RECON: TNO occultation with 15KH175

Event between 15KH175 and star GA0760:05539235 with event index number of 1012282

Geocentric closest approach at 2019/06/27 16:43:07 UTC

J2000 position of star is 16:06:09.9 -12:28:29
Equinox of date position of star is 16:07:13.5 -12:31:31
Stellar brightness G=11.8, use SENSEUP=8
Star is 150 degrees from the moon. Moon is 28% illuminated.
TNO apparent brightness V=24.9

TNO is 39.2 AU from the Sun and 38.4 AU from the Earth.
The TNO is moving 19.8 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 823 seconds.
The 1-sigma cross-track error in the shadow position is 4538 km.

The TNO has an absolute magnitude Hv=8.9
Diameter=100.0 km assuming a 5% albedo -- 5.0 sec chord
Diameter=40.8 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 15KH175, (2019/06/27 16:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 14.99 141
8Bet1Sco       16:06:34.4 -19:51:26  2.6  7.33 148
11 Sco         16:08:41.5 -12:47:47  6.1  0.44 149
PPM 231191     16:07:11.4 -12:21:21  8.5  0.17 150
PPM 231208     16:07:39.9 -12:32:30  8.8  0.10 150
15KH175        16:07:14.9 -12:31:34 11.8       149
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 15KH175, (2019/06/27 16:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.99 141
8Bet1Sco       16:05:26.2 -19:48:20  2.6  7.33 148
11 Sco         16:07:36.3 -12:44:44  6.1  0.44 149
PPM 231191     16:06:06.5 -12:18:16  8.5  0.17 150
PPM 231208     16:06:34.8 -12:29:25  8.8  0.10 150
15KH175        16:06:09.9 -12:28:29 11.8       150
Positions are for J2000

Event circumstances last updated at 2019/01/26 21:54:49 UT

Marc W. Buie, Southwest Research Institute

RECON