RECON: TNO occultation with 13SL100

Event between 13SL100 and star GA0960:00144868 with event index number of 2464574

Geocentric closest approach at 2024/02/15 07:28:14 UTC

J2000 position of star is 01:41:05.1 +06:56:12
Equinox of date position of star is 01:42:13.7 +07:02:47
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 15 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=23.9

TNO is 41.2 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 412 seconds.
The 1-sigma cross-track error in the shadow position is 3982 km.

The TNO has an absolute magnitude Hv=7.6
Diameter=166.0 km assuming a 5% albedo -- 9.2 sec chord
Diameter=67.8 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 13SL100, (2024/02/15 07:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:18.5 +16:33:21  0.8 43.75  31
68Omi Cet      02:20:34.0 -02:52:09  2.0 13.77  20
106Nu Psc      01:42:41.4 +05:36:32  4.4  1.45  16
PPM 144799     01:37:57.0 +06:50:25  8.0  1.11  16
PPM 144870     01:42:16.4 +07:04:47  9.8  0.03  15
13SL100        01:42:21.0 +07:03:29 16.8        14
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 13SL100, (2024/02/15 07:28UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 43.75  31
68Omi Cet      02:19:20.8 -02:58:45  2.0 13.77  20
106Nu Psc      01:41:25.9 +05:29:15  4.4  1.45  16
PPM 144799     01:36:41.2 +06:43:04  8.0  1.11  16
PPM 144870     01:41:00.5 +06:57:31  9.8  0.03  15
13SL100        01:41:05.1 +06:56:12 16.8        15
Positions are for J2000

Event circumstances last updated at 2021/10/23 00:42:58 UT

Marc W. Buie, Southwest Research Institute

RECON