RECON: TNO occultation with 14JE80

Event between 14JE80 and star UC4-421-072807 with event index number of 207252

Geocentric closest approach at 2018/03/25 05:49:32 UTC

J2000 position of star is 17:37:01.8 -05:49:46
Equinox of date position of star is 17:37:58.3 -05:50:20
Stellar brightness R=16.5, use SENSEUP=128
Star is 157 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=22.4

TNO is 18.0 AU from the Sun and 17.8 AU from the Earth.
The TNO is moving 6.4 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 567 seconds.
The 1-sigma cross-track error in the shadow position is 5508 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=73.1 km assuming a 5% albedo -- 11.5 sec chord
Diameter=29.8 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14JE80, (2018/03/25 05:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.7 -26:28:15  0.9 26.16 147
60Bet Oph      17:44:22.4 +04:33:39  2.8 10.52 150
PPM 200792     17:34:28.3 -05:45:24  5.6  0.88 156
PPM 200831     17:36:28.6 -05:56:32  8.4  0.39 156
PPM 200884     17:38:57.1 -05:35:40 10.4  0.34 157
14JE80         17:38:00.4 -05:50:21 16.5       157
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 14JE80, (2018/03/25 05:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.16 147
60Bet Oph      17:43:28.3 +04:34:05  2.8 10.52 150
PPM 200792     17:33:29.8 -05:44:43  5.6  0.88 156
PPM 200831     17:35:30.1 -05:55:54  8.4  0.39 156
PPM 200884     17:37:58.6 -05:35:06 10.4  0.34 157
14JE80         17:37:01.8 -05:49:46 16.5       157
Positions are for J2000

Event circumstances last updated at 2017/08/01 16:35:48 UT

Marc W. Buie, Southwest Research Institute

RECON