RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star GA0820:11900501 with event index number of 1752634

Geocentric closest approach at 2027/09/02 20:02:33 UTC

J2000 position of star is 18:44:00.4 -07:24:21
Equinox of date position of star is 18:45:19.8 -07:22:46
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 93 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=22.4

Object is 28.4 AU from the Sun and 27.9 AU from the Earth.
Apparent velocity is 10.6 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 599 seconds.
The 1-sigma cross-track error in the shadow position is 4866 km.

The object has an absolute magnitude Hv=7.7
Diameter=199.5 km assuming a 5% albedo -- 16.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469362, (2027/09/02 20:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.5 -26:29:27  0.9 37.20  61
Nunki          18:56:58.7 -26:15:35  2.0 19.08  93
PPM 202054     18:44:05.7 -07:02:41  6.5  0.48  93
PPM 202092     18:46:03.0 -07:04:49  8.4  0.33  94
PPM 202088     18:45:57.8 -07:35:18  8.7  0.24  93
469362         18:45:30.2 -07:22:33 16.4        94
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 469362, (2027/09/02 20:03UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.20  61
Nunki          18:55:15.9 -26:17:49  2.0 19.08  93
PPM 202054     18:42:36.1 -07:04:26  6.5  0.48  93
PPM 202092     18:44:33.4 -07:06:38  8.4  0.33  94
PPM 202088     18:44:27.9 -07:37:06  8.7  0.24  93
469362         18:44:00.4 -07:24:21 16.4        93
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:28:24 UT

Marc W. Buie, Southwest Research Institute

RECON