RECON: TNO occultation with 06JU58

Event between 06JU58 and star GA0680:07212559 with event index number of 1086228

Geocentric closest approach at 2021/05/31 18:55:18 UTC

J2000 position of star is 16:34:23.2 -20:31:32
Equinox of date position of star is 16:35:38.6 -20:34:07
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 72 degrees from the moon. Moon is 66% illuminated.
TNO apparent brightness V=23.7

TNO is 48.4 AU from the Sun and 47.4 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 587 seconds.
The 1-sigma cross-track error in the shadow position is 3760 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 10.0 sec chord
Diameter=102.6 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 06JU58, (2021/05/31 18:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.4 -26:28:40  0.9  6.02  72
8Bet1Sco       16:06:41.1 -19:51:45  2.6  6.83  79
PPM 232040     16:43:09.4 -19:57:49  5.8  1.86  71
PPM 265647     16:33:42.1 -20:47:47  8.3  0.51  73
PPM 265671     16:35:29.6 -20:49:04 10.0  0.25  72
06JU58         16:35:39.0 -20:34:08 15.1        72
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 06JU58, (2021/05/31 18:55UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  6.02  72
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.83  79
PPM 232040     16:41:53.8 -19:55:27  5.8  1.86  71
PPM 265647     16:32:26.2 -20:45:08  8.3  0.51  73
PPM 265671     16:34:13.6 -20:46:29 10.0  0.25  72
06JU58         16:34:23.2 -20:31:32 15.1        72
Positions are for J2000

Event circumstances last updated at 2021/04/19 23:03:32 UT

Marc W. Buie, Southwest Research Institute

RECON