RECON: TNO occultation with 136204

Event between (136204) 03WL7 and star UC4-610-041787 with event index number of 80239

Geocentric closest approach at 2017/04/14 16:24:11 UTC

J2000 position of star is 07:44:51.1 +31:49:45
Equinox of date position of star is 07:45:54.7 +31:47:16
Stellar brightness R=16.0
Star is 128 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=20.9

TNO is 15.7 AU from the Sun and 15.7 AU from the Earth.
The TNO is moving 10.7 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1326 km.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 10.8 sec chord
Diameter=46.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 136204, (2017/04/14 16:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:22.3 +27:58:59  1.1  3.80 128
PPM 073009     07:41:00.2 +31:58:07  6.4  1.07 129
PPM 073076     07:45:43.7 +31:04:17  8.0  0.72 128
PPM 073091     07:46:53.2 +31:31:51  9.4  0.32 128
PPM 073080     07:45:58.7 +31:38:37 11.0  0.14 128
136204         07:45:57.1 +31:47:11 16.0       128
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 136204, (2017/04/14 16:24UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.2 +28:01:33  1.1  3.80 128
PPM 073009     07:39:54.0 +32:00:34  6.4  1.07 129
PPM 073076     07:44:38.1 +31:06:50  8.0  0.72 128
PPM 073091     07:45:47.4 +31:34:26  9.4  0.32 128
PPM 073080     07:44:52.8 +31:41:10 11.0  0.14 128
136204         07:44:51.1 +31:49:45 16.0       128
Positions are for J2000

Event circumstances last updated at 2016/09/02 18:13:01 UT

Marc W. Buie, Southwest Research Institute

RECON