RECON: TNO occultation with 13TX187

Event between 13TX187 and star GA0940:00084636 with event index number of 2465808

Geocentric closest approach at 2024/06/08 16:43:48 UTC

J2000 position of star is 00:55:50.4 +05:42:03
Equinox of date position of star is 00:57:04.9 +05:49:49
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=23.4

Object is 42.2 AU from the Sun and 42.7 AU from the Earth.
Apparent velocity is 18.1 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 503 seconds.
The 1-sigma cross-track error in the shadow position is 5007 km.

The object has an absolute magnitude Hv=7.0
Diameter=243.2 km assuming a 5% albedo -- 13.0 sec chord
Diameter=99.3 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 13TX187, (2024/06/08 16:47UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:29.8 +15:19:09  2.8 14.12  95
96 G. Psc      00:49:39.9 +05:24:24  5.8  1.90  92
PPM 144057     00:56:35.7 +06:59:10  8.1  1.16  90
PPM 144059     00:56:38.3 +05:30:02  9.9  0.35  91
13TX187        00:57:06.4 +05:49:58 15.6        90
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 13TX187, (2024/06/08 16:47UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 14.12  95
96 G. Psc      00:48:24.1 +05:16:25  5.8  1.90  92
PPM 144057     00:55:19.6 +06:51:15  8.1  1.16  90
PPM 144059     00:55:22.4 +05:22:06  9.9  0.35  91
13TX187        00:55:50.4 +05:42:03 15.6        91
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:47:25 UT

Marc W. Buie, Southwest Research Institute

RECON