RECON: TNO occultation with 523730

Event between (523730) 14OH394 and star GA0740:28840482 with event index number of 306361

Geocentric closest approach at 2019/08/12 14:40:38 UTC

J2000 position of star is 20:36:24.6 -15:28:51
Equinox of date position of star is 20:37:29.9 -15:24:45
Stellar brightness G=17.0, use SENSEUP=128
Star is 20 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=22.2

TNO is 41.1 AU from the Sun and 40.1 AU from the Earth.
The TNO is moving 23.9 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 123 seconds.
The 1-sigma cross-track error in the shadow position is 1840 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=363.1 km assuming a 5% albedo -- 15.2 sec chord
Diameter=148.2 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 523730, (2019/08/12 14:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.8 -29:31:04  1.2 35.36  50
38Zet Sgr      19:03:51.5 -29:51:02  2.7 25.90   8
PPM 237641     20:36:38.7 -16:27:26  6.4  1.07  20
PPM 237659     20:37:24.3 -15:14:32  8.3  0.17  20
PPM 237660     20:37:24.4 -15:21:48  9.5  0.05  20
523730         20:37:30.5 -15:24:43 17.0        21
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 523730, (2019/08/12 14:41UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 35.36  50
38Zet Sgr      19:02:36.7 -29:52:49  2.7 25.90   8
PPM 237641     20:35:32.4 -16:31:33  6.4  1.07  20
PPM 237659     20:36:18.4 -15:18:41  8.3  0.17  20
PPM 237660     20:36:18.5 -15:25:56  9.5  0.05  20
523730         20:36:24.6 -15:28:51 17.0        20
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:31:56 UT

Marc W. Buie, Southwest Research Institute

RECON