RECON: TNO occultation with 543377

Event between (543377) 14BF70 and star GA0580:31918789 with event index number of 2775959

Geocentric closest approach at 2029/06/08 01:32:32 UTC

J2000 position of star is 17:59:45.3 -31:06:47
Equinox of date position of star is 18:01:20.3 -31:06:46
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 15% illuminated.
Apparent brightness V=20.6

Object is 13.1 AU from the Sun and 12.1 AU from the Earth.
Apparent velocity is 18.2 km/sec on the sky relative to the star, or, 7.5 arcsec/hr.
The 1-sigma error in the time of the event is 192 seconds.
The 1-sigma cross-track error in the shadow position is 459 km.

The object has an absolute magnitude Hv=9.5
Diameter=75.5 km assuming a 5% albedo -- 4.2 sec chord
Diameter=30.8 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 543377, (2029/06/08 01:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.0 -26:29:41  0.9 20.30 142
34Ups Sco      17:32:46.1 -37:18:58  2.7  8.61 127
10Gam2Sgr      18:07:42.0 -30:25:13  3.0  1.47 121
PPM 297078     18:00:39.5 -31:07:58  8.5  0.22 122
PPM 297093     18:01:10.8 -31:06:09  9.2  0.10 122
543377         18:01:39.5 -31:06:45 15.4       121
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 543377, (2029/06/08 01:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.30 142
34Ups Sco      17:30:45.8 -37:17:46  2.7  8.61 127
10Gam2Sgr      18:05:48.4 -30:25:31  3.0  1.47 121
PPM 297078     17:58:45.2 -31:07:57  8.5  0.22 122
PPM 297093     17:59:16.5 -31:06:09  9.2  0.10 122
543377         17:59:45.3 -31:06:47 15.4       122
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:00:43 UT

Marc W. Buie, Southwest Research Institute

RECON