RECON: TNO occultation with 523711

Event between (523711) 14JH80 and star GA0840:19606458 with event index number of 307609

Geocentric closest approach at 2020/08/07 18:57:20 UTC

J2000 position of star is 21:03:23.2 -04:24:04
Equinox of date position of star is 21:04:27.6 -04:19:08
Stellar brightness G=12.9, use SENSEUP=32
Star is 49 degrees from the moon. Moon is 84% illuminated.
TNO apparent brightness V=25.3

TNO is 34.1 AU from the Sun and 33.1 AU from the Earth.
The TNO is moving 25.8 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 2815 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=251.2 km assuming a 5% albedo -- 2.3 sec chord
Diameter=102.6 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 523711, (2020/08/07 18:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.1 -29:30:45  1.2 36.95  32
Tarazed        19:47:14.3 +10:39:53  2.7 24.37  69
11 Aqr         21:01:38.9 -04:38:58  6.2  0.78  49
PPM 204728     21:02:45.2 -04:02:58  7.1  0.50  49
PPM 204752     21:04:28.4 -04:33:10  9.2  0.23  49
523711         21:04:28.0 -04:19:07 12.9        48
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 523711, (2020/08/07 18:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 36.95  32
Tarazed        19:46:15.6 +10:36:48  2.7 24.37  69
11 Aqr         21:00:33.9 -04:43:52  6.2  0.78  49
PPM 204728     21:01:40.5 -04:07:53  7.1  0.50  49
PPM 204752     21:03:23.5 -04:38:06  9.2  0.23  49
523711         21:03:23.2 -04:24:04 12.9        49
Positions are for J2000

Event circumstances last updated at 2020/06/21 05:44:10 UT

Marc W. Buie, Southwest Research Institute

RECON