RECON: TNO occultation with 523755

Event between (523755) 14WZ508 and star GA0760:04590645 with event index number of 2614861

Geocentric closest approach at 2024/01/12 20:37:49 UTC

J2000 position of star is 12:03:07.7 -12:10:38
Equinox of date position of star is 12:04:21.1 -12:18:35
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=22.7

Object is 28.8 AU from the Sun and 28.5 AU from the Earth.
Apparent velocity is 8.2 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 209 seconds.
The 1-sigma cross-track error in the shadow position is 1684 km.

The object has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 19.3 sec chord
Diameter=64.7 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523755, (2024/01/12 20:38UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:27.8 -11:17:10  1.0 20.11 107
4Gam Crv       12:17:02.8 -17:40:31  2.6  6.18 118
PPM 225208     12:00:23.2 -10:36:34  6.4  1.96 125
PPM 225246     12:02:01.3 -12:17:30  8.2  0.57 124
PPM 225279     12:03:32.6 -12:23:08  8.9  0.21 123
523755         12:04:21.7 -12:18:39 15.1       123
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 523755, (2024/01/12 20:38UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 20.11 107
4Gam Crv       12:15:48.1 -17:32:30  2.6  6.18 118
PPM 225208     11:59:09.3 -10:28:33  6.4  1.96 125
PPM 225246     12:00:47.3 -12:09:28  8.2  0.57 124
PPM 225279     12:02:18.7 -12:15:06  8.9  0.21 123
523755         12:03:07.7 -12:10:38 15.1       123
Positions are for J2000

Event circumstances last updated at 2023/11/06 05:18:29 UT

Marc W. Buie, Southwest Research Institute

RECON