RECON: TNO occultation with 482824

Event between (482824) 13XC26 and star UC4-641-044184 with event index number of 179749

Geocentric closest approach at 2017/11/26 21:59:16 UTC

J2000 position of star is 08:25:44.2 +38:06:13
Equinox of date position of star is 08:26:51.1 +38:02:49
Stellar brightness R=14.6, use SENSEUP=128
Star is 140 degrees from the moon. Moon is 52% illuminated.
TNO apparent brightness V=20.3

TNO is 37.5 AU from the Sun and 36.9 AU from the Earth.
The TNO is moving 14.9 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 123 seconds.
The 1-sigma cross-track error in the shadow position is 2099 km.

The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 53.1 sec chord
Diameter=324.3 km assuming a 30% albedo -- 21.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 482824, (2017/11/26 21:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:24.6 +27:58:54  1.1 13.15 136
PPM 073770     08:32:29.4 +37:12:12  6.0  1.39 141
PPM 073689     08:26:33.4 +37:19:44  8.1  0.72 140
PPM 073718     08:28:29.5 +37:57:55  9.9  0.32 140
482824         08:26:54.3 +38:02:39 14.6       140
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 482824, (2017/11/26 21:59UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 13.15 136
PPM 073770     08:31:20.0 +37:15:52  6.0  1.39 141
PPM 073689     08:25:23.6 +37:23:17  8.1  0.72 140
PPM 073718     08:27:19.5 +38:01:31  9.9  0.32 140
482824         08:25:44.2 +38:06:13 14.6       139
Positions are for J2000

Event circumstances last updated at 2017/02/01 18:22:56 UT

Marc W. Buie, Southwest Research Institute

RECON