RECON: TNO occultation with 06WF206

Event between 06WF206 and star GA1040:03331747 with event index number of 2017410

Geocentric closest approach at 2022/06/11 12:56:26 UTC

J2000 position of star is 09:49:45.6 +15:17:33
Equinox of date position of star is 09:50:58.2 +15:11:18
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 75 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=23.2

TNO is 43.7 AU from the Sun and 44.1 AU from the Earth.
The TNO is moving 17.1 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 296 seconds.
The 1-sigma cross-track error in the shadow position is 4197 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=289.7 km assuming a 5% albedo -- 16.9 sec chord
Diameter=118.3 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 06WF206, (2022/06/11 12:56UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:33.9 +11:51:24  1.3  5.61  70
16Psi Leo      09:44:57.1 +13:55:05  5.3  1.93  76
PPM 126818     09:50:09.0 +15:27:38  8.5  0.34  75
PPM 126843     09:51:18.6 +15:24:01 10.8  0.23  75
06WF206        09:50:59.0 +15:11:13 17.0        75
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 06WF206, (2022/06/11 12:56UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  5.61  70
16Psi Leo      09:43:43.9 +14:01:18  5.3  1.93  76
PPM 126818     09:48:55.5 +15:33:57  8.5  0.34  75
PPM 126843     09:50:05.2 +15:30:21 10.8  0.23  75
06WF206        09:49:45.6 +15:17:33 17.0        75
Positions are for J2000

Event circumstances last updated at 2022/03/13 02:13:51 UT

Marc W. Buie, Southwest Research Institute

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