RECON: TNO occultation with 14UO224

Event between 14UO224 and star UC4-559-016904 with event index number of 179096

Geocentric closest approach at 2019/02/06 20:42:35 UTC

J2000 position of star is 05:32:23.8 +21:47:06
Equinox of date position of star is 05:33:25.4 +21:47:47
Stellar brightness R=15.2, use SENSEUP=128
Star is 104 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=21.6

TNO is 38.1 AU from the Sun and 37.5 AU from the Earth.
The TNO is moving 13.0 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 2245 seconds.
The 1-sigma cross-track error in the shadow position is 3508 km.

The TNO has an absolute magnitude Hv=5.7
Diameter=440.6 km assuming a 5% albedo -- 33.8 sec chord
Diameter=179.9 km assuming a 30% albedo -- 13.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14UO224, (2019/02/06 20:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.1 +16:32:47  0.8 14.33  90
Alnath         05:27:30.1 +28:37:19  1.6  6.96 104
114 Tau        05:28:47.0 +21:57:06  4.7  1.12 103
PPM 094431     05:31:52.6 +22:28:31  7.2  0.78 104
PPM 094450     05:33:03.6 +21:41:39  9.2  0.15 104
14UO224        05:33:32.6 +21:47:51 15.2       105
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, (2019/02/06 20:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.33  90
Alnath         05:26:17.5 +28:36:24  1.6  6.96 104
114 Tau        05:27:38.1 +21:56:13  4.7  1.12 103
PPM 094431     05:30:43.4 +22:27:44  7.2  0.78 104
PPM 094450     05:31:54.8 +21:40:53  9.2  0.15 104
14UO224        05:32:23.8 +21:47:06 15.2       104
Positions are for J2000

Event circumstances last updated at 2017/02/01 18:28:10 UT

Marc W. Buie, Southwest Research Institute

RECON