RECON: TNO occultation with 14UT114

Event between 14UT114 and star UC4-622-010942 with event index number of 163250

Geocentric closest approach at 2018/02/12 23:15:42 UTC

J2000 position of star is 03:27:40.9 +34:18:12
Equinox of date position of star is 03:28:46.8 +34:21:46
Stellar brightness R=16.5, use SENSEUP=128
Star is 124 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=21.2

TNO is 16.1 AU from the Sun and 16.0 AU from the Earth.
The TNO is moving 10.3 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 178 seconds.
The 1-sigma cross-track error in the shadow position is 1865 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 10.2 sec chord
Diameter=42.8 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14UT114, (2018/02/12 23:16UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.7 +16:32:40  0.8 23.46 138
44Zet Per      03:55:16.5 +31:56:10  2.8  6.04 129
PPM 068486     03:29:29.3 +33:52:09  5.6  0.51 124
PPM 068499     03:29:58.6 +35:52:06  8.0  1.52 124
PPM 068491     03:29:32.5 +34:25:45 10.0  0.16 124
14UT114        03:28:49.7 +34:21:55 16.5       124
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 14UT114, (2018/02/12 23:16UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 23.46 138
44Zet Per      03:54:07.9 +31:53:01  2.8  6.04 129
PPM 068486     03:28:20.7 +33:48:27  5.6  0.51 124
PPM 068499     03:28:49.0 +35:48:24  8.0  1.52 124
PPM 068491     03:28:23.6 +34:22:02 10.0  0.16 124
14UT114        03:27:40.9 +34:18:12 16.5       124
Positions are for J2000

Event circumstances last updated at 2017/05/17 18:01:29 UT

Marc W. Buie, Southwest Research Institute

RECON