RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star UC4-386-076433 with event index number of 149801

Geocentric closest approach at 2017/05/04 12:18:16 UTC

J2000 position of star is 17:05:08.5 -12:55:15
Equinox of date position of star is 17:06:04.8 -12:56:34
Stellar brightness R=13.7
Star is 105 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=22.0

TNO is 28.7 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is 1158 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 10.4 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469362, (2017/05/04 12:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.4 -26:28:09  0.9 15.90  98
35Eta Oph      17:11:22.4 -15:44:43  2.6  3.08 106
PPM 232685     17:10:45.5 -10:32:40  5.6  2.65 106
PPM 232565     17:05:27.9 -12:41:58  6.9  0.29 105
PPM 232563     17:05:27.1 -13:05:44  9.3  0.22 105
469362         17:06:07.0 -12:56:37 13.7       105
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, (2017/05/04 12:18UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 15.90  98
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.08 106
PPM 232685     17:09:48.0 -10:31:26  5.6  2.65 106
PPM 232565     17:04:29.5 -12:40:35  6.9  0.29 105
PPM 232563     17:04:28.6 -13:04:22  9.3  0.22 105
469362         17:05:08.5 -12:55:15 13.7       105
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:12:38 UT

Marc W. Buie, Southwest Research Institute

RECON