RECON: TNO occultation with 01RW143

Event between 01RW143 and star UC4-502-003206 with event index number of 103951

Geocentric closest approach at 2018/02/10 13:50:39 UTC

J2000 position of star is 02:13:19.8 +10:17:32
Equinox of date position of star is 02:14:15.5 +10:22:22
Stellar brightness R=16.4, use SENSEUP=128
Star is 131 degrees from the moon. Moon is 24% illuminated.
TNO apparent brightness V=23.6

TNO is 41.8 AU from the Sun and 42.1 AU from the Earth.
The TNO is moving 13.2 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 805 seconds.
The 1-sigma cross-track error in the shadow position is 5849 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=220.8 km assuming a 5% albedo -- 16.7 sec chord
Diameter=90.1 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 01RW143, (2018/02/10 13:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.7 +16:32:40  0.8 35.18 166
6Bet Ari       01:55:38.7 +20:53:45  2.6 11.43 129
65Xi 1Cet      02:13:57.7 +08:55:51  4.4  1.45 130
PPM 118030     02:13:28.1 +10:24:47  8.5  0.21 131
01RW143        02:14:17.9 +10:22:35 16.4       131
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 01RW143, (2018/02/10 13:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 35.18 166
6Bet Ari       01:54:38.5 +20:48:27  2.6 11.43 129
65Xi 1Cet      02:13:00.0 +08:50:48  4.4  1.45 130
PPM 118030     02:12:29.9 +10:19:43  8.5  0.21 131
01RW143        02:13:19.8 +10:17:32 16.4       131
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:34:04 UT

Marc W. Buie, Southwest Research Institute

RECON