RECON: TNO occultation with 471136

Event between (471136) 10EO65 and star GA0620:42088454 with event index number of 2269865

Geocentric closest approach at 2024/08/03 11:12:24 UTC

J2000 position of star is 19:34:25.4 -26:33:27
Equinox of date position of star is 19:35:55.5 -26:30:09
Stellar brightness G=11.8, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 171 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=22.0

Object is 17.0 AU from the Sun and 16.1 AU from the Earth.
Apparent velocity is 19.8 km/sec on the sky relative to the star, or, 6.1 arcsec/hr.
The 1-sigma error in the time of the event is 461 seconds.
The 1-sigma cross-track error in the shadow position is 3306 km.

The object has an absolute magnitude Hv=9.7
Diameter=75.9 km assuming a 5% albedo -- 3.6 sec chord
Diameter=31.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 471136, (2024/08/03 11:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.2 -26:29:04  0.9 41.16 130
38Zet Sgr      19:04:10.4 -29:50:34  2.7  7.75 164
PPM 269861     19:31:23.4 -26:56:01  4.9  1.10 170
PPM 269979     19:35:55.9 -27:05:50  8.4  0.60 171
PPM 269999     19:36:58.4 -26:42:36  9.2  0.31 171
471136         19:35:56.0 -26:30:08 11.8       171
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 471136, (2024/08/03 11:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 41.16 130
38Zet Sgr      19:02:36.7 -29:52:49  2.7  7.75 164
PPM 269861     19:29:52.4 -26:59:11  4.9  1.10 170
PPM 269979     19:34:24.8 -27:09:09  8.4  0.60 171
PPM 269999     19:35:27.7 -26:45:57  9.2  0.31 171
471136         19:34:25.4 -26:33:27 11.8       171
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:49:28 UT

Marc W. Buie, Southwest Research Institute

RECON