RECON: TNO occultation with 134340

Event between (134340) Pluto and star GA0660:38216480 with event index number of 1100893

Geocentric closest approach at 2021/06/14 01:26:41 UTC

J2000 position of star is 19:53:16.8 -22:25:42
Equinox of date position of star is 19:54:32.6 -22:22:19
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 172 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=15.0

TNO is 34.3 AU from the Sun and 33.4 AU from the Earth.
The TNO is moving 19.5 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 64 seconds.
The 1-sigma cross-track error in the shadow position is 1217 km.

The TNO has an absolute magnitude Hv=-0.4
Diameter=7413.4 km assuming a 5% albedo -- 379.4 sec chord
Diameter=3026.5 km assuming a 30% albedo -- 154.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 134340, (2021/06/14 01:27UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:49.9 -29:30:29  1.2 41.77 146
38Zet Sgr      19:03:58.5 -29:50:51  2.7 13.58 160
PPM 270417     19:55:34.7 -23:53:10  6.1  1.53 172
PPM 270331     19:51:32.9 -22:43:28  8.2  0.78 171
PPM 270390     19:54:08.5 -22:15:53  9.4  0.14 172
134340         19:54:33.1 -22:22:17 16.9       172
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 134340, (2021/06/14 01:27UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 41.77 146
38Zet Sgr      19:02:36.7 -29:52:49  2.7 13.58 160
PPM 270417     19:54:17.6 -23:56:36  6.1  1.53 172
PPM 270331     19:50:16.3 -22:46:48  8.2  0.78 171
PPM 270390     19:52:52.2 -22:19:18  9.4  0.14 172
134340         19:53:16.8 -22:25:42 16.9       172
Positions are for J2000

Event circumstances last updated at 2021/04/21 22:32:43 UT

Marc W. Buie, Southwest Research Institute

RECON