RECON: TNO occultation with 469506

Event between (469506) 03FF128 and star UC4-352-076213 with event index number of 147863

Geocentric closest approach at 2017/06/13 02:25:02 UTC

J2000 position of star is 16:01:22.7 -19:40:24
Equinox of date position of star is 16:02:20.9 -19:43:09
Stellar brightness R=16.2
Star is 59 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=21.7

TNO is 31.3 AU from the Sun and 30.4 AU from the Earth.
The TNO is moving 21.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1222 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 12.6 sec chord
Diameter=112.4 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469506, (2017/06/13 02:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.8 -26:28:09  0.9  9.34  52
8Bet1Sco       16:06:27.3 -19:51:07  2.6  0.96  58
8Bet2Sco       16:06:27.7 -19:50:54  5.1  0.97  58
PPM 231101     16:03:16.0 -19:29:59  8.4  0.30  59
PPM 231098     16:03:06.4 -19:49:44  9.2  0.20  59
469506         16:02:23.6 -19:43:17 16.2        59
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, (2017/06/13 02:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  9.34  52
8Bet1Sco       16:05:26.2 -19:48:20  2.6  0.96  58
8Bet2Sco       16:05:26.7 -19:48:07  5.1  0.97  58
PPM 231101     16:02:15.2 -19:27:08  8.4  0.30  59
PPM 231098     16:02:05.5 -19:46:53  9.2  0.20  59
469506         16:01:22.7 -19:40:24 16.2        59
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:14:06 UT

Marc W. Buie, Southwest Research Institute

RECON