RECON: TNO occultation with 09KN30

Event between 09KN30 and star GA0660:36591093 with event index number of 2074144

Geocentric closest approach at 2024/03/10 08:42:12 UTC

J2000 position of star is 19:03:25.3 -22:46:08
Equinox of date position of star is 19:04:51.4 -22:43:56
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 66 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=23.5

Object is 35.4 AU from the Sun and 35.8 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 797 seconds.
The 1-sigma cross-track error in the shadow position is 5376 km.

The object has an absolute magnitude Hv=7.8
Diameter=164.4 km assuming a 5% albedo -- 8.8 sec chord
Diameter=67.1 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 
 
 

Star training set for 09KN30, (2024/03/10 08:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:53.7 -26:29:01  0.9 35.07 100
Nunki          18:56:45.8 -26:15:52  2.0  3.99  68
PPM 269213     19:03:05.2 -22:39:33  6.2  0.42  66
PPM 269252     19:05:11.1 -22:40:29  8.2  0.09  65
09KN30         19:04:52.7 -22:43:54 16.8        65
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 09KN30, (2024/03/10 08:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.07 100
Nunki          18:55:15.9 -26:17:49  2.0  3.99  68
PPM 269213     19:01:37.8 -22:41:43  6.2  0.42  66
PPM 269252     19:03:43.7 -22:42:44  8.2  0.09  65
09KN30         19:03:25.3 -22:46:08 16.8        65
Positions are for J2000

Event circumstances last updated at 2023/11/04 04:09:53 UT

Marc W. Buie, Southwest Research Institute

RECON