RECON: TNO occultation with 10GX34

Event between 10GX34 and star UC4-325-119361 with event index number of 302742

Geocentric closest approach at 2018/10/14 09:24:23 UTC

J2000 position of star is 17:51:26.7 -25:00:07
Equinox of date position of star is 17:52:36.2 -25:00:20
Stellar brightness R=15.4, use SENSEUP=128
Star is 6 degrees from the moon. Moon is 28% illuminated.
TNO apparent brightness V=21.0

TNO is 16.6 AU from the Sun and 16.9 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 6.1 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 920 km.

The TNO has an absolute magnitude Hv=8.5
Diameter=120.8 km assuming a 5% albedo -- 5.8 sec chord
Diameter=49.3 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10GX34, (2018/10/14 09:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.7 -26:28:20  0.9 18.51  17
34Ups Sco      17:32:02.6 -37:18:32  2.7 13.06  17
PPM 267497     17:56:03.5 -24:53:21  6.4  0.79   6
PPM 267390     17:51:39.0 -24:51:26  7.8  0.26   5
PPM 267407     17:52:28.2 -25:04:29  9.4  0.08   6
10GX34         17:52:36.2 -25:00:20 15.4         6
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 10GX34, (2018/10/14 09:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.51  17
34Ups Sco      17:30:45.8 -37:17:46  2.7 13.06  17
PPM 267497     17:54:54.1 -24:53:13  6.4  0.79   6
PPM 267390     17:50:29.7 -24:51:11  7.8  0.26   5
PPM 267407     17:51:18.7 -25:04:16  9.4  0.08   6
10GX34         17:51:26.7 -25:00:07 15.4         6
Positions are for J2000

Event circumstances last updated at 2018/10/11 06:01:54 UT

Marc W. Buie, Southwest Research Institute

RECON