RECON: TNO occultation with 03UV292

Event between 03UV292 and star GA1060:01459321 with event index number of 1073616

Geocentric closest approach at 2021/12/09 19:42:22 UTC

J2000 position of star is 05:56:50.7 +17:12:14
Equinox of date position of star is 05:58:07.3 +17:12:19
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=23.1

TNO is 37.8 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 24.9 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 177 seconds.
The 1-sigma cross-track error in the shadow position is 1491 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, (2021/12/09 19:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.6 +07:24:34  0.4  9.81 113
Alhena         06:38:58.7 +16:22:43  1.9  9.81 125
57 Ori         05:56:14.6 +19:45:07  5.6  2.59 116
PPM 121583     05:56:15.1 +17:24:15  8.3  0.49 115
PPM 121640     05:58:24.0 +17:00:43  8.8  0.20 116
PPM 121646     05:58:31.2 +17:09:07 10.5  0.11 116
03UV292        05:58:07.3 +17:12:19 16.6       116
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, (2021/12/09 19:42UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.81 113
Alhena         06:37:42.8 +16:23:57  1.9  9.81 125
57 Ori         05:54:56.6 +19:44:58  5.6  2.59 116
PPM 121583     05:54:58.5 +17:24:07  8.3  0.49 115
PPM 121640     05:57:07.6 +17:00:39  8.8  0.20 116
PPM 121646     05:57:14.7 +17:09:03 10.5  0.11 116
03UV292        05:56:50.7 +17:12:14 16.6       116
Positions are for J2000

Event circumstances last updated at 2021/12/08 01:42:01 UT

Marc W. Buie, Southwest Research Institute

RECON