RECON: TNO occultation with 579062

Event between (579062) 14KF113 and star GA0940:04750981 with event index number of 2557261

Geocentric closest approach at 2022/02/12 06:58:24 UTC

J2000 position of star is 17:10:52.7 +05:18:01
Equinox of date position of star is 17:11:57.1 +05:16:30
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.6

TNO is 35.4 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 21.8 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 116 seconds.
The 1-sigma cross-track error in the shadow position is 1722 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=250.0 km assuming a 5% albedo -- 11.5 sec chord
Diameter=102.1 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 579062, (2022/02/12 06:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.0 -26:28:45  0.9 33.28 156
60Bet Oph      17:44:34.0 +04:33:35  2.8  8.15 148
PPM 163642     17:12:49.3 +07:52:10  6.3  2.60 142
PPM 163635     17:12:28.2 +04:39:53  7.4  0.62 145
PPM 163622     17:11:45.6 +05:21:18  9.1  0.10 144
579062         17:11:58.1 +05:16:28 16.8       145
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 579062, (2022/02/12 06:58UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.28 156
60Bet Oph      17:43:28.3 +04:34:06  2.8  8.15 148
PPM 163642     17:11:45.3 +07:53:41  6.3  2.60 142
PPM 163635     17:11:22.5 +04:41:25  7.4  0.62 145
PPM 163622     17:10:40.3 +05:22:51  9.1  0.10 144
579062         17:10:52.7 +05:18:01 16.8       145
Positions are for J2000

Event circumstances last updated at 2021/10/12 02:04:00 UT

Marc W. Buie, Southwest Research Institute

RECON