RECON: TNO occultation with 00FX53

Event between 00FX53 and star UC4-409-056586 with event index number of 107552

Geocentric closest approach at 2018/03/20 19:44:07 UTC

J2000 position of star is 13:47:25.2 -08:21:49
Equinox of date position of star is 13:48:20.9 -08:27:03
Stellar brightness R=12.1, use SENSEUP=16
Star is 167 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=23.8

TNO is 37.9 AU from the Sun and 37.0 AU from the Earth.
The TNO is moving 21.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 250 seconds.
The 1-sigma cross-track error in the shadow position is 4291 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=149.3 km assuming a 5% albedo -- 7.1 sec chord
Diameter=60.9 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 00FX53, (2018/03/20 19:44UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:09.3 -11:15:21  1.0  6.15 162
PPM 196876     13:48:11.3 -09:48:00  6.2  1.35 167
PPM 196892     13:48:59.4 -08:06:57  8.0  0.37 167
PPM 196869     13:47:19.5 -08:31:45  8.8  0.27 167
00FX53         13:48:22.9 -08:27:14 12.1       167
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 00FX53, (2018/03/20 19:44UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  6.15 162
PPM 196876     13:47:13.4 -09:42:35  6.2  1.35 167
PPM 196892     13:48:01.8 -08:01:32  8.0  0.37 167
PPM 196869     13:46:21.8 -08:26:19  8.8  0.27 167
00FX53         13:47:25.2 -08:21:49 12.1       167
Positions are for J2000

Event circumstances last updated at 2017/08/01 16:35:32 UT

Marc W. Buie, Southwest Research Institute

RECON