RECON: TNO occultation with 10BK118

Event between 10BK118 and star UC4-143-193010 with event index number of 79274

Geocentric closest approach at 2017/06/22 06:24:20 UTC

J2000 position of star is 16:54:23.6 -61:34:07
Equinox of date position of star is 16:55:55.8 -61:35:42
Stellar brightness R=16.0
Star is 134 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=21.5

TNO is 13.2 AU from the Sun and 12.4 AU from the Earth.
The TNO is moving 36.8 km/sec on the sky relative to the star, or, 14.7 arcsec/hr.
The 1-sigma error in the time of the event is 59 seconds.
The 1-sigma cross-track error in the shadow position is 1205 km.

The TNO has an absolute magnitude Hv=10.2
Diameter=55.5 km assuming a 5% albedo -- 1.5 sec chord
Diameter=22.6 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10BK118, (2017/06/22 06:24UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:40:48.1 -60:54:24  0.0 16.09 132
Bet TrA        15:56:41.8 -63:28:58  2.8  7.07 133
PPM 362381     16:57:03.1 -63:17:47  6.1  1.71 132
PPM 362390     16:57:52.1 -61:40:01  7.0  0.24 134
PPM 362374     16:56:13.1 -61:48:44  9.3  0.22 134
10BK118        16:55:58.7 -61:35:45 16.0       134
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 10BK118, (2017/06/22 06:24UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:39:27.4 -60:49:56  0.0 16.09 132
Bet TrA        15:55:08.1 -63:25:57  2.8  7.07 133
PPM 362381     16:55:24.7 -63:16:11  6.1  1.71 132
PPM 362390     16:56:16.7 -61:38:26  7.0  0.24 134
PPM 362374     16:54:37.5 -61:47:06  9.3  0.22 134
10BK118        16:54:23.6 -61:34:07 16.0       134
Positions are for J2000

Event circumstances last updated at 2016/12/09 18:49:59 UT

Marc W. Buie, Southwest Research Institute

RECON