RECON: TNO occultation with 10GX34

Event between 10GX34 and star GA0640:27263288 with event index number of 303605

Geocentric closest approach at 2019/07/23 20:18:28 UTC

J2000 position of star is 18:19:56.6 -24:01:34
Equinox of date position of star is 18:21:07.9 -24:00:59
Stellar brightness G=12.3, use SENSEUP=16
Star is 102 degrees from the moon. Moon is 62% illuminated.
TNO apparent brightness V=20.7

TNO is 16.6 AU from the Sun and 15.6 AU from the Earth.
The TNO is moving 17.8 km/sec on the sky relative to the star, or, 5.7 arcsec/hr.
The 1-sigma error in the time of the event is 268 seconds.
The 1-sigma cross-track error in the shadow position is 1233 km.

The TNO has an absolute magnitude Hv=8.5
Diameter=120.8 km assuming a 5% albedo -- 6.8 sec chord
Diameter=49.3 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10GX34, (2019/07/23 20:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.6 -26:28:26  0.9 25.07 126
Nunki          18:56:28.6 -26:16:15  2.0  8.31  94
PPM 268291     18:22:43.6 -24:54:17  6.0  0.96 102
PPM 268251     18:21:06.3 -23:18:20  7.9  0.71 102
PPM 268272     18:22:03.6 -23:55:58  9.2  0.23 102
10GX34         18:21:08.4 -24:00:59 12.3       102
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, (2019/07/23 20:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.07 126
Nunki          18:55:15.9 -26:17:49  2.0  8.31  94
PPM 268291     18:21:31.4 -24:54:54  6.0  0.96 102
PPM 268251     18:19:54.9 -23:18:55  7.9  0.71 102
PPM 268272     18:20:51.9 -23:56:35  9.2  0.23 102
10GX34         18:19:56.6 -24:01:34 12.3       102
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:27:31 UT

Marc W. Buie, Southwest Research Institute

RECON