RECON: TNO occultation with 09DJ143

Event between 09DJ143 and star GA0920:03892318 with event index number of 2034259

Geocentric closest approach at 2024/02/18 16:37:53 UTC

J2000 position of star is 14:22:30.4 +03:30:46
Equinox of date position of star is 14:23:41.4 +03:24:25
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 71% illuminated.
Apparent brightness V=22.3

Object is 37.8 AU from the Sun and 37.3 AU from the Earth.
Apparent velocity is 11.3 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 147 seconds.
The 1-sigma cross-track error in the shadow position is 2159 km.

The object has an absolute magnitude Hv=6.4
Diameter=302.0 km assuming a 5% albedo -- 27.9 sec chord
Diameter=123.3 km assuming a 30% albedo -- 11.4 sec chord
Dynamical classification is 13:4EEEEEEEEE
 
 
 
 
 
 
 
 

Star training set for 09DJ143, (2024/02/18 16:37UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:45.8 +19:03:30  0.0 15.75 113
27Bet Lib      15:18:18.6 -09:28:14  2.6 18.73 143
PPM 160711     14:31:58.0 +04:39:58  6.0  2.41 125
PPM 160515     14:19:42.9 +03:33:50  7.7  1.01 123
PPM 160566     14:23:38.5 +03:20:45  8.6  0.06 124
09DJ143        14:23:43.4 +03:24:14 16.4       124
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 09DJ143, (2024/02/18 16:37UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:37.9 +19:10:10  0.0 15.75 113
27Bet Lib      15:17:00.3 -09:22:59  2.6 18.73 143
PPM 160711     14:30:45.4 +04:46:20  6.0  2.41 125
PPM 160515     14:18:29.8 +03:40:28  7.7  1.01 123
PPM 160566     14:22:25.4 +03:27:18  8.6  0.06 124
09DJ143        14:22:30.4 +03:30:46 16.4       124
Positions are for J2000

Event circumstances last updated at 2023/06/21 02:48:50 UT

Marc W. Buie, Southwest Research Institute

RECON