RECON: TNO occultation with 14WD556

Event between 14WD556 and star GA0720:00177554 with event index number of 1969113

Geocentric closest approach at 2024/10/11 03:32:59 UTC

J2000 position of star is 02:21:41.3 -17:25:37
Equinox of date position of star is 02:22:43.1 -17:19:41
Stellar brightness G=14.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 91 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=23.3

TNO is 31.9 AU from the Sun and 31.1 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 234 seconds.
The 1-sigma cross-track error in the shadow position is 3928 km.

The TNO has an absolute magnitude Hv=8.2
Diameter=112.2 km assuming a 5% albedo -- 6.0 sec chord
Diameter=45.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14WD556, (2024/10/11 03:32UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:43.8 -08:10:29  0.1 43.03 130
68Omi Cet      02:20:36.0 -02:51:58  2.0 14.46  97
PPM 211427     02:23:15.1 -17:33:02  5.9  0.25  91
PPM 211432     02:23:28.9 -16:23:43  7.4  0.93  91
PPM 211401     02:22:20.0 -17:10:17 10.0  0.19  91
14WD556        02:22:51.5 -17:18:53 14.5        91
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 14WD556, (2024/10/11 03:32UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 43.03 130
68Omi Cet      02:19:20.8 -02:58:45  2.0 14.46  97
PPM 211427     02:22:05.0 -17:39:45  5.9  0.25  91
PPM 211432     02:22:18.4 -16:30:26  7.4  0.93  91
PPM 211401     02:21:09.8 -17:17:02 10.0  0.19  91
14WD556        02:21:41.3 -17:25:37 14.5        91
Positions are for J2000

Event circumstances last updated at 2021/10/30 22:59:27 UT

Marc W. Buie, Southwest Research Institute

RECON