RECON: TNO occultation with 12VB116

Event between 12VB116 and star GA0900:00934598 with event index number of 1572403

Geocentric closest approach at 2020/11/01 14:34:57 UTC

J2000 position of star is 05:58:47.9 +00:36:25
Equinox of date position of star is 05:59:51.1 +00:36:27
Stellar brightness G=16.3, use SENSEUP=128
Star is 43 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=26.9

TNO is 47.5 AU from the Sun and 47.0 AU from the Earth.
The TNO is moving 17.9 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 148 seconds.
The 1-sigma cross-track error in the shadow position is 2008 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=567.6 km assuming a 5% albedo -- 3.4 sec chord
Diameter=231.7 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 12VB116, (2020/11/01 14:35UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.0 +07:24:33  0.4  6.86  40
34Del Ori      05:33:04.3 -00:17:07  2.2  6.76  37
60 Ori         05:59:53.9 +00:33:12  5.2  0.05  43
PPM 149734     06:00:55.7 +00:03:20  8.2  0.61  44
60 Ori         05:59:53.9 +00:33:12  5.2  0.05  43
12VB116        05:59:52.3 +00:36:27 16.3        43
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 12VB116, (2020/11/01 14:35UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.86  40
34Del Ori      05:32:00.4 -00:17:57  2.2  6.76  37
60 Ori         05:58:49.6 +00:33:11  5.2  0.05  43
PPM 149734     05:59:51.6 +00:03:21  8.2  0.61  44
60 Ori         05:58:49.6 +00:33:11  5.2  0.05  43
12VB116        05:58:47.9 +00:36:25 16.3        43
Positions are for J2000

Event circumstances last updated at 2020/06/21 22:28:49 UT

Marc W. Buie, Southwest Research Institute

RECON