RECON: TNO occultation with 545293

Event between (545293) 11FX62 and star GA0560:08429974 with event index number of 2398242

Geocentric closest approach at 2026/01/26 16:25:54 UTC

J2000 position of star is 15:54:18.6 -33:52:36
Equinox of date position of star is 15:55:48.9 -33:56:40
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon. Moon is 56% illuminated.
Apparent brightness V=22.0

Object is 28.9 AU from the Sun and 29.4 AU from the Earth.
Apparent velocity is 20.2 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 147 seconds.
The 1-sigma cross-track error in the shadow position is 1761 km.

The object has an absolute magnitude Hv=7.2
Diameter=219.8 km assuming a 5% albedo -- 10.9 sec chord
Diameter=89.7 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 545293, (2026/01/26 16:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:00.6 -26:29:15  0.9 10.62 153
Eta Lup        16:01:51.5 -38:28:07  2.8  4.67 154
PPM 294249     15:48:24.5 -34:45:42  5.8  1.76 159
PPM 294358     15:53:54.0 -34:11:55  7.8  0.50 158
PPM 294398     15:56:01.4 -34:08:08  9.1  0.18 158
545293         15:55:58.8 -33:57:06 16.4       158
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 545293, (2026/01/26 16:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.62 153
Eta Lup        16:00:07.3 -38:23:48  2.8  4.67 154
PPM 294249     15:46:44.1 -34:40:57  5.8  1.76 159
PPM 294358     15:52:13.8 -34:07:21  7.8  0.50 158
PPM 294398     15:54:21.0 -34:03:38  9.1  0.18 158
545293         15:54:18.6 -33:52:36 16.4       158
Positions are for J2000

Event circumstances last updated at 2023/07/05 02:41:17 UT

Marc W. Buie, Southwest Research Institute

RECON