RECON: TNO occultation with 469506

Event between (469506) 03FF128 and star UC4-352-076432 with event index number of 147859

Geocentric closest approach at 2017/05/24 13:43:15 UTC

J2000 position of star is 16:03:25.2 -19:45:49
Equinox of date position of star is 16:04:23.4 -19:48:31
Stellar brightness R=13.0
Star is 163 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.6

TNO is 31.3 AU from the Sun and 30.3 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 80 seconds.
The 1-sigma cross-track error in the shadow position is 1186 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.7 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469506, (2017/05/24 13:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.6 -26:28:09  0.9  8.95 154
8Bet1Sco       16:06:27.1 -19:51:06  2.6  0.48 162
8Bet2Sco       16:06:27.5 -19:50:53  5.1  0.48 162
PPM 231131     16:04:07.9 -19:53:16  7.7  0.10 163
469506         16:04:26.0 -19:48:38 13.0       162
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 469506, (2017/05/24 13:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  8.95 154
8Bet1Sco       16:05:26.2 -19:48:20  2.6  0.48 162
8Bet2Sco       16:05:26.7 -19:48:07  5.1  0.48 162
PPM 231131     16:03:07.1 -19:50:27  7.7  0.10 163
469506         16:03:25.2 -19:45:49 13.0       163
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:13:41 UT

Marc W. Buie, Southwest Research Institute

RECON