RECON: TNO occultation with 10TN182

Event between 10TN182 and star GA1060:00231560 with event index number of 274698

Geocentric closest approach at 2020/06/30 13:52:23 UTC

J2000 position of star is 02:20:19.7 +16:18:27
Equinox of date position of star is 02:21:27.2 +16:24:02
Stellar brightness G=14.8, use SENSEUP=128
Star is 174 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=26.0

TNO is 38.5 AU from the Sun and 39.0 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 429 seconds.
The 1-sigma cross-track error in the shadow position is 5589 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=248.9 km assuming a 5% albedo -- 3.2 sec chord
Diameter=101.6 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 10TN182, (2020/06/30 13:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:06.0 +16:32:56  0.8 32.48 149
6Bet Ari       01:55:46.6 +20:54:27  2.6  7.57 167
19 Ari         02:14:10.6 +15:22:30  5.7  2.03 174
PPM 118153     02:22:58.1 +16:15:19  8.4  0.39 174
PPM 118131     02:21:04.6 +16:19:45 10.0  0.12 174
10TN182        02:21:27.3 +16:24:03 14.8       174
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 10TN182, (2020/06/30 13:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 32.48 149
6Bet Ari       01:54:38.5 +20:48:27  2.6  7.57 167
19 Ari         02:13:03.4 +15:16:47  5.7  2.03 174
PPM 118153     02:21:50.4 +16:09:45  8.4  0.39 174
PPM 118131     02:19:57.0 +16:14:09 10.0  0.12 174
10TN182        02:20:19.7 +16:18:27 14.8       174
Positions are for J2000

Event circumstances last updated at 2020/06/21 04:20:42 UT

Marc W. Buie, Southwest Research Institute

RECON