RECON: TNO occultation with 14LT28

Event between 14LT28 and star GA0620:42934783 with event index number of 2506572

Geocentric closest approach at 2024/04/11 09:22:42 UTC

J2000 position of star is 21:02:17.4 -26:20:32
Equinox of date position of star is 21:03:38.0 -26:15:06
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=22.2

TNO is 42.1 AU from the Sun and 42.4 AU from the Earth.
The TNO is moving 15.4 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 229 seconds.
The 1-sigma cross-track error in the shadow position is 1866 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=407.4 km assuming a 5% albedo -- 26.5 sec chord
Diameter=166.3 km assuming a 30% albedo -- 10.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14LT28, (2024/04/11 09:26UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:59.2 -29:29:35  1.2 25.61  86
Alnair         22:09:45.1 -46:50:32  1.7 24.38 102
PPM 271944     21:03:11.5 -26:47:05  6.3  0.55 108
PPM 271975     21:04:45.7 -25:48:46  9.7  0.49 107
14LT28         21:03:43.3 -26:14:44 16.5       107
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, (2024/04/11 09:26UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 25.61  86
Alnair         22:08:14.3 -46:57:43  1.7 24.38 102
PPM 271944     21:01:45.3 -26:52:52  6.3  0.55 108
PPM 271975     21:03:20.1 -25:54:36  9.7  0.49 107
14LT28         21:02:17.4 -26:20:32 16.5       108
Positions are for J2000

Event circumstances last updated at 2022/10/11 04:25:29 UT

Marc W. Buie, Southwest Research Institute

RECON