RECON: TNO occultation with 134340

Event between (134340) Pluto and star GA0660:38424530 with event index number of 2038818

Geocentric closest approach at 2023/06/03 07:21:09 UTC

J2000 position of star is 20:10:14.4 -22:43:08
Equinox of date position of star is 20:11:37.4 -22:38:54
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 58 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=15.1

Object is 34.8 AU from the Sun and 34.1 AU from the Earth.
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1238 km.

The object has an absolute magnitude Hv=-0.4
Diameter=7379.3 km assuming a 5% albedo -- 499.6 sec chord
Diameter=3012.6 km assuming a 30% albedo -- 204.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 134340, (2023/06/03 07:21UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:56.3 -29:29:51  1.2 37.99  91
38Zet Sgr      19:04:06.0 -29:50:41  2.7 16.74  42
4 Cap          20:19:23.7 -21:44:09  5.9  2.02  60
PPM 270853     20:14:16.8 -22:55:13  8.2  0.67  59
PPM 270754     20:10:43.0 -22:48:10  9.3  0.26  58
134340         20:11:37.4 -22:38:54 16.7        59
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 134340, (2023/06/03 07:21UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 37.99  91
38Zet Sgr      19:02:36.7 -29:52:49  2.7 16.74  42
4 Cap          20:18:01.4 -21:48:36  5.9  2.02  60
PPM 270853     20:12:53.7 -22:59:31  8.2  0.67  59
PPM 270754     20:09:19.8 -22:52:22  9.3  0.26  58
134340         20:10:14.4 -22:43:08 16.7        58
Positions are for J2000

Event circumstances last updated at 2023/05/28 03:39:14 UT

Marc W. Buie, Southwest Research Institute

RECON