RECON: TNO occultation with 14LT28

Event between 14LT28 and star GA0620:42805396 with event index number of 1044425

Geocentric closest approach at 2020/05/23 01:12:38 UTC

J2000 position of star is 20:38:59.5 -27:32:45
Equinox of date position of star is 20:40:09.7 -27:28:36
Stellar brightness G=16.4, use SENSEUP=128
Star is 120 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.3

TNO is 41.9 AU from the Sun and 41.4 AU from the Earth.
The TNO is moving 9.5 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 572 seconds.
The 1-sigma cross-track error in the shadow position is 2608 km.

The TNO has an absolute magnitude Hv=6.0
Diameter=385.5 km assuming a 5% albedo -- 40.6 sec chord
Diameter=157.4 km assuming a 30% albedo -- 16.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14LT28, (2020/05/23 01:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:46.4 -29:30:49  1.2 30.40  91
38Zet Sgr      19:03:54.4 -29:50:57  2.7 21.22 141
PPM 271487     20:42:37.1 -25:55:35  6.2  1.64 119
PPM 271446     20:41:09.6 -27:38:39  7.8  0.27 120
PPM 271420     20:39:39.6 -27:14:46  9.0  0.26 120
14LT28         20:40:13.1 -27:28:23 16.4       120
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 14LT28, (2020/05/23 01:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 30.40  91
38Zet Sgr      19:02:36.7 -29:52:49  2.7 21.22 141
PPM 271487     20:41:24.3 -26:00:00  6.2  1.64 119
PPM 271446     20:39:56.0 -27:43:03  7.8  0.27 120
PPM 271420     20:38:26.0 -27:19:07  9.0  0.26 120
14LT28         20:38:59.5 -27:32:45 16.4       120
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:40:53 UT

Marc W. Buie, Southwest Research Institute

RECON