RECON: TNO occultation with 10BK118

Event between 10BK118 and star GA0380:12615367 with event index number of 2077633

Geocentric closest approach at 2023/04/21 00:44:42 UTC

J2000 position of star is 14:39:30.2 -50:06:21
Equinox of date position of star is 14:41:05.8 -50:12:18
Stellar brightness G=13.1, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=23.9

Object is 23.0 AU from the Sun and 22.2 AU from the Earth.
Apparent velocity is 31.8 km/sec on the sky relative to the star, or, 7.1 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is 1076 km.

The object has an absolute magnitude Hv=10.2
Diameter=55.2 km assuming a 5% albedo -- 1.7 sec chord
Diameter=22.5 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10BK118, (2023/04/21 00:45UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:41:12.9 -60:55:50  0.0 10.73 135
Alp Lup        14:43:29.5 -47:29:12  2.3  2.75 149
Rho Lup        14:39:28.0 -49:31:34  3.8  0.73 147
PPM 319728     14:39:53.0 -50:00:03  6.6  0.28 146
PPM 343050     14:41:51.4 -50:10:15  9.4  0.13 146
10BK118        14:41:05.9 -50:12:18 13.1       146
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 10BK118, (2023/04/21 00:45UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:39:25.2 -60:49:52  0.0 10.73 135
Alp Lup        14:41:55.7 -47:23:18  2.3  2.75 149
Rho Lup        14:37:53.1 -49:25:34  3.8  0.73 147
PPM 319728     14:38:17.6 -49:54:04  6.6  0.28 146
PPM 343050     14:40:15.6 -50:04:19  9.4  0.13 146
10BK118        14:39:30.2 -50:06:21 13.1       146
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:24:04 UT

Marc W. Buie, Southwest Research Institute

RECON