RECON: TNO occultation with 02VF131

Event between 02VF131 and star GA1100:01876735 with event index number of 1039282

Geocentric closest approach at 2021/02/03 14:36:07 UTC

J2000 position of star is 06:16:24.8 +21:45:15
Equinox of date position of star is 06:17:40.5 +21:44:44
Stellar brightness G=16.8, 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 63% illuminated.
TNO apparent brightness V=23.2

TNO is 43.5 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 18.5 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 412 seconds.
The 1-sigma cross-track error in the shadow position is 2872 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=279.3 km assuming a 5% albedo -- 15.1 sec chord
Diameter=114.0 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 02VF131, (2021/02/03 14:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.9 +07:24:33  0.4 15.23 121
Alhena         06:38:55.8 +16:22:46  1.9  7.35 111
7Eta Gem       06:16:09.1 +22:29:55  4.5  0.83 117
PPM 095712     06:18:36.6 +22:08:05  8.5  0.44 116
PPM 095684     06:17:24.0 +21:41:22  9.8  0.09 117
02VF131        06:17:40.9 +21:44:44 16.8       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 02VF131, (2021/02/03 14:36UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.23 121
Alhena         06:37:42.8 +16:23:57  1.9  7.35 111
7Eta Gem       06:14:52.6 +22:30:24  4.5  0.83 117
PPM 095712     06:17:20.4 +22:08:38  8.5  0.44 116
PPM 095684     06:16:08.0 +21:41:53  9.8  0.09 117
02VF131        06:16:24.8 +21:45:15 16.8       116
Positions are for J2000

Event circumstances last updated at 2021/01/01 22:42:40 UT

Marc W. Buie, Southwest Research Institute

RECON