RECON: TNO occultation with 469505

Event between (469505) 03FE128 and star GA0720:05812150 with event index number of 277761

Geocentric closest approach at 2020/07/10 00:39:29 UTC

J2000 position of star is 16:00:10.4 -17:12:46
Equinox of date position of star is 16:01:20.8 -17:16:11
Stellar brightness G=16.0, use SENSEUP=128
Star is 104 degrees from the moon. Moon is 77% illuminated.
TNO apparent brightness V=25.7

TNO is 36.3 AU from the Sun and 35.6 AU from the Earth.
The TNO is moving 14.7 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 139 seconds.
The 1-sigma cross-track error in the shadow position is 1324 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=331.1 km assuming a 5% albedo -- 4.1 sec chord
Diameter=135.2 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 469505, (2020/07/10 00:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.1 -26:28:33  0.9 11.44  95
8Bet1Sco       16:06:38.0 -19:51:36  2.6  2.88 103
49 Lib         16:01:28.9 -16:35:32  5.5  0.68 105
PPM 231016     15:59:08.1 -17:08:54  8.0  0.54 105
PPM 231046     16:00:28.5 -17:20:44  8.6  0.22 105
469505         16:01:20.9 -17:16:11 16.0       104
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 469505, (2020/07/10 00:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.44  95
8Bet1Sco       16:05:26.2 -19:48:20  2.6  2.88 103
49 Lib         16:00:18.7 -16:32:08  5.5  0.68 105
PPM 231016     15:57:57.7 -17:05:26  8.0  0.54 105
PPM 231046     15:59:18.0 -17:17:18  8.6  0.22 105
469505         16:00:10.4 -17:12:46 16.0       104
Positions are for J2000

Event circumstances last updated at 2020/07/03 21:01:18 UT

Marc W. Buie, Southwest Research Institute

RECON