RECON: TNO occultation with 14UO224

Event between 14UO224 and star UC4-560-016606 with event index number of 140570

Geocentric closest approach at 2017/12/11 16:40:23 UTC

J2000 position of star is 05:30:02.0 +21:58:46
Equinox of date position of star is 05:31:02.2 +21:59:29
Stellar brightness R=14.8
Star is 103 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=21.5

TNO is 38.2 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 832 seconds.
The 1-sigma cross-track error in the shadow position is 3119 km.

The TNO has an absolute magnitude Hv=5.7
Diameter=440.6 km assuming a 5% albedo -- 17.5 sec chord
Diameter=179.9 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14UO224, (2017/12/11 16:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.1 +16:32:38  0.8 13.89 117
Alnath         05:27:25.7 +28:37:16  1.6  6.68 103
114 Tau        05:28:42.8 +21:57:03  4.7  0.56 104
PPM 094431     05:31:48.4 +22:28:29  7.2  0.51 103
PPM 094430     05:31:45.6 +22:23:07  9.6  0.42 103
14UO224        05:31:06.7 +21:59:32 14.8       103
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 14UO224, (2017/12/11 16:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.89 117
Alnath         05:26:17.5 +28:36:24  1.6  6.68 103
114 Tau        05:27:38.1 +21:56:13  4.7  0.56 104
PPM 094431     05:30:43.4 +22:27:44  7.2  0.51 103
PPM 094430     05:30:40.7 +22:22:22  9.6  0.42 103
14UO224        05:30:02.0 +21:58:46 14.8       103
Positions are for J2000

Event circumstances last updated at 2016/09/03 18:14:51 UT

Marc W. Buie, Southwest Research Institute

RECON