RECON: TNO occultation with 10WG9

Event between 10WG9 and star GA1140:02082282 with event index number of 1002378

Geocentric closest approach at 2020/11/13 21:22:06 UTC

J2000 position of star is 06:17:53.7 +24:44:31
Equinox of date position of star is 06:19:05.4 +24:44:00
Stellar brightness G=16.3, use SENSEUP=128
Star is 119 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=22.3

TNO is 25.0 AU from the Sun and 24.2 AU from the Earth.
The TNO is moving 21.4 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 80 seconds.
The 1-sigma cross-track error in the shadow position is 3434 km.

The TNO has an absolute magnitude Hv=8.2
Diameter=134.9 km assuming a 5% albedo -- 6.3 sec chord
Diameter=55.1 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10WG9, (2020/11/13 21:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.1 +07:24:33  0.4 18.17 124
Alhena         06:38:55.0 +16:22:47  1.9  9.54 114
9 Gem          06:18:15.1 +23:43:55  6.1  1.02 119
PPM 095790     06:21:21.8 +24:33:23  8.5  0.53 118
PPM 095783     06:21:08.9 +25:00:10  8.8  0.52 118
PPM 095709     06:18:30.5 +24:38:07 10.3  0.18 119
10WG9          06:19:10.7 +24:43:57 16.3       119
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 10WG9, (2020/11/13 21:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.17 124
Alhena         06:37:42.8 +16:23:57  1.9  9.54 114
9 Gem          06:16:58.7 +23:44:27  6.1  1.02 119
PPM 095790     06:20:04.9 +24:34:00  8.5  0.53 118
PPM 095783     06:19:51.8 +25:00:48  8.8  0.52 118
PPM 095709     06:17:13.6 +24:38:40 10.3  0.18 119
10WG9          06:17:53.7 +24:44:31 16.3       119
Positions are for J2000

Event circumstances last updated at 2019/06/08 00:37:44 UT

Marc W. Buie, Southwest Research Institute

RECON