RECON: TNO occultation with 533210

Event between (533210) 14DT143 and star GA0800:04836933 with event index number of 2348541

Geocentric closest approach at 2026/09/07 11:37:22 UTC

J2000 position of star is 15:39:19.3 -09:27:48
Equinox of date position of star is 15:40:35.6 -09:32:17
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 117 degrees from the moon. Moon is 17% illuminated.
Apparent brightness V=22.7

Object is 36.4 AU from the Sun and 36.8 AU from the Earth.
Apparent velocity is 16.3 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 272 seconds.
The 1-sigma cross-track error in the shadow position is 1750 km.

The object has an absolute magnitude Hv=6.9
Diameter=243.2 km assuming a 5% albedo -- 15.1 sec chord
Diameter=99.3 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 533210, (2026/09/07 11:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:02.9 -26:29:20  0.9 20.70 133
27Bet Lib      15:18:26.8 -09:28:47  2.6  5.50 112
PPM 198725     15:35:53.2 -09:16:17  5.6  1.24 116
PPM 198839     15:41:10.8 -09:42:16  8.4  0.19 117
PPM 198829     15:40:51.4 -09:22:04  9.5  0.18 117
533210         15:40:46.3 -09:32:54 16.3       117
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 533210, (2026/09/07 11:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.70 133
27Bet Lib      15:17:00.3 -09:22:59  2.6  5.50 112
PPM 198725     15:34:26.4 -09:11:01  5.6  1.24 116
PPM 198839     15:39:43.7 -09:37:10  8.4  0.19 117
PPM 198829     15:39:24.5 -09:16:58  9.5  0.18 117
533210         15:39:19.3 -09:27:48 16.3       117
Positions are for J2000

Event circumstances last updated at 2023/05/29 02:46:37 UT

Marc W. Buie, Southwest Research Institute

RECON