RECON: TNO occultation with 14WU509

Event between 14WU509 and star UC4-471-013070 with event index number of 173537

Geocentric closest approach at 2018/12/09 20:16:51 UTC

J2000 position of star is 05:43:42.6 +04:11:06
Equinox of date position of star is 05:44:39.5 +04:11:31
Stellar brightness R=14.4, use SENSEUP=128
Star is 153 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=21.9

TNO is 40.8 AU from the Sun and 39.9 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 1047 seconds.
The 1-sigma cross-track error in the shadow position is 3794 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=411.2 km assuming a 5% albedo -- 16.2 sec chord
Diameter=167.9 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 14WU509, (2018/12/09 20:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.9 +07:24:33  0.4  4.30 157
Bellatrix      05:26:08.9 +06:21:55  1.6  5.11 150
52 Ori         05:49:01.3 +06:27:34  5.5  2.51 155
PPM 149374     05:44:42.2 +04:00:41  7.9  0.18 153
14WU509        05:44:42.7 +04:11:32 14.4       153
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 14WU509, (2018/12/09 20:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.30 157
Bellatrix      05:25:07.8 +06:20:58  1.6  5.11 150
52 Ori         05:48:00.2 +06:27:15  5.5  2.51 155
PPM 149374     05:43:42.2 +04:00:15  7.9  0.18 153
14WU509        05:43:42.6 +04:11:06 14.4       153
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:06:09 UT

Marc W. Buie, Southwest Research Institute

RECON