RECON: TNO occultation with 10GX34

Event between 10GX34 and star GA0640:28889524 with event index number of 303490

Geocentric closest approach at 2019/07/01 19:27:58 UTC

J2000 position of star is 18:23:57.6 -24:04:38
Equinox of date position of star is 18:25:08.9 -24:03:57
Stellar brightness G=16.5, use SENSEUP=128
Star is 171 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=20.6

TNO is 16.6 AU from the Sun and 15.5 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 6.6 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is 1359 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, (2019/07/01 19:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.4 -26:28:25  0.9 25.96 162
Nunki          18:56:28.4 -26:16:15  2.0  7.42 163
PPM 268291     18:22:43.4 -24:54:17  6.0  1.00 171
PPM 268419     18:27:52.9 -23:25:22  8.4  0.90 170
PPM 268340     18:24:32.2 -24:00:29  9.1  0.15 171
10GX34         18:25:09.2 -24:03:57 16.5       170
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, (2019/07/01 19:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.96 162
Nunki          18:55:15.9 -26:17:49  2.0  7.42 163
PPM 268291     18:21:31.4 -24:54:54  6.0  1.00 171
PPM 268419     18:26:41.7 -23:26:08  8.4  0.90 170
PPM 268340     18:23:20.7 -24:01:10  9.1  0.15 171
10GX34         18:23:57.6 -24:04:38 16.5       171
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:21:41 UT

Marc W. Buie, Southwest Research Institute

RECON