RECON: TNO occultation with 469707

Event between (469707) 05GB187 and star GA0760:06329869 with event index number of 1288259

Geocentric closest approach at 2024/05/14 23:26:44 UTC

J2000 position of star is 16:59:50.1 -13:20:33
Equinox of date position of star is 17:01:07.2 -13:22:31
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 45% illuminated.
TNO apparent brightness V=22.3

TNO is 32.3 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is 1203 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 9.7 sec chord
Diameter=87.7 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469707, (2024/05/14 23:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.3 -26:29:02  0.9 14.91 111
35Eta Oph      17:11:46.7 -15:45:12  2.6  3.49 118
PPM 232375     16:58:47.0 -11:00:00  6.3  2.45 114
PPM 232473     17:02:33.3 -13:36:11  7.4  0.40 115
PPM 232407     16:59:45.5 -13:24:53  9.2  0.35 115
469707         17:01:12.5 -13:22:39 15.2       115
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 469707, (2024/05/14 23:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.91 111
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.49 118
PPM 232375     16:57:26.0 -10:57:50  6.3  2.45 114
PPM 232473     17:01:10.7 -13:34:08  7.4  0.40 115
PPM 232407     16:58:23.1 -13:22:44  9.2  0.35 115
469707         16:59:50.1 -13:20:33 15.2       115
Positions are for J2000

Event circumstances last updated at 2022/10/12 04:24:06 UT

Marc W. Buie, Southwest Research Institute

RECON