RECON: TNO occultation with 131318

Event between (131318) 01FL194 and star UC4-340-069709 with event index number of 183933

Geocentric closest approach at 2019/03/17 04:16:15 UTC

J2000 position of star is 14:13:57.7 -22:10:44
Equinox of date position of star is 14:14:56.4 -22:15:34
Stellar brightness R=12.7, use SENSEUP=16
Star is 97 degrees from the moon. Moon is 79% illuminated.
TNO apparent brightness V=23.2

TNO is 34.0 AU from the Sun and 33.2 AU from the Earth.
The TNO is moving 16.8 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 401 seconds.
The 1-sigma cross-track error in the shadow position is 4478 km.

The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 9.9 sec chord
Diameter=67.8 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 131318, (2019/03/17 04:16UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:12.5 -11:15:40  1.0 16.04  82
5The Cen       14:07:49.2 -36:27:48  2.1 14.28 100
PPM 262630     14:13:30.1 -24:27:10  6.2  2.21  97
PPM 262652     14:14:48.5 -22:33:32  8.3  0.30  97
PPM 262654     14:15:03.2 -22:12:40  9.9  0.06  97
131318         14:15:02.5 -22:16:05 12.7        97
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 131318, (2019/03/17 04:16UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 16.04  82
5The Cen       14:06:40.2 -36:22:21  2.1 14.28 100
PPM 262630     14:12:24.6 -24:21:48  6.2  2.21  97
PPM 262652     14:13:43.6 -22:28:11  8.3  0.30  97
PPM 262654     14:13:58.3 -22:07:20  9.9  0.06  97
131318         14:13:57.7 -22:10:44 12.7        97
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:12:32 UT

Marc W. Buie, Southwest Research Institute

RECON