RECON: TNO occultation with 472651

Event between (472651) 15DB216 and star GA0500:06914925 with event index number of 2311539

Geocentric closest approach at 2026/04/06 05:22:21 UTC

J2000 position of star is 13:57:18.1 -38:14:13
Equinox of date position of star is 13:58:46.1 -38:21:20
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 84% illuminated.
Apparent brightness V=19.8

Object is 13.1 AU from the Sun and 12.3 AU from the Earth.
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 8.6 arcsec/hr.
The 1-sigma error in the time of the event is 34 seconds.
The 1-sigma cross-track error in the shadow position is 893 km.

The object has an absolute magnitude Hv=8.5
Diameter=117.5 km assuming a 5% albedo -- 5.6 sec chord
Diameter=48.0 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 472651, (2026/04/06 05:22UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:05:42.1 -60:29:54  0.6 22.16  40
5The Cen       14:08:14.3 -36:29:52  2.1  2.63  26
PPM 319095     14:02:54.8 -40:20:52  5.8  2.13  28
PPM 292044     13:59:35.7 -38:17:45  7.9  0.16  28
PPM 292029     13:59:01.4 -38:12:59  9.6  0.15  28
472651         13:58:52.5 -38:21:51 16.6        28
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 472651, (2026/04/06 05:22UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:03:49.3 -60:22:23  0.6 22.16  40
5The Cen       14:06:39.9 -36:22:25  2.1  2.63  26
PPM 319095     14:01:19.0 -40:13:19  5.8  2.13  28
PPM 292044     13:58:01.3 -38:10:08  7.9  0.16  28
PPM 292029     13:57:27.0 -38:05:21  9.6  0.15  28
472651         13:57:18.1 -38:14:13 16.6        28
Positions are for J2000

Event circumstances last updated at 2024/06/18 21:26:09 UT

Marc W. Buie, Southwest Research Institute

RECON