RECON: TNO occultation with 03YX179

Event between 03YX179 and star GA1060:03240890 with event index number of 1948720

Geocentric closest approach at 2023/01/10 23:00:03 UTC

J2000 position of star is 09:24:13.1 +17:27:57
Equinox of date position of star is 09:25:29.9 +17:21:57
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 16 degrees from the moon. Moon is 86% illuminated.
Apparent brightness V=23.3

Object is 41.9 AU from the Sun and 41.1 AU from the Earth.
Apparent velocity is 22.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 449 seconds.
The 1-sigma cross-track error in the shadow position is 4427 km.

The object has an absolute magnitude Hv=7.0
Diameter=242.1 km assuming a 5% albedo -- 11.0 sec chord
Diameter=98.8 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 03YX179, (2023/01/10 23:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.8 +11:51:14  1.3 12.00   6
PPM 126439     09:26:48.9 +16:29:06  6.3  0.94  16
PPM 126424     09:25:58.9 +17:36:37  8.2  0.27  16
PPM 126406     09:24:58.7 +17:18:15 11.4  0.14  16
03YX179        09:25:29.9 +17:21:57 16.0        16
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 03YX179, (2023/01/10 23:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 12.00   6
PPM 126439     09:25:32.4 +16:35:07  6.3  0.94  16
PPM 126424     09:24:42.0 +17:42:37  8.2  0.27  16
PPM 126406     09:23:41.8 +17:24:14 11.4  0.14  16
03YX179        09:24:13.1 +17:27:57 16.0        16
Positions are for J2000

Event circumstances last updated at 2023/01/07 03:17:35 UT

Marc W. Buie, Southwest Research Institute

RECON