RECON: TNO occultation with 13SS102

Event between 13SS102 and star GA0960:00109180 with event index number of 2675463

Geocentric closest approach at 2023/06/15 15:43:01 UTC

J2000 position of star is 01:14:18.5 +06:01:52
Equinox of date position of star is 01:15:26.4 +06:08:45
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 35 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.8

TNO is 38.5 AU from the Sun and 38.9 AU from the Earth.
The TNO is moving 17.5 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 139 seconds.
The 1-sigma cross-track error in the shadow position is 2460 km.

The TNO has an absolute magnitude Hv=6.8
Diameter=221.8 km assuming a 5% albedo -- 15.2 sec chord
Diameter=90.6 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 13SS102, (2023/06/15 15:43UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:26.8 +15:18:50  2.8 17.56  46
80 Psc         01:09:34.9 +05:46:24  5.5  1.53  37
PPM 144454     01:18:48.9 +06:00:26  8.1  0.83  35
PPM 144363     01:13:44.2 +05:54:00  9.8  0.51  36
PPM 144392     01:15:29.9 +06:21:36 11.2  0.21  35
13SS102        01:15:31.7 +06:09:17 15.8        35
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 13SS102, (2023/06/15 15:43UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 17.56  46
80 Psc         01:08:21.8 +05:38:55  5.5  1.53  37
PPM 144454     01:17:35.7 +05:53:03  8.1  0.83  35
PPM 144363     01:12:31.1 +05:46:34  9.8  0.51  36
PPM 144392     01:14:16.6 +06:14:11 11.2  0.21  35
13SS102        01:14:18.5 +06:01:52 15.8        35
Positions are for J2000

Event circumstances last updated at 2021/10/08 01:00:29 UT

Marc W. Buie, Southwest Research Institute

RECON