RECON: TNO occultation with 532092

Event between (532092) 13HU156 and star GA0860:05633158 with event index number of 2161334

Geocentric closest approach at 2028/06/28 20:27:52 UTC

J2000 position of star is 17:28:13.3 -02:25:22
Equinox of date position of star is 17:29:27.3 -02:26:26
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 43% illuminated.
Apparent brightness V=21.5

Object is 39.5 AU from the Sun and 38.5 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 77 seconds.
The 1-sigma cross-track error in the shadow position is 1407 km.

The object has an absolute magnitude Hv=5.5
Diameter=469.9 km assuming a 5% albedo -- 20.5 sec chord
Diameter=191.8 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 532092, (2028/06/28 20:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.6 -26:29:33  0.9 27.85  71
60Bet Oph      17:44:52.9 +04:33:26  2.8  7.96  89
PPM 180059     17:27:26.7 -01:40:28  6.4  0.96  84
PPM 200702     17:30:24.4 -02:33:15  9.9  0.21  85
532092         17:29:42.5 -02:26:39 17.0        85
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 532092, (2028/06/28 20:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.85  71
60Bet Oph      17:43:28.3 +04:34:06  2.8  7.96  89
PPM 180059     17:25:58.0 -01:39:05  6.4  0.96  84
PPM 200702     17:28:55.1 -02:32:00  9.9  0.21  85
532092         17:28:13.3 -02:25:22 17.0        85
Positions are for J2000

Event circumstances last updated at 2023/08/25 02:49:39 UT

Marc W. Buie, Southwest Research Institute

RECON