RECON: TNO occultation with 10BK118

Event between 10BK118 and star GA0420:09649805 with event index number of 2078012

Geocentric closest approach at 2024/06/27 09:36:39 UTC

J2000 position of star is 14:13:29.6 -46:58:56
Equinox of date position of star is 14:15:01.9 -47:05:34
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 113 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=24.3

Object is 24.8 AU from the Sun and 24.2 AU from the Earth.
Apparent velocity is 26.7 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 88 seconds.
The 1-sigma cross-track error in the shadow position is 2630 km.

The object has an absolute magnitude Hv=10.2
Diameter=55.2 km assuming a 5% albedo -- 2.1 sec chord
Diameter=22.5 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10BK118, (2024/06/27 09:37UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:05:34.5 -60:29:23  0.6 13.47 104
Zet Cen        13:57:04.8 -47:24:28  2.5  3.07 115
Iot Lup        14:20:59.0 -46:10:11  4.1  1.37 112
PPM 319269     14:12:32.6 -47:01:30  7.5  0.44 113
PPM 319339     14:16:57.4 -47:21:02  9.2  0.41 112
PPM 319303     14:15:01.6 -46:44:46 10.2  0.35 113
10BK118        14:15:04.4 -47:05:44 14.9       112
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 10BK118, (2024/06/27 09:37UT)
Object            RA         Dec     mag  sep  mel
Hadar          14:03:49.3 -60:22:23  0.6 13.47 104
Zet Cen        13:55:32.3 -47:17:19  2.5  3.07 115
Iot Lup        14:19:24.2 -46:03:30  4.1  1.37 112
PPM 319269     14:10:58.2 -46:54:38  7.5  0.44 113
PPM 319339     14:15:22.2 -47:14:15  9.2  0.41 112
PPM 319303     14:13:27.1 -46:37:57 10.2  0.35 113
10BK118        14:13:29.6 -46:58:56 14.9       112
Positions are for J2000

Event circumstances last updated at 2023/11/07 05:29:26 UT

Marc W. Buie, Southwest Research Institute

RECON