RECON: TNO occultation with 10TV191

Event between 10TV191 and star UC4-515-007848 with event index number of 178752

Geocentric closest approach at 2019/01/24 12:21:52 UTC

J2000 position of star is 04:29:57.7 +12:48:23
Equinox of date position of star is 04:30:55.1 +12:50:33
Stellar brightness R=14.3, use SENSEUP=64
Star is 103 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=22.6

TNO is 28.0 AU from the Sun and 27.4 AU from the Earth.
The TNO is moving 12.2 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 680 seconds.
The 1-sigma cross-track error in the shadow position is 1183 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 12.4 sec chord
Diameter=61.8 km assuming a 30% albedo -- 5.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10TV191, (2019/01/24 12:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.0 +16:32:46  0.8  3.97 101
Bellatrix      05:26:09.3 +06:21:56  1.6 15.05  91
79 Tau         04:29:54.3 +13:05:18  5.3  0.36 103
PPM 120021     04:34:51.0 +13:17:26  7.0  1.03 102
PPM 119956     04:31:03.1 +13:11:45  9.3  0.35 103
PPM 119965     04:31:37.0 +12:34:32 11.1  0.31 103
10TV191        04:31:01.7 +12:50:48 14.3       103
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 10TV191, (2019/01/24 12:22UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  3.97 101
Bellatrix      05:25:07.8 +06:20:59  1.6 15.05  91
79 Tau         04:28:50.3 +13:02:51  5.3  0.36 103
PPM 120021     04:33:46.7 +13:15:07  7.0  1.03 102
PPM 119956     04:29:59.0 +13:09:20  9.3  0.35 103
PPM 119965     04:30:33.1 +12:32:08 11.1  0.31 103
10TV191        04:29:57.7 +12:48:23 14.3       103
Positions are for J2000

Event circumstances last updated at 2017/02/01 18:25:44 UT

Marc W. Buie, Southwest Research Institute

RECON