RECON: TNO occultation with 14FC72

Event between 14FC72 and star GA0940:03839309 with event index number of 2476037

Geocentric closest approach at 2022/08/15 22:30:07 UTC

J2000 position of star is 13:52:41.2 +04:14:21
Equinox of date position of star is 13:53:48.7 +04:07:48
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=21.9

TNO is 51.7 AU from the Sun and 52.1 AU from the Earth.
The TNO is moving 18.9 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 130 seconds.
The 1-sigma cross-track error in the shadow position is 2015 km.

The TNO has an absolute magnitude Hv=4.6
Diameter=708.0 km assuming a 5% albedo -- 37.6 sec chord
Diameter=289.0 km assuming a 30% albedo -- 15.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14FC72, (2022/08/15 22:30UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:41.7 +19:03:58  0.0 15.95 151
Vindemiatrix   13:03:18.2 +10:50:17  2.8 14.20 166
PPM 160305     14:05:04.0 +04:47:35  6.2  2.88 162
PPM 160145     13:55:18.6 +03:02:36  8.4  1.15 165
PPM 160129     13:54:30.6 +04:35:30 10.0  0.49 164
PPM 160122     13:54:04.7 +04:14:25 10.8  0.13 164
14FC72         13:53:49.7 +04:07:42 16.2       164
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 14FC72, (2022/08/15 22:30UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.0 +19:10:14  0.0 15.95 151
Vindemiatrix   13:02:10.2 +10:57:33  2.8 14.20 166
PPM 160305     14:03:55.7 +04:54:03  6.2  2.88 162
PPM 160145     13:54:09.8 +03:09:13  8.4  1.15 165
PPM 160129     13:53:22.2 +04:42:08 10.0  0.49 164
PPM 160122     13:52:56.3 +04:21:04 10.8  0.13 164
14FC72         13:52:41.2 +04:14:21 16.2       164
Positions are for J2000

Event circumstances last updated at 2022/04/18 23:13:23 UT

Marc W. Buie, Southwest Research Institute

RECON