RECON: TNO occultation with 543377

Event between (543377) 14BF70 and star GA0580:34187124 with event index number of 2753439

Geocentric closest approach at 2029/05/19 05:46:36 UTC

J2000 position of star is 18:03:55.1 -31:07:09
Equinox of date position of star is 18:05:30.1 -31:06:59
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 30% illuminated.
Apparent brightness V=20.8

Object is 13.0 AU from the Sun and 12.2 AU from the Earth.
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 5.8 arcsec/hr.
The 1-sigma error in the time of the event is 246 seconds.
The 1-sigma cross-track error in the shadow position is 632 km.

The object has an absolute magnitude Hv=9.5
Diameter=75.5 km assuming a 5% albedo -- 5.4 sec chord
Diameter=30.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 543377, (2029/05/19 05:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.8 -26:29:40  0.9 21.19 125
Kap Sco        17:44:31.4 -39:02:31  2.4  9.04 138
10Gam2Sgr      18:07:41.8 -30:25:13  3.0  0.80 146
PPM 297195     18:06:09.9 -31:38:29  8.3  0.53 145
PPM 297201     18:06:23.8 -31:12:35  9.3  0.16 145
543377         18:05:49.1 -31:06:56 16.0       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 543377, (2029/05/19 05:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.19 125
Kap Sco        17:42:29.3 -39:01:49  2.4  9.04 138
10Gam2Sgr      18:05:48.4 -30:25:31  3.0  0.80 146
PPM 297195     18:04:15.3 -31:38:42  8.3  0.53 145
PPM 297201     18:04:29.7 -31:12:49  9.3  0.16 145
543377         18:03:55.1 -31:07:09 16.0       145
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:35:28 UT

Marc W. Buie, Southwest Research Institute

RECON