RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star UC4-392-073139 with event index number of 349947

Geocentric closest approach at 2020/10/07 17:46:46 UTC

J2000 position of star is 17:29:49.9 -11:36:51
Equinox of date position of star is 17:30:58.8 -11:37:45
Stellar brightness R=15.2, use SENSEUP=128
Star is 168 degrees from the moon. Moon is 72% illuminated.
TNO apparent brightness V=24.8

TNO is 28.5 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 18.3 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 1149 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=199.5 km assuming a 5% albedo -- 3.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469362, (2020/10/07 17:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:41.1 -26:28:35  0.9 20.54 170
35Eta Oph      17:11:34.2 -15:44:57  2.6  6.26 173
PPM 233365     17:39:18.7 -10:56:13  5.7  2.15 167
PPM 233145     17:30:57.6 -11:09:32  7.7  0.47 168
PPM 233150     17:31:07.2 -11:37:05  9.4  0.03 168
469362         17:30:59.5 -11:37:45 15.2       168
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, (2020/10/07 17:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.54 170
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.26 173
PPM 233365     17:38:09.5 -10:55:35  5.7  2.15 167
PPM 233145     17:29:48.3 -11:08:38  7.7  0.47 168
PPM 233150     17:29:57.7 -11:36:12  9.4  0.03 168
469362         17:29:49.9 -11:36:51 15.2       168
Positions are for J2000

Event circumstances last updated at 2020/07/30 22:24:26 UT

Marc W. Buie, Southwest Research Institute

RECON