RECON: TNO occultation with 13JO64

Event between 13JO64 and star UC4-379-075337 with event index number of 106689

Geocentric closest approach at 2018/02/14 22:57:40 UTC

J2000 position of star is 16:35:54.9 -14:21:44
Equinox of date position of star is 16:36:55.7 -14:23:52
Stellar brightness R=12.7, use SENSEUP=16
Star is 67 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=24.0

TNO is 36.3 AU from the Sun and 36.5 AU from the Earth.
The TNO is moving 14.4 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 805 seconds.
The 1-sigma cross-track error in the shadow position is 2953 km.

The TNO has an absolute magnitude Hv=8.2
Diameter=135.5 km assuming a 5% albedo -- 9.4 sec chord
Diameter=55.3 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 13JO64, (2018/02/14 22:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.3 -26:28:15  0.9 12.17  66
13Zet Oph      16:38:09.5 -10:36:09  2.6  3.81  67
8Phi Oph       16:32:10.8 -16:39:03  4.0  2.53  67
PPM 231897     16:37:24.4 -14:40:39  8.0  0.30  66
PPM 231879     16:36:19.1 -14:27:08  9.6  0.16  67
13JO64         16:36:56.4 -14:23:54 12.7        66
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 13JO64, (2018/02/14 22:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.17  66
13Zet Oph      16:37:09.6 -10:34:01  2.6  3.81  67
8Phi Oph       16:31:08.4 -16:36:46  4.0  2.53  67
PPM 231897     16:36:22.7 -14:38:30  8.0  0.30  66
PPM 231879     16:35:17.6 -14:24:57  9.6  0.16  67
13JO64         16:35:54.9 -14:21:44 12.7        67
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:16:35 UT

Marc W. Buie, Southwest Research Institute

RECON