RECON: TNO occultation with 456826

Event between (456826) 07TH422 and star GA1060:01210913 with event index number of 214758

Geocentric closest approach at 2019/10/09 19:05:36 UTC

J2000 position of star is 05:43:57.3 +16:49:52
Equinox of date position of star is 05:45:04.9 +16:50:18
Stellar brightness G=16.2, use SENSEUP=128
Star is 114 degrees from the moon. Moon is 86% illuminated.
TNO apparent brightness V=22.6

TNO is 29.5 AU from the Sun and 29.2 AU from the Earth.
The TNO is moving 5.3 km/sec on the sky relative to the star, or, 0.9 arcsec/hr.
The 1-sigma error in the time of the event is 1553 seconds.
The 1-sigma cross-track error in the shadow position is 5764 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 33.1 sec chord
Diameter=70.9 km assuming a 30% albedo -- 13.5 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 456826, (2019/10/09 19:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:14.6 +07:24:33  0.4  9.81 115
Bellatrix      05:26:11.6 +06:21:58  1.6 11.45 107
126 Tau        05:42:26.3 +16:32:33  4.6  0.70 113
PPM 121346     05:46:01.6 +16:05:35  7.1  0.78 114
PPM 121327     05:44:51.9 +16:21:58  8.8  0.48 114
456826         05:45:06.1 +16:50:19 16.2       114
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 456826, (2019/10/09 19:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.81 115
Bellatrix      05:25:07.8 +06:20:58  1.6 11.45 107
126 Tau        05:41:17.7 +16:32:02  4.6  0.70 113
PPM 121346     05:44:53.2 +16:05:10  7.1  0.78 114
PPM 121327     05:43:43.3 +16:21:31  8.8  0.48 114
456826         05:43:57.3 +16:49:52 16.2       114
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:44:16 UT

Marc W. Buie, Southwest Research Institute

RECON