RECON: TNO occultation with 523629

Event between (523629) 08SP266 and star GA0820:00145757 with event index number of 309226

Geocentric closest approach at 2019/07/27 22:47:30 UTC

J2000 position of star is 01:51:30.4 -06:58:41
Equinox of date position of star is 01:52:28.7 -06:52:57
Stellar brightness G=16.4, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=21.6

TNO is 36.1 AU from the Sun and 35.9 AU from the Earth.
The TNO is moving 9.3 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 268 seconds.
The 1-sigma cross-track error in the shadow position is 2715 km.

The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 42.6 sec chord
Diameter=162.5 km assuming a 30% albedo -- 17.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 523629, (2019/07/27 22:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.7 -29:31:05  1.2 46.66  94
68Omi Cet      02:20:20.2 -02:53:23  2.0  8.00  39
PPM 184124     02:01:25.2 -08:25:47  5.2  2.70  46
PPM 183940     01:52:36.5 -06:46:41  6.6  0.11  47
523629         01:52:29.1 -06:52:54 16.4        47
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 523629, (2019/07/27 22:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 46.66  94
68Omi Cet      02:19:20.8 -02:58:45  2.0  8.00  39
PPM 184124     02:00:27.0 -08:31:26  5.2  2.70  46
PPM 183940     01:51:37.8 -06:52:27  6.6  0.11  47
523629         01:51:30.4 -06:58:41 16.4        47
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:28:21 UT

Marc W. Buie, Southwest Research Institute

RECON