RECON: TNO occultation with 544430

Event between (544430) 14UW224 and star GA1000:03379527 with event index number of 2664311

Geocentric closest approach at 2029/01/14 20:32:46 UTC

J2000 position of star is 09:46:57.7 +10:25:12
Equinox of date position of star is 09:48:15.3 +10:18:26
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 151 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=22.7

Object is 38.4 AU from the Sun and 37.6 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 265 seconds.
The 1-sigma cross-track error in the shadow position is 2832 km.

The object has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 12.7 sec chord
Diameter=107.4 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 544430, (2029/01/14 20:38UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.0 +11:49:27  1.3  5.47 147
14Omi Leo      09:42:41.9 +09:45:32  3.5  1.53 152
PPM 126799     09:49:14.4 +10:14:57  7.7  0.18 151
PPM 126779     09:48:09.7 +10:15:12  9.4  0.09 151
544430         09:48:30.9 +10:17:04 16.8       151
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 544430, (2029/01/14 20:38UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  5.47 147
14Omi Leo      09:41:08.8 +09:53:31  3.5  1.53 152
PPM 126799     09:47:41.3 +10:23:06  7.7  0.18 151
PPM 126779     09:46:36.6 +10:23:20  9.4  0.09 151
544430         09:46:57.7 +10:25:12 16.8       151
Positions are for J2000

Event circumstances last updated at 2024/03/08 03:00:54 UT

Marc W. Buie, Southwest Research Institute

RECON