RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star GA0820:17739033 with event index number of 1910805

Geocentric closest approach at 2028/06/09 21:29:14 UTC

J2000 position of star is 19:02:37.6 -06:26:55
Equinox of date position of star is 19:03:56.4 -06:24:41
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 17 degrees from the moon. Moon is 93% illuminated.
Apparent brightness V=22.3

Object is 28.5 AU from the Sun and 27.6 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 484 seconds.
The 1-sigma cross-track error in the shadow position is 2676 km.

The object has an absolute magnitude Hv=7.7
Diameter=199.5 km assuming a 5% albedo -- 8.5 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469362, (2028/06/09 21:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.4 -26:29:33  0.9 41.56  41
Nunki          18:57:01.6 -26:15:31  2.0 19.93   9
12 Aql         19:03:11.9 -05:41:49  3.9  0.75  18
PPM 202443     19:03:20.9 -06:20:13  8.4  0.21  17
PPM 202464     19:04:13.0 -06:25:29  9.1  0.03  17
469362         19:04:09.2 -06:24:19 16.5        17
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, (2028/06/09 21:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 41.56  41
Nunki          18:55:15.9 -26:17:49  2.0 19.93   9
12 Aql         19:01:40.8 -05:44:22  3.9  0.75  18
PPM 202443     19:01:49.4 -06:22:46  8.4  0.21  17
PPM 202464     19:02:41.5 -06:28:05  9.1  0.03  17
469362         19:02:37.6 -06:26:55 16.5        17
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:42 UT

Marc W. Buie, Southwest Research Institute

RECON