RECON: TNO occultation with 523696

Event between (523696) 14GW53 and star GA0720:05505388 with event index number of 2334778

Geocentric closest approach at 2028/04/15 04:33:57 UTC

J2000 position of star is 15:24:17.6 -17:39:47
Equinox of date position of star is 15:25:41.0 -17:44:54
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 46 degrees from the moon. Moon is 65% illuminated.
Apparent brightness V=21.6

Object is 39.4 AU from the Sun and 38.5 AU from the Earth.
Apparent velocity is 21.6 km/sec on the sky relative to the star, or, 2.8 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 1797 km.

The object has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 21.7 sec chord
Diameter=188.3 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 523696, (2028/04/15 04:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:08.8 -26:29:32  0.9 17.43  29
27Bet Lib      15:18:32.0 -09:29:08  2.6  8.47  50
28 Lib         15:22:30.2 -18:15:33  6.4  0.95  46
PPM 230220     15:27:01.9 -17:11:32  8.4  0.63  46
PPM 230183     15:25:38.6 -17:50:40  9.4  0.10  46
523696         15:25:54.0 -17:45:42 14.1        45
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 523696, (2028/04/15 04:30UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.43  29
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.47  50
28 Lib         15:20:53.7 -18:09:32  6.4  0.95  46
PPM 230220     15:25:25.8 -17:05:39  8.4  0.63  46
PPM 230183     15:24:02.2 -17:44:45  9.4  0.10  46
523696         15:24:17.6 -17:39:47 14.1        46
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:31:06 UT

Marc W. Buie, Southwest Research Institute

RECON