RECON: TNO occultation with 10WG9

Event between 10WG9 and star GA1200:02393209 with event index number of 2108839

Geocentric closest approach at 2023/02/10 00:22:55 UTC

J2000 position of star is 06:15:03.4 +31:17:56
Equinox of date position of star is 06:16:32.8 +31:17:24
Stellar brightness G=9.9, use SENSEUP=2 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 94 degrees from the moon. Moon is 84% illuminated.
Apparent brightness V=22.7

Object is 26.5 AU from the Sun and 25.8 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 133 seconds.
The 1-sigma cross-track error in the shadow position is 5223 km.

The object has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 7.1 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10WG9, (2023/02/10 00:23UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:43.7 +27:58:07  1.1 19.84  75
Alnath         05:27:45.3 +28:37:29  1.6 10.89 105
PPM 071342     06:13:51.0 +32:41:10  5.8  1.51  95
PPM 071330     06:13:12.0 +31:09:59  8.0  0.73  95
PPM 071401     06:16:45.5 +31:27:48  9.4  0.18  94
10WG9          06:16:33.2 +31:17:24  9.9        94
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 10WG9, (2023/02/10 00:23UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 19.84  75
Alnath         05:26:17.6 +28:36:23  1.6 10.89 105
PPM 071342     06:12:20.1 +32:41:36  5.8  1.51  95
PPM 071330     06:11:42.3 +31:10:24  8.0  0.73  95
PPM 071401     06:15:15.6 +31:28:21  9.4  0.18  94
10WG9          06:15:03.4 +31:17:56  9.9        94
Positions are for J2000

Event circumstances last updated at 2023/01/07 03:18:47 UT

Marc W. Buie, Southwest Research Institute

RECON