RECON: TNO occultation with 14FB72

Event between 14FB72 and star UC4-337-073042 with event index number of 135013

Geocentric closest approach at 2018/04/18 03:41:25 UTC

J2000 position of star is 15:11:56.1 -22:44:28
Equinox of date position of star is 15:12:54.3 -22:48:11
Stellar brightness R=16.2
Star is 170 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=21.5

TNO is 17.9 AU from the Sun and 17.0 AU from the Earth.
The TNO is moving 19.7 km/sec on the sky relative to the star, or, 5.8 arcsec/hr.
The 1-sigma error in the time of the event is 68 seconds.
The 1-sigma cross-track error in the shadow position is 708 km.

The TNO has an absolute magnitude Hv=8.9
Diameter=99.5 km assuming a 5% albedo -- 5.4 sec chord
Diameter=40.6 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14FB72, (2018/04/18 03:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.9 -26:28:16  0.9 17.98 163
7Del Sco       16:01:25.1 -22:40:21  2.3 11.16 170
PPM 264038     15:17:26.9 -22:27:57  5.5  1.08 171
PPM 263892     15:11:04.0 -22:47:23  8.2  0.45 170
PPM 263949     15:14:00.2 -22:47:48  9.6  0.23 170
14FB72         15:13:00.0 -22:48:33 16.2       170
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 14FB72, (2018/04/18 03:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 17.98 163
7Del Sco       16:00:20.0 -22:37:18  2.3 11.16 170
PPM 264038     15:16:23.0 -22:23:58  5.5  1.08 171
PPM 263892     15:10:00.2 -22:43:15  8.2  0.45 170
PPM 263949     15:12:56.3 -22:43:44  9.6  0.23 170
14FB72         15:11:56.1 -22:44:28 16.2       170
Positions are for J2000

Event circumstances last updated at 2016/09/07 16:26:05 UT

Marc W. Buie, Southwest Research Institute

RECON