RECON: TNO occultation with 135024

Event between (135024) 01KO76 and star UC4-344-077539 with event index number of 180868

Geocentric closest approach at 2019/02/14 18:16:42 UTC

J2000 position of star is 16:00:42.1 -21:14:55
Equinox of date position of star is 16:01:45.3 -21:17:53
Stellar brightness R=15.3, use SENSEUP=128
Star is 164 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=23.5

TNO is 44.1 AU from the Sun and 44.2 AU from the Earth.
The TNO is moving 8.4 km/sec on the sky relative to the star, or, 0.9 arcsec/hr.
The 1-sigma error in the time of the event is 1507 seconds.
The 1-sigma cross-track error in the shadow position is 4022 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 29.9 sec chord
Diameter=102.6 km assuming a 30% albedo -- 12.2 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 
 
 

Star training set for 135024, (2019/02/14 18:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.0 -26:28:22  0.9  8.36 168
7Del Sco       16:01:28.0 -22:40:29  2.3  1.38 163
PPM 264922     15:58:47.7 -21:02:14  6.1  0.75 163
PPM 264995     16:02:13.2 -21:12:29  7.3  0.13 164
135024         16:01:49.5 -21:18:04 15.3       164
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, (2019/02/14 18:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.36 168
7Del Sco       16:00:20.0 -22:37:18  2.3  1.38 163
PPM 264922     15:57:40.5 -20:58:59  6.1  0.75 163
PPM 264995     16:01:05.8 -21:09:20  7.3  0.13 164
135024         16:00:42.1 -21:14:55 15.3       163
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:14:25 UT

Marc W. Buie, Southwest Research Institute

RECON