RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star UC4-392-071385 with event index number of 198673

Geocentric closest approach at 2019/06/30 13:08:34 UTC

J2000 position of star is 17:21:17.8 -11:44:48
Equinox of date position of star is 17:22:16.4 -11:45:46
Stellar brightness R=15.1, use SENSEUP=128
Star is 166 degrees from the moon. Moon is 7% illuminated.
TNO apparent brightness V=22.0

TNO is 28.6 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 21.8 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 153 seconds.
The 1-sigma cross-track error in the shadow position is 1159 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.2 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469362, (2019/06/30 13:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.4 -26:28:25  0.9 19.10 172
35Eta Oph      17:11:29.9 -15:44:52  2.6  4.78 170
53Nu Ser       17:21:55.5 -12:51:54  4.0  1.11 167
PPM 232967     17:22:27.2 -11:57:54  8.1  0.20 166
469362         17:22:23.1 -11:45:52 15.1       166
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 469362, (2019/06/30 13:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.10 172
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.78 170
53Nu Ser       17:20:49.7 -12:50:49  4.0  1.11 167
PPM 232967     17:21:21.8 -11:56:50  8.1  0.20 166
469362         17:21:17.8 -11:44:48 15.1       166
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:50:20 UT

Marc W. Buie, Southwest Research Institute

RECON