RECON: TNO occultation with 134340

Event between (134340) Pluto and star UC4-341-191461 with event index number of 190936

Geocentric closest approach at 2019/06/06 06:38:45 UTC

J2000 position of star is 19:37:19.2 -21:55:02
Equinox of date position of star is 19:38:21.9 -21:52:36
Stellar brightness R=15.4, use SENSEUP=128
Star is 180 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=14.6

TNO is 33.8 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 18.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 67 seconds.
The 1-sigma cross-track error in the shadow position is 1198 km.

The TNO has an absolute magnitude Hv=-0.8
Diameter=8551.0 km assuming a 5% albedo -- 471.5 sec chord
Diameter=3490.9 km assuming a 30% albedo -- 192.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 134340, (2019/06/06 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:25  0.9 42.87 137
Nunki          18:56:28.1 -26:16:15  2.0 10.54 169
PPM 270116     19:41:17.1 -23:22:59  5.7  1.64 178
PPM 270047     19:38:35.3 -21:54:32  7.6  0.05 180
134340         19:38:28.4 -21:52:21 15.4       180
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, (2019/06/06 06:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 42.87 137
Nunki          18:55:15.9 -26:17:49  2.0 10.54 169
PPM 270116     19:40:07.2 -23:25:45  5.7  1.64 178
PPM 270047     19:37:26.0 -21:57:14  7.6  0.05 180
134340         19:37:19.2 -21:55:02 15.4       180
Positions are for J2000

Event circumstances last updated at 2017/08/04 18:07:18 UT

Marc W. Buie, Southwest Research Institute

RECON