RECON: TNO occultation with 13UX16

Event between 13UX16 and star UC4-483-001845 with event index number of 220232

Geocentric closest approach at 2018/06/22 09:04:21 UTC

J2000 position of star is 01:16:30.3 +06:35:36
Equinox of date position of star is 01:17:26.3 +06:41:15
Stellar brightness R=13.8, use SENSEUP=64
Star is 174 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=24.8

TNO is 45.5 AU from the Sun and 45.9 AU from the Earth.
The TNO is moving 13.8 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 363 seconds.
The 1-sigma cross-track error in the shadow position is 4611 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=145.2 km assuming a 5% albedo -- 10.5 sec chord
Diameter=59.3 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 13UX16, (2018/06/22 09:04UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:55:39.9 +20:53:51  2.6 16.95 163
80 Psc         01:09:19.4 +05:44:49  5.5  2.23 172
88 Psc         01:15:40.1 +07:05:33  7.2  0.60 174
PPM 144439     01:17:53.0 +06:54:32  9.6  0.24 174
13UX16         01:17:28.1 +06:41:25 13.8       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 13UX16, (2018/06/22 09:04UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:54:38.5 +20:48:27  2.6 16.95 163
80 Psc         01:08:21.9 +05:38:56  5.5  2.23 172
88 Psc         01:14:42.4 +06:59:42  7.2  0.60 174
PPM 144439     01:16:55.2 +06:48:43  9.6  0.24 174
13UX16         01:16:30.3 +06:35:36 13.8       174
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:46:56 UT

Marc W. Buie, Southwest Research Institute

RECON