RECON: TNO occultation with 11UK413

Event between 11UK413 and star GA1100:01436595 with event index number of 2130130

Geocentric closest approach at 2023/01/27 00:22:13 UTC

J2000 position of star is 05:48:02.1 +20:34:42
Equinox of date position of star is 05:49:24.4 +20:35:05
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 70 degrees from the moon. Moon is 33% illuminated.
Apparent brightness V=22.8

Object is 42.3 AU from the Sun and 41.5 AU from the Earth.
Apparent velocity is 19.1 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 406 seconds.
The 1-sigma cross-track error in the shadow position is 2582 km.

The object has an absolute magnitude Hv=6.5
Diameter=304.8 km assuming a 5% albedo -- 15.9 sec chord
Diameter=124.4 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 11UK413, (2023/01/27 00:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.3 +07:24:34  0.4 13.28  72
Alnath         05:27:45.1 +28:37:29  1.6  9.42  66
PPM 121513     05:53:45.5 +19:52:18  6.4  1.24  71
PPM 094877     05:49:01.1 +20:56:49  7.9  0.37  70
PPM 094897     05:49:41.8 +20:34:58  9.4  0.07  70
11UK413        05:49:24.6 +20:35:05 15.4        70
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 11UK413, (2023/01/27 00:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.28  72
Alnath         05:26:17.6 +28:36:23  1.6  9.42  66
PPM 121513     05:52:23.4 +19:52:04  6.4  1.24  71
PPM 094877     05:47:38.4 +20:56:26  7.9  0.37  70
PPM 094897     05:48:19.3 +20:34:36  9.4  0.07  70
11UK413        05:48:02.1 +20:34:42 15.4        70
Positions are for J2000

Event circumstances last updated at 2023/01/08 03:29:45 UT

Marc W. Buie, Southwest Research Institute

RECON