RECON: TNO occultation with 543377

Event between (543377) 14BF70 and star GA0580:28357505 with event index number of 2691777

Geocentric closest approach at 2029/02/23 09:49:28 UTC

J2000 position of star is 18:00:33.8 -30:44:30
Equinox of date position of star is 18:02:08.6 -30:44:27
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 173 degrees from the moon. Moon is 68% illuminated.
Apparent brightness V=21.0

Object is 12.8 AU from the Sun and 13.2 AU from the Earth.
Apparent velocity is 23.7 km/sec on the sky relative to the star, or, 8.9 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is 506 km.

The object has an absolute magnitude Hv=9.5
Diameter=75.5 km assuming a 5% albedo -- 3.2 sec chord
Diameter=30.8 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 543377, (2029/02/23 09:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:12.0 -26:29:38  0.9 20.43 164
34Ups Sco      17:32:44.9 -37:18:58  2.7  9.00 167
10Gam2Sgr      18:07:40.9 -30:25:14  3.0  1.17 172
PPM 297099     18:01:42.4 -30:19:21  8.3  0.45 173
PPM 297106     18:02:00.9 -30:38:00  9.2  0.14 173
543377         18:02:26.6 -30:44:26 16.8       172
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, (2029/02/23 09:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.43 164
34Ups Sco      17:30:45.8 -37:17:46  2.7  9.00 167
10Gam2Sgr      18:05:48.4 -30:25:31  3.0  1.17 172
PPM 297099     17:59:50.0 -30:19:23  8.3  0.45 173
PPM 297106     18:00:08.2 -30:38:03  9.2  0.14 173
543377         18:00:33.8 -30:44:30 16.8       173
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:31:26 UT

Marc W. Buie, Southwest Research Institute

RECON