RECON: TNO occultation with 534626

Event between (534626) 14UT224 and star GA1120:01512767 with event index number of 2226620

Geocentric closest approach at 2028/10/22 16:44:30 UTC

J2000 position of star is 05:50:41.5 +23:44:51
Equinox of date position of star is 05:52:11.2 +23:45:09
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 177 degrees from the moon. Moon is 26% illuminated.
Apparent brightness V=22.5

Object is 36.6 AU from the Sun and 36.1 AU from the Earth.
Apparent velocity is 10.7 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 809 seconds.
The 1-sigma cross-track error in the shadow position is 1538 km.

The object has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 26.3 sec chord
Diameter=114.5 km assuming a 30% albedo -- 10.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 534626, (2028/10/22 16:45UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:43.9 +07:24:36  0.4 16.38 162
Alnath         05:28:06.9 +28:37:45  1.6  7.32 171
132 Tau        05:50:47.1 +24:34:28  4.9  0.90 177
PPM 095035     05:55:19.6 +24:17:27  8.1  0.85 178
PPM 094976     05:52:57.4 +23:52:41 10.0  0.17 177
534626         05:52:27.0 +23:45:12 16.5       178
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 534626, (2028/10/22 16:45UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.38 162
Alnath         05:26:17.6 +28:36:23  1.6  7.32 171
132 Tau        05:49:00.9 +24:34:02  4.9  0.90 177
PPM 095035     05:53:33.6 +24:17:13  8.1  0.85 178
PPM 094976     05:51:11.8 +23:52:21 10.0  0.17 177
534626         05:50:41.5 +23:44:51 16.5       177
Positions are for J2000

Event circumstances last updated at 2024/06/25 21:30:22 UT

Marc W. Buie, Southwest Research Institute

RECON