RECON: TNO occultation with 533206

Event between (533206) 14DE143 and star GA0900:03851927 with event index number of 2592973

Geocentric closest approach at 2022/02/17 19:11:44 UTC

J2000 position of star is 12:18:03.6 +00:24:26
Equinox of date position of star is 12:19:11.0 +00:17:08
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 22 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=22.5

TNO is 43.8 AU from the Sun and 43.0 AU from the Earth.
The TNO is moving 20.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 123 seconds.
The 1-sigma cross-track error in the shadow position is 1841 km.

The TNO has an absolute magnitude Hv=6.0
Diameter=375.0 km assuming a 5% albedo -- 18.7 sec chord
Diameter=153.1 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 533206, (2022/02/17 19:12UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:21.7 -11:16:34  1.0 20.30  42
Vindemiatrix   13:03:16.7 +10:50:26  2.8 15.21  30
15Eta Vir      12:21:02.4 -00:47:23  3.9  1.17  23
PPM 158694     12:19:05.5 +01:27:08  8.0  1.17  21
PPM 158676     12:18:06.3 +00:13:45  9.0  0.28  22
PPM 158680     12:18:26.8 +00:26:22 11.2  0.24  22
533206         12:19:11.6 +00:17:04 15.2        22
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 533206, (2022/02/17 19:12UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 20.30  42
Vindemiatrix   13:02:10.2 +10:57:33  2.8 15.21  30
15Eta Vir      12:19:54.3 -00:40:01  3.9  1.17  23
PPM 158694     12:17:57.5 +01:34:31  8.0  1.17  21
PPM 158676     12:16:58.3 +00:21:07  9.0  0.28  22
PPM 158680     12:17:18.7 +00:33:45 11.2  0.24  22
533206         12:18:03.6 +00:24:26 15.2        22
Positions are for J2000

Event circumstances last updated at 2021/12/06 01:46:49 UT

Marc W. Buie, Southwest Research Institute

RECON