RECON: TNO occultation with 432949

Event between (432949) 12HH2 and star GA0760:05333887 with event index number of 2780171

Geocentric closest approach at 2029/06/17 03:55:26 UTC

J2000 position of star is 15:07:11.8 -13:21:32
Equinox of date position of star is 15:08:32.9 -13:27:07
Stellar brightness G=12.4, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 81 degrees from the moon. Moon is 26% illuminated.
Apparent brightness V=21.5

Object is 32.3 AU from the Sun and 31.5 AU from the Earth.
Apparent velocity is 18.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 96 seconds.
The 1-sigma cross-track error in the shadow position is 1792 km.

The object has an absolute magnitude Hv=6.3
Diameter=322.1 km assuming a 5% albedo -- 17.3 sec chord
Diameter=131.5 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 5:4E+10:8II
 
 
 
 
 
 
 
 

Star training set for 432949, (2029/06/17 03:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.1 -26:29:41  0.9 23.27 102
27Bet Lib      15:18:35.8 -09:29:23  2.6  4.65  83
21Nu Lib       15:08:16.6 -16:22:09  5.2  2.90  82
PPM 229805     15:09:59.8 -13:33:26  8.1  0.30  82
PPM 229768     15:08:28.5 -13:31:27  9.6  0.10  81
432949         15:08:49.3 -13:28:15 12.4        82
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 432949, (2029/06/17 03:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.27 102
27Bet Lib      15:17:00.3 -09:22:59  2.6  4.65  83
21Nu Lib       15:06:37.6 -16:15:25  5.2  2.90  82
PPM 229805     15:08:22.3 -13:26:46  8.1  0.30  82
PPM 229768     15:06:51.0 -13:24:44  9.6  0.10  81
432949         15:07:11.8 -13:21:32 12.4        81
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:02:30 UT

Marc W. Buie, Southwest Research Institute

RECON