RECON: TNO occultation with 06HE123

Event between 06HE123 and star GA0660:08891336 with event index number of 260293

Geocentric closest approach at 2020/05/28 12:45:55 UTC

J2000 position of star is 17:00:47.0 -22:06:27
Equinox of date position of star is 17:01:57.0 -22:08:05
Stellar brightness G=16.3, use SENSEUP=128
Star is 119 degrees from the moon. Moon is 32% illuminated.
TNO apparent brightness V=23.2

TNO is 41.6 AU from the Sun and 40.6 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 1082 seconds.
The 1-sigma cross-track error in the shadow position is 5111 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=235.5 km assuming a 5% albedo -- 9.7 sec chord
Diameter=96.1 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 06HE123, (2020/05/28 12:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.7 -26:28:32  0.9  8.35 113
35Eta Oph      17:11:33.0 -15:44:56  2.6  6.77 120
PPM 266403     17:07:25.0 -21:35:28  6.3  1.37 120
PPM 266258     17:01:42.8 -21:29:28  7.6  0.65 119
PPM 266254     17:01:35.0 -22:09:40  9.4  0.10 119
06HE123        17:02:00.5 -22:08:10 16.3       120
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 06HE123, (2020/05/28 12:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.35 113
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.77 120
PPM 266403     17:06:11.8 -21:33:54  6.3  1.37 120
PPM 266258     17:00:29.7 -21:27:44  7.6  0.65 119
PPM 266254     17:00:21.5 -22:07:56  9.4  0.10 119
06HE123        17:00:47.0 -22:06:27 16.3       119
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:42:43 UT

Marc W. Buie, Southwest Research Institute

RECON