RECON: TNO occultation with 13UL17

Event between 13UL17 and star GA0980:00146842 with event index number of 2007977

Geocentric closest approach at 2022/10/09 21:20:42 UTC

J2000 position of star is 01:42:23.8 +08:57:13
Equinox of date position of star is 01:43:35.8 +09:04:04
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 10 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=24.4

TNO is 42.7 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 277 seconds.
The 1-sigma cross-track error in the shadow position is 4461 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=147.2 km assuming a 5% albedo -- 5.9 sec chord
Diameter=60.1 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 13UL17, (2022/10/09 21:21UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:13.8 +16:33:12  0.8 42.90  53
6Bet Ari       01:55:54.2 +20:55:06  2.6 12.22  20
110Omi Psc     01:46:36.0 +09:16:17  4.3  0.77  11
PPM 144882     01:42:37.4 +09:11:14  8.3  0.27  10
13UL17         01:43:35.9 +09:04:04 16.6        11
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 13UL17, (2022/10/09 21:21UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 42.90  53
6Bet Ari       01:54:38.5 +20:48:26  2.6 12.22  20
110Omi Psc     01:45:23.7 +09:09:29  4.3  0.77  11
PPM 144882     01:41:25.3 +09:04:22  8.3  0.27  10
13UL17         01:42:23.8 +08:57:13 16.6        10
Positions are for J2000

Event circumstances last updated at 2022/10/01 04:15:17 UT

Marc W. Buie, Southwest Research Institute

RECON