RECON: TNO occultation with 05JB186

Event between 05JB186 and star GA0740:09280322 with event index number of 1991269

Geocentric closest approach at 2023/03/03 23:09:59 UTC

J2000 position of star is 17:35:10.6 -14:49:39
Equinox of date position of star is 17:36:29.5 -14:50:28
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 138 degrees from the moon. Moon is 89% illuminated.
Apparent brightness V=23.7

Object is 37.2 AU from the Sun and 37.3 AU from the Earth.
Apparent velocity is 12.6 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 391 seconds.
The 1-sigma cross-track error in the shadow position is 3548 km.

The object has an absolute magnitude Hv=7.8
Diameter=165.2 km assuming a 5% albedo -- 13.1 sec chord
Diameter=67.4 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 05JB186, (2023/03/03 23:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:49.9 -26:28:53  0.9 19.24 126
35Eta Oph      17:11:42.5 -15:45:07  2.6  6.05 133
55Xi Ser       17:38:54.9 -15:24:40  3.5  0.82 139
PPM 233294     17:37:03.1 -14:39:25  7.5  0.23 138
PPM 233291     17:36:51.1 -14:45:51  9.9  0.11 138
05JB186        17:36:30.0 -14:50:28 16.3       138
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 05JB186, (2023/03/03 23:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.24 126
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.05 133
55Xi Ser       17:37:35.1 -15:23:56  3.5  0.82 139
PPM 233294     17:35:43.8 -14:38:37  7.5  0.23 138
PPM 233291     17:35:31.7 -14:45:03  9.9  0.11 138
05JB186        17:35:10.6 -14:49:39 16.3       138
Positions are for J2000

Event circumstances last updated at 2023/01/07 03:19:17 UT

Marc W. Buie, Southwest Research Institute

RECON