RECON: TNO occultation with 310071

Event between (310071) 10KR59 and star GA0540:19061925 with event index number of 2800100

Geocentric closest approach at 2029/07/15 00:47:36 UTC

J2000 position of star is 17:22:14.1 -35:37:54
Equinox of date position of star is 17:23:51.4 -35:39:11
Stellar brightness G=12.9, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 105 degrees from the moon. Moon is 14% illuminated.
Apparent brightness V=21.9

Object is 25.2 AU from the Sun and 24.3 AU from the Earth.
Apparent velocity is 20.1 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 114 seconds.
The 1-sigma cross-track error in the shadow position is 1200 km.

The object has an absolute magnitude Hv=7.8
Diameter=163.7 km assuming a 5% albedo -- 8.1 sec chord
Diameter=66.8 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 310071, (2029/07/15 00:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.4 -26:29:41  0.9 14.56  94
34Ups Sco      17:32:46.5 -37:18:58  2.7  2.39 106
PPM 296259     17:24:37.1 -35:56:10  6.4  0.29 105
PPM 296258     17:24:32.5 -35:24:31  8.2  0.26 105
PPM 296239     17:23:25.3 -35:37:41  8.9  0.16 105
310071         17:24:12.9 -35:39:28 12.9       105
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, (2029/07/15 00:48UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.56  94
34Ups Sco      17:30:45.8 -37:17:46  2.7  2.39 106
PPM 296259     17:22:38.1 -35:54:37  6.4  0.29 105
PPM 296258     17:22:34.0 -35:22:57  8.2  0.26 105
PPM 296239     17:21:26.6 -35:36:04  8.9  0.16 105
310071         17:22:14.1 -35:37:54 12.9       105
Positions are for J2000

Event circumstances last updated at 2024/03/08 03:40:39 UT

Marc W. Buie, Southwest Research Institute

RECON