RECON: TNO occultation with 00WT169

Event between 00WT169 and star GA1120:01867679 with event index number of 1022104

Geocentric closest approach at 2020/12/08 22:50:53 UTC

J2000 position of star is 06:10:36.4 +22:51:16
Equinox of date position of star is 06:11:52.5 +22:50:55
Stellar brightness G=15.6, use SENSEUP=128
Star is 87 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=22.6

TNO is 45.1 AU from the Sun and 44.1 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 306 seconds.
The 1-sigma cross-track error in the shadow position is 2006 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=361.4 km assuming a 5% albedo -- 14.6 sec chord
Diameter=147.5 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 00WT169, (2020/12/08 22:51UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.4 +07:24:33  0.4 15.89  92
Alhena         06:38:55.3 +16:22:47  1.9  9.07  81
3 Gem          06:11:00.3 +23:06:29  5.5  0.33  87
6 Gem          06:13:35.3 +22:54:07  8.4  0.40  87
3 Gem          06:11:00.3 +23:06:29  5.5  0.33  87
PPM 095558     06:12:14.8 +22:48:42 11.0  0.09  87
00WT169        06:11:52.5 +22:50:55 15.6        87
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 00WT169, (2020/12/08 22:51UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.89  92
Alhena         06:37:42.8 +16:23:57  1.9  9.07  81
3 Gem          06:09:44.0 +23:06:48  5.5  0.33  87
6 Gem          06:12:19.1 +22:54:30  8.4  0.40  87
3 Gem          06:09:44.0 +23:06:48  5.5  0.33  87
PPM 095558     06:10:58.7 +22:49:04 11.0  0.09  87
00WT169        06:10:36.4 +22:51:16 15.6        87
Positions are for J2000

Event circumstances last updated at 2020/12/02 11:32:39 UT

Marc W. Buie, Southwest Research Institute

RECON