RECON: TNO occultation with 10GX34

Event between 10GX34 and star GA0660:35193052 with event index number of 304593

Geocentric closest approach at 2020/07/19 23:43:26 UTC

J2000 position of star is 18:48:57.6 -22:17:02
Equinox of date position of star is 18:50:11.5 -22:15:34
Stellar brightness G=16.4, use SENSEUP=128
Star is 173 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.2

TNO is 16.6 AU from the Sun and 15.6 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 6.2 arcsec/hr.
The 1-sigma error in the time of the event is 333 seconds.
The 1-sigma cross-track error in the shadow position is 1979 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=120.8 km assuming a 5% albedo -- 3.1 sec chord
Diameter=49.3 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10GX34, (2020/07/19 23:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.2 -26:28:33  0.9 31.96 141
Nunki          18:56:32.3 -26:16:10  2.0  4.26 174
30 Sgr         18:52:04.6 -22:08:13  6.3  0.45 173
PPM 268962     18:51:54.3 -22:14:28  8.2  0.40 173
PPM 268926     18:49:28.8 -22:23:07  8.7  0.21 172
10GX34         18:50:11.8 -22:15:34 16.4       173
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, (2020/07/19 23:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.96 141
Nunki          18:55:15.9 -26:17:49  2.0  4.26 174
30 Sgr         18:50:50.5 -22:09:45  6.3  0.45 173
PPM 268962     18:50:40.1 -22:15:59  8.2  0.40 173
PPM 268926     18:48:14.5 -22:24:35  8.7  0.21 172
10GX34         18:48:57.6 -22:17:02 16.4       173
Positions are for J2000

Event circumstances last updated at 2020/06/21 05:17:11 UT

Marc W. Buie, Southwest Research Institute

RECON