RECON: TNO occultation with 134340

Event between (134340) Pluto and star UC4-340-186638 with event index number of 153688

Geocentric closest approach at 2018/11/01 19:58:53 UTC

J2000 position of star is 19:21:13.1 -22:08:17
Equinox of date position of star is 19:22:17.3 -22:06:12
Stellar brightness R=14.7, use SENSEUP=128
Star is 145 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=14.7

TNO is 33.7 AU from the Sun and 34.0 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 78 seconds.
The 1-sigma cross-track error in the shadow position is 1234 km.

The TNO has an absolute magnitude Hv=-0.8
Diameter=8551.0 km assuming a 5% albedo -- 531.0 sec chord
Diameter=3490.9 km assuming a 30% albedo -- 216.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 134340, (2018/11/01 19:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.9 -26:28:20  0.9 39.21 106
Nunki          18:56:25.9 -26:16:18  2.0  7.23 138
PPM 269651     19:21:45.8 -22:21:58  5.8  0.30 144
PPM 269691     19:23:23.0 -22:02:13  8.4  0.25 145
PPM 269661     19:22:09.4 -22:02:18  9.7  0.08 144
134340         19:22:20.6 -22:06:05 14.7       145
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, (2018/11/01 19:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 39.21 106
Nunki          18:55:15.9 -26:17:49  2.0  7.23 138
PPM 269651     19:20:38.2 -22:24:09  5.8  0.30 144
PPM 269691     19:22:15.6 -22:04:26  8.4  0.25 145
PPM 269661     19:21:01.9 -22:04:30  9.7  0.08 144
134340         19:21:13.1 -22:08:17 14.7       144
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:01:58 UT

Marc W. Buie, Southwest Research Institute

RECON