RECON: TNO occultation with 13JU64

Event between 13JU64 and star UC4-369-074420 with event index number of 198993

Geocentric closest approach at 2018/09/04 09:34:46 UTC

J2000 position of star is 16:11:23.2 -16:23:30
Equinox of date position of star is 16:12:23.5 -16:26:10
Stellar brightness R=14.0, use SENSEUP=64
Star is 155 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=24.7

TNO is 37.4 AU from the Sun and 37.5 AU from the Earth.
The TNO is moving 10.0 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 696 seconds.
The 1-sigma cross-track error in the shadow position is 4951 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 10.5 sec chord
Diameter=42.8 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 13JU64, (2018/09/04 09:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.3 -26:28:19  0.9 10.88 160
8Bet1Sco       16:06:31.6 -19:51:18  2.6  3.69 155
PPM 231413     16:15:44.1 -18:34:56  6.1  2.28 157
PPM 231403     16:15:20.3 -16:35:13  8.3  0.71 156
PPM 231327     16:12:39.8 -16:22:32 10.0  0.08 155
13JU64         16:12:27.2 -16:26:20 14.0       156
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 13JU64, (2018/09/04 09:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.88 160
8Bet1Sco       16:05:26.2 -19:48:20  2.6  3.69 155
PPM 231413     16:14:39.1 -18:32:11  6.1  2.28 157
PPM 231403     16:14:16.3 -16:32:27  8.3  0.71 156
PPM 231327     16:11:35.8 -16:19:42 10.0  0.08 155
13JU64         16:11:23.2 -16:23:30 14.0       155
Positions are for J2000

Event circumstances last updated at 2017/08/02 16:56:29 UT

Marc W. Buie, Southwest Research Institute

RECON