RECON: TNO occultation with 14UU224

Event between 14UU224 and star GA0960:00513157 with event index number of 150427

Geocentric closest approach at 2018/08/17 02:05:15 UTC

J2000 position of star is 04:47:58.6 +07:17:26
Equinox of date position of star is 04:48:58.3 +07:19:20
Stellar brightness G=12.1, use SENSEUP=16
Star is 147 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=22.1

TNO is 30.6 AU from the Sun and 30.9 AU from the Earth.
The TNO is moving 16.3 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 344 seconds.
The 1-sigma cross-track error in the shadow position is 3104 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=243.2 km assuming a 5% albedo -- 14.9 sec chord
Diameter=99.3 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14UU224, (2018/08/17 02:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:59.5 +16:32:43  0.8  9.68 150
Bellatrix      05:26:07.9 +06:21:54  1.6  9.27 138
1Pi 3Ori       04:50:51.2 +06:59:32  3.2  0.57 147
PPM 148050     04:51:51.2 +08:01:29  8.0  1.00 146
PPM 147949     04:47:28.5 +07:22:35  8.8  0.38 147
PPM 147976     04:48:48.7 +07:14:06 10.3  0.10 147
14UU224        04:48:58.9 +07:19:21 12.1       147
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 14UU224, (2018/08/17 02:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.68 150
Bellatrix      05:25:07.8 +06:20:58  1.6  9.27 138
1Pi 3Ori       04:49:51.0 +06:57:41  3.2  0.57 147
PPM 148050     04:50:50.6 +07:59:39  8.0  1.00 146
PPM 147949     04:46:28.2 +07:20:38  8.8  0.38 147
PPM 147976     04:47:48.5 +07:12:11 10.3  0.10 147
14UU224        04:47:58.6 +07:17:26 12.1       147
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:20:14 UT

Marc W. Buie, Southwest Research Institute

RECON