RECON: TNO occultation with 14JQ80

Event between 14JQ80 and star GA0760:05443741 with event index number of 256196

Geocentric closest approach at 2018/05/29 19:41:18 UTC

J2000 position of star is 15:55:44.2 -13:55:30
Equinox of date position of star is 15:56:46.2 -13:58:40
Stellar brightness G=16.1, use SENSEUP=128
Star is 11 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=22.3

TNO is 31.8 AU from the Sun and 30.8 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 168 seconds.
The 1-sigma cross-track error in the shadow position is 2365 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 8.8 sec chord
Diameter=84.1 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14JQ80, (2018/05/29 19:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.3 -26:28:17  0.9 14.78   9
8Bet1Sco       16:06:30.6 -19:51:16  2.6  6.32   8
PPM 230971     15:57:35.7 -14:52:55  6.4  0.93  11
PPM 230978     15:57:47.1 -13:37:41  7.8  0.43  11
PPM 230942     15:56:06.4 -13:55:34  8.9  0.17  11
14JQ80         15:56:46.1 -13:58:39 16.1        11
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 14JQ80, (2018/05/29 19:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.78   9
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.32   8
PPM 230971     15:56:33.4 -14:49:47  6.4  0.93  11
PPM 230978     15:56:45.4 -13:34:33  7.8  0.43  11
PPM 230942     15:55:04.6 -13:52:23  8.9  0.17  11
14JQ80         15:55:44.2 -13:55:30 16.1        11
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:04:06 UT

Marc W. Buie, Southwest Research Institute

RECON