RECON: TNO occultation with 16AE193

Event between 16AE193 and star UC4-529-046756 with event index number of 111322

Geocentric closest approach at 2018/02/12 15:32:14 UTC

J2000 position of star is 08:34:25.6 +15:40:46
Equinox of date position of star is 08:35:24.1 +15:37:08
Stellar brightness R=14.3, use SENSEUP=64
Star is 161 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=20.4

TNO is 17.0 AU from the Sun and 16.1 AU from the Earth.
The TNO is moving 20.5 km/sec on the sky relative to the star, or, 6.3 arcsec/hr.
The 1-sigma error in the time of the event is 42 seconds.
The 1-sigma cross-track error in the shadow position is 662 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=145.2 km assuming a 5% albedo -- 7.1 sec chord
Diameter=59.3 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 16AE193, (2018/02/12 15:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:25.4 +27:58:52  1.1 16.78 170
PPM 125463     08:37:08.5 +15:14:59  6.5  0.55 161
PPM 125439     08:36:18.5 +15:40:00  8.5  0.21 161
PPM 125416     08:35:04.5 +15:35:39 11.6  0.09 161
16AE193        08:35:26.6 +15:36:59 14.3       161
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 16AE193, (2018/02/12 15:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 16.78 170
PPM 125463     08:36:07.7 +15:18:49  6.5  0.55 161
PPM 125439     08:35:17.5 +15:43:48  8.5  0.21 161
PPM 125416     08:34:03.5 +15:39:25 11.6  0.09 161
16AE193        08:34:25.6 +15:40:46 14.3       161
Positions are for J2000

Event circumstances last updated at 2017/05/17 18:01:25 UT

Marc W. Buie, Southwest Research Institute

RECON