RECON: TNO occultation with 03UV292

Event between 03UV292 and star UC4-540-017257 with event index number of 163789

Geocentric closest approach at 2018/12/04 22:03:10 UTC

J2000 position of star is 05:37:15.8 +17:53:28
Equinox of date position of star is 05:38:18.6 +17:54:03
Stellar brightness R=16.3, use SENSEUP=128
Star is 140 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=23.0

TNO is 37.1 AU from the Sun and 36.1 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 807 seconds.
The 1-sigma cross-track error in the shadow position is 3591 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=210.9 km assuming a 5% albedo -- 8.5 sec chord
Diameter=86.1 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 03UV292, (2018/12/04 22:03UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.8 +07:24:33  0.4 11.36 135
Alnath         05:27:29.4 +28:37:18  1.6 11.01 141
122 Tau        05:38:09.7 +17:03:01  5.7  0.85 140
PPM 121237     05:41:09.6 +17:41:08  8.4  0.70 139
PPM 121186     05:38:13.0 +17:20:37  9.3  0.56 140
03UV292        05:38:22.1 +17:54:05 16.3       140
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 03UV292, (2018/12/04 22:03UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 11.36 135
Alnath         05:26:17.5 +28:36:24  1.6 11.01 141
122 Tau        05:37:03.8 +17:02:24  5.7  0.85 140
PPM 121237     05:40:03.4 +17:40:36  8.4  0.70 139
PPM 121186     05:37:06.9 +17:20:00  9.3  0.56 140
03UV292        05:37:15.8 +17:53:28 16.3       140
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:05:39 UT

Marc W. Buie, Southwest Research Institute

RECON