RECON: TNO occultation with 14YX49

Event between 14YX49 and star UC4-622-042868 with event index number of 185487

Geocentric closest approach at 2019/03/13 11:58:36 UTC

J2000 position of star is 08:35:48.0 +34:21:31
Equinox of date position of star is 08:36:53.8 +34:17:51
Stellar brightness R=15.3, use SENSEUP=128
Star is 54 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=22.0

TNO is 20.1 AU from the Sun and 19.4 AU from the Earth.
The TNO is moving 14.3 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 220 seconds.
The 1-sigma cross-track error in the shadow position is 875 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=107.2 km assuming a 5% albedo -- 7.5 sec chord
Diameter=43.7 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14YX49, (2019/03/13 11:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:29.4 +27:58:42  1.1 12.50  43
33 Lyn         08:35:57.6 +36:21:09  5.9  2.07  54
PPM 073798     08:34:06.9 +34:19:02  8.5  0.60  54
PPM 073842     08:37:54.6 +34:39:21 10.0  0.41  55
14YX49         08:37:00.6 +34:17:28 15.3        55
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 14YX49, (2019/03/13 11:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 12.50  43
33 Lyn         08:34:43.9 +36:25:10  5.9  2.07  54
PPM 073798     08:32:54.1 +34:23:01  8.5  0.60  54
PPM 073842     08:36:41.8 +34:43:25 10.0  0.41  55
14YX49         08:35:48.0 +34:21:31 15.3        54
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:12:11 UT

Marc W. Buie, Southwest Research Institute

RECON