RECON: TNO occultation with 310071

Event between (310071) 10KR59 and star GA0600:08473379 with event index number of 2187030

Geocentric closest approach at 2024/08/27 17:31:24 UTC

J2000 position of star is 16:12:04.0 -29:00:15
Equinox of date position of star is 16:13:34.3 -29:03:54
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 36% illuminated.
Apparent brightness V=21.4

Object is 21.4 AU from the Sun and 21.4 AU from the Earth.
Apparent velocity is 5.9 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 180 seconds.
The 1-sigma cross-track error in the shadow position is 875 km.

The object has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 27.8 sec chord
Diameter=66.8 km assuming a 30% albedo -- 11.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 310071, (2024/08/27 17:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.4 -26:29:04  0.9  4.62 168
23Tau Sco      16:37:25.3 -28:15:54  2.8  5.29 170
PPM 265228     16:12:34.3 -29:28:45  5.2  0.47 164
PPM 265274     16:15:10.4 -29:07:05  7.9  0.35 165
PPM 265253     16:13:49.9 -29:03:45  8.9  0.05 165
310071         16:13:36.1 -29:03:58 16.8       165
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, (2024/08/27 17:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  4.62 168
23Tau Sco      16:35:52.9 -28:12:58  2.8  5.29 170
PPM 265228     16:11:01.9 -29:25:00  5.2  0.47 164
PPM 265274     16:13:38.1 -29:03:25  7.9  0.35 165
PPM 265253     16:12:17.7 -29:00:02  8.9  0.05 165
310071         16:12:04.0 -29:00:15 16.8       165
Positions are for J2000

Event circumstances last updated at 2024/03/04 05:28:23 UT

Marc W. Buie, Southwest Research Institute

RECON