RECON: TNO occultation with 00WL183

Event between 00WL183 and star GA1120:01541337 with event index number of 1937297

Geocentric closest approach at 2021/11/10 18:08:21 UTC

J2000 position of star is 05:52:27.6 +22:57:21
Equinox of date position of star is 05:53:46.4 +22:57:34
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon. Moon is 42% illuminated.
TNO apparent brightness V=24.2

TNO is 46.1 AU from the Sun and 45.4 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 314 seconds.
The 1-sigma cross-track error in the shadow position is 1956 km.

The TNO has an absolute magnitude Hv=7.5
Diameter=187.9 km assuming a 5% albedo -- 9.9 sec chord
Diameter=76.7 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 00WL183, (2021/11/10 18:08UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.4 +07:24:34  0.4 15.56 135
Alnath         05:27:40.5 +28:37:26  1.6  8.16 134
PPM 095124     05:58:16.5 +24:15:04  5.8  1.65 140
PPM 095035     05:54:54.0 +24:17:24  8.1  1.35 140
PPM 094986     05:52:59.8 +22:55:06  9.3  0.19 139
00WL183        05:53:47.2 +22:57:35 15.1       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 00WL183, (2021/11/10 18:08UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.56 135
Alnath         05:26:17.6 +28:36:23  1.6  8.16 134
PPM 095124     05:56:56.1 +24:14:59  5.8  1.65 140
PPM 095035     05:53:33.6 +24:17:13  8.1  1.35 140
PPM 094986     05:51:40.2 +22:54:52  9.3  0.19 139
00WL183        05:52:27.6 +22:57:21 15.1       139
Positions are for J2000

Event circumstances last updated at 2021/08/25 04:10:55 UT

Marc W. Buie, Southwest Research Institute

RECON