RECON: TNO occultation with 05JA175

Event between 05JA175 and star UC4-369-070347 with event index number of 152223

Geocentric closest approach at 2018/09/13 17:11:44 UTC

J2000 position of star is 15:24:07.6 -16:20:27
Equinox of date position of star is 15:25:06.3 -16:24:05
Stellar brightness R=11.3, use SENSEUP=8
Star is 10 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=22.7

TNO is 47.0 AU from the Sun and 47.4 AU from the Earth.
The TNO is moving 18.2 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 608 seconds.
The 1-sigma cross-track error in the shadow position is 3063 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=420.7 km assuming a 5% albedo -- 23.1 sec chord
Diameter=171.8 km assuming a 30% albedo -- 9.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 05JA175, (2018/09/13 17:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.4 -26:28:19  0.9 18.21  29
27Bet Lib      15:18:01.0 -09:27:03  2.6  7.17   7
32Zet1Lib      15:29:18.9 -16:46:50  5.6  1.06  11
PPM 230166     15:24:34.2 -16:37:47  7.6  0.27  10
PPM 230167     15:24:34.3 -16:23:22  9.5  0.15  10
05JA175        15:25:10.8 -16:24:22 11.3        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 05JA175, (2018/09/13 17:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.21  29
27Bet Lib      15:17:00.3 -09:22:59  2.6  7.17   7
32Zet1Lib      15:28:15.4 -16:43:00  5.6  1.06  11
PPM 230166     15:23:30.9 -16:33:51  7.6  0.27  10
PPM 230167     15:23:31.1 -16:19:27  9.5  0.15  10
05JA175        15:24:07.6 -16:20:27 11.3        10
Positions are for J2000

Event circumstances last updated at 2017/05/14 18:43:02 UT

Marc W. Buie, Southwest Research Institute

RECON