RECON: TNO occultation with 00WM183

Event between 00WM183 and star UC4-565-015633 with event index number of 96924

Geocentric closest approach at 2018/01/10 00:28:51 UTC

J2000 position of star is 05:16:33.8 +22:58:33
Equinox of date position of star is 05:17:36.9 +22:59:38
Stellar brightness R=14.3, use SENSEUP=64
Star is 132 degrees from the moon. Moon is 39% illuminated.
TNO apparent brightness V=24.2

TNO is 49.2 AU from the Sun and 48.3 AU from the Earth.
The TNO is moving 22.4 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 425 seconds.
The 1-sigma cross-track error in the shadow position is 5640 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=220.8 km assuming a 5% albedo -- 9.8 sec chord
Diameter=90.1 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 00WM183, (2018/01/10 00:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.4 +16:32:39  0.8 11.54 143
Alnath         05:27:26.0 +28:37:16  1.6  6.04 129
108 Tau        05:16:32.7 +22:18:14  6.2  0.74 132
PPM 094242     05:18:37.8 +22:50:51  9.6  0.27 132
PPM 094215     05:16:59.3 +23:11:46 11.2  0.25 132
00WM183        05:17:39.3 +22:59:40 14.3       132
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 00WM183, (2018/01/10 00:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 11.54 143
Alnath         05:26:17.5 +28:36:24  1.6  6.04 129
108 Tau        05:15:27.6 +22:17:05  6.2  0.74 132
PPM 094242     05:17:32.4 +22:49:45  9.6  0.27 132
PPM 094215     05:15:53.8 +23:10:37 11.2  0.25 132
00WM183        05:16:33.8 +22:58:33 14.3       132
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:33:58 UT

Marc W. Buie, Southwest Research Institute

RECON