the Sun
and 35.7 AU from the Earth.
The TNO is moving 21.5
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1507 seconds.
The 1-sigma cross-track error in the shadow position is
4862 km.
The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 4.5 sec chord
Diameter=39.0 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is 3:2E
Star training set for 500885, (2021/07/04 15:19UT) Object RA Dec mag sep mel Antares 16:30:43.8 -26:28:40 0.9 13.40 153 35Eta Oph 17:11:36.8 -15:45:00 2.6 1.31 145 PPM 232651 17:09:29.9 -17:38:09 6.0 1.89 146 PPM 232639 17:09:00.0 -16:07:11 6.9 0.70 146 PPM 232578 17:06:04.9 -15:57:41 9.3 0.05 146 500885 17:06:12.0 -15:55:03 15.7 146 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 500885, (2021/07/04 15:19UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 13.40 153 35Eta Oph 17:10:22.7 -15:43:29 2.6 1.31 145 PPM 232651 17:08:14.9 -17:36:33 6.0 1.89 146 PPM 232639 17:07:45.8 -16:05:35 6.9 0.70 146 PPM 232578 17:04:50.8 -15:56:00 9.3 0.05 146 500885 17:04:57.9 -15:53:21 15.7 146 Positions are for J2000
Event circumstances last updated at 2021/01/04 00:10:23 UT
Marc W. Buie, Southwest Research Institute