RECON: TNO occultation with 556067

Event between (556067) 14JK80 and star GA0860:05558185 with event index number of 2488264

Geocentric closest approach at 2027/09/26 12:06:37 UTC

J2000 position of star is 17:24:25.7 -03:55:48
Equinox of date position of star is 17:25:40.6 -03:57:00
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 125 degrees from the moon. Moon is 17% illuminated.
Apparent brightness V=21.7

Object is 33.5 AU from the Sun and 33.6 AU from the Earth.
Apparent velocity is 15.7 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 135 seconds.
The 1-sigma cross-track error in the shadow position is 1866 km.

The object has an absolute magnitude Hv=6.3
Diameter=319.2 km assuming a 5% albedo -- 20.7 sec chord
Diameter=130.3 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 556067, (2027/09/26 12:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.8 -26:29:28  0.9 26.07 116
60Bet Oph      17:44:50.6 +04:33:27  2.8  9.74 126
PPM 200658     17:28:06.3 -05:06:32  4.5  1.28 125
PPM 200613     17:24:54.3 -03:08:46  8.0  0.84 124
PPM 200628     17:25:56.3 -03:55:12  9.4  0.04 124
556067         17:25:53.6 -03:57:12 11.8       125
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 556067, (2027/09/26 12:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.07 116
60Bet Oph      17:43:28.3 +04:34:06  2.8  9.74 126
PPM 200658     17:26:37.7 -05:05:13  4.5  1.28 125
PPM 200613     17:23:27.0 -03:07:20  8.0  0.84 124
PPM 200628     17:24:28.5 -03:53:48  9.4  0.04 124
556067         17:24:25.7 -03:55:48 11.8       124
Positions are for J2000

Event circumstances last updated at 2023/08/20 02:45:16 UT

Marc W. Buie, Southwest Research Institute

RECON