RECON: TNO occultation with 310071

Event between (310071) 10KR59 and star GA0600:08528657 with event index number of 2187020

Geocentric closest approach at 2024/07/13 13:21:43 UTC

J2000 position of star is 16:13:38.1 -29:10:59
Equinox of date position of star is 16:15:08.7 -29:14:34
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 50 degrees from the moon. Moon is 46% illuminated.
Apparent brightness V=21.2

Object is 21.3 AU from the Sun and 20.6 AU from the Earth.
Apparent velocity is 14.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 865 km.

The object has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 11.1 sec chord
Diameter=66.8 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 310071, (2024/07/13 13:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.9 -26:29:03  0.9  4.44  53
23Tau Sco      16:37:24.8 -28:15:53  2.8  4.97  54
PPM 265228     16:12:33.8 -29:28:44  5.2  0.61  49
PPM 265274     16:15:09.9 -29:07:04  7.9  0.13  50
310071         16:15:10.0 -29:14:37 16.2        50
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 310071, (2024/07/13 13:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  4.44  53
23Tau Sco      16:35:52.9 -28:12:58  2.8  4.97  54
PPM 265228     16:11:01.9 -29:25:00  5.2  0.61  49
PPM 265274     16:13:38.1 -29:03:25  7.9  0.13  50
310071         16:13:38.1 -29:10:59 16.2        50
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:28:18 UT

Marc W. Buie, Southwest Research Institute

RECON