RECON: TNO occultation with 11LJ29

Event between 11LJ29 and star GA0660:09390720 with event index number of 2121862

Geocentric closest approach at 2022/07/21 12:55:08 UTC

J2000 position of star is 17:05:27.4 -23:04:55
Equinox of date position of star is 17:06:47.9 -23:06:39
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 142 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=22.2

TNO is 45.3 AU from the Sun and 44.6 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 248 seconds.
The 1-sigma cross-track error in the shadow position is 2197 km.

The TNO has an absolute magnitude Hv=5.6
Diameter=463.5 km assuming a 5% albedo -- 26.2 sec chord
Diameter=189.2 km assuming a 30% albedo -- 10.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 11LJ29, (2022/07/21 12:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.6 -26:28:48  0.9  8.84 149
35Eta Oph      17:11:40.4 -15:45:05  2.6  7.45 141
PPM 266403     17:07:32.7 -21:35:38  6.3  1.53 142
PPM 266355     17:05:49.9 -23:25:14  7.3  0.38 142
PPM 266376     17:06:30.7 -22:55:03  9.4  0.21 142
11LJ29         17:06:49.2 -23:06:40 16.1       142
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 11LJ29, (2022/07/21 12:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.84 149
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.45 141
PPM 266403     17:06:11.8 -21:33:54  6.3  1.53 142
PPM 266355     17:04:27.8 -23:23:26  7.3  0.38 142
PPM 266376     17:05:09.0 -22:53:17  9.4  0.21 142
11LJ29         17:05:27.4 -23:04:55 16.1       142
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:05:49 UT

Marc W. Buie, Southwest Research Institute

RECON