RECON: TNO occultation with 05JH177

Event between 05JH177 and star GA0740:05367402 with event index number of 174702

Geocentric closest approach at 2019/02/01 22:59:00 UTC

J2000 position of star is 15:08:17.0 -14:25:07
Equinox of date position of star is 15:09:19.6 -14:29:23
Stellar brightness G=13.9, use SENSEUP=64
Star is 52 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=23.2

TNO is 41.6 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 8.4 km/sec on the sky relative to the star, or, 1.0 arcsec/hr.
The 1-sigma error in the time of the event is 1637 seconds.
The 1-sigma cross-track error in the shadow position is 5970 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=255.9 km assuming a 5% albedo -- 30.6 sec chord
Diameter=104.5 km assuming a 30% albedo -- 12.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 05JH177, (2019/02/01 22:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:34.8 -26:28:22  0.9 22.43  32
27Bet Lib      15:18:02.2 -09:27:08  2.6  5.47  52
21Nu Lib       15:07:41.7 -16:19:47  5.2  1.88  52
PPM 229794     15:09:02.1 -14:39:53  8.3  0.19  52
PPM 229789     15:08:48.9 -14:22:22  9.5  0.17  53
05JH177        15:09:20.5 -14:29:27 13.9        52
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 05JH177, (2019/02/01 22:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.43  32
27Bet Lib      15:17:00.3 -09:22:59  2.6  5.47  52
21Nu Lib       15:06:37.6 -16:15:25  5.2  1.88  52
PPM 229794     15:07:58.5 -14:35:33  8.3  0.19  52
PPM 229789     15:07:45.5 -14:18:02  9.5  0.17  53
05JH177        15:08:17.0 -14:25:07 13.9        52
Positions are for J2000

Event circumstances last updated at 2018/10/23 20:53:46 UT

Marc W. Buie, Southwest Research Institute

RECON