RECON: TNO occultation with 135024

Event between (135024) 01KO76 and star UC4-347-075318 with event index number of 153695

Geocentric closest approach at 2018/09/18 10:08:54 UTC

J2000 position of star is 15:48:21.9 -20:36:58
Equinox of date position of star is 15:49:24.6 -20:40:13
Stellar brightness R=15.0, use SENSEUP=128
Star is 42 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=23.5

TNO is 44.1 AU from the Sun and 44.5 AU from the Earth.
The TNO is moving 17.8 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 723 seconds.
The 1-sigma cross-track error in the shadow position is 3726 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 14.1 sec chord
Diameter=102.6 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 
 
 

Star training set for 135024, (2018/09/18 10:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.5 -26:28:19  0.9 11.05  32
7Del Sco       16:01:26.6 -22:40:25  2.3  3.43  39
45Lam Lib      15:54:25.4 -20:13:18  5.0  1.25  41
PPM 264726     15:50:00.3 -20:30:17  7.6  0.21  42
PPM 264692     15:48:55.8 -20:37:50  9.4  0.13  42
135024         15:49:27.4 -20:40:21 15.0        42
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 135024, (2018/09/18 10:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.05  32
7Del Sco       16:00:20.0 -22:37:18  2.3  3.43  39
45Lam Lib      15:53:20.0 -20:10:02  5.0  1.25  41
PPM 264726     15:48:54.9 -20:26:55  7.6  0.21  42
PPM 264692     15:47:50.4 -20:34:26  9.4  0.13  42
135024         15:48:21.9 -20:36:58 15.0        42
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:57:12 UT

Marc W. Buie, Southwest Research Institute

RECON