RECON: TNO occultation with 10TL182

Event between 10TL182 and star GA1000:00190530 with event index number of 1158785

Geocentric closest approach at 2021/07/04 12:32:55 UTC

J2000 position of star is 02:10:19.0 +11:28:04
Equinox of date position of star is 02:11:27.6 +11:34:02
Stellar brightness G=13.7, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 8 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=22.8

TNO is 41.3 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 15.7 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is 2118 km.

The TNO has an absolute magnitude Hv=6.5
Diameter=300.6 km assuming a 5% albedo -- 19.1 sec chord
Diameter=122.7 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 10TL182, (2021/07/04 12:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:09.4 +16:33:03  0.8 35.63  28
6Bet Ari       01:55:50.0 +20:54:44  2.6 10.07  14
65Xi 1Cet      02:14:08.6 +08:56:48  4.4  2.70   8
PPM 118053     02:15:22.2 +12:23:00  8.2  1.25   7
PPM 118019     02:12:56.7 +11:51:39  9.9  0.46   7
PPM 118018     02:12:51.8 +11:24:49 11.5  0.37   7
10TL182        02:11:28.3 +11:34:06 13.7         7
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 10TL182, (2021/07/04 12:33UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 35.63  28
6Bet Ari       01:54:38.5 +20:48:26  2.6 10.07  14
65Xi 1Cet      02:13:00.0 +08:50:48  4.4  2.70   8
PPM 118053     02:14:12.6 +12:17:02  8.2  1.25   7
PPM 118019     02:11:47.3 +11:45:38  9.9  0.46   7
PPM 118018     02:11:42.5 +11:18:48 11.5  0.37   7
10TL182        02:10:19.0 +11:28:04 13.7         8
Positions are for J2000

Event circumstances last updated at 2021/04/08 23:41:22 UT

Marc W. Buie, Southwest Research Institute

RECON