RECON: TNO occultation with 06UX184

Event between 06UX184 and star GA1380:02801700 with event index number of 2016389

Geocentric closest approach at 2022/01/20 18:55:04 UTC

J2000 position of star is 04:45:08.5 +49:10:19
Equinox of date position of star is 04:46:48.0 +49:12:38
Stellar brightness G=15.3, 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 92% illuminated.
TNO apparent brightness V=22.2

TNO is 21.0 AU from the Sun and 20.4 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is 3370 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=105.7 km assuming a 5% albedo -- 6.6 sec chord
Diameter=43.1 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 06UX184, (2022/01/20 18:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:11.3 +16:33:07  0.8 32.72  83
Mirphak        03:25:54.5 +49:56:16  1.8 13.10  88
PPM 047292     04:45:02.6 +50:00:49  5.9  0.85  76
PPM 047390     04:51:21.8 +49:37:30  7.8  0.85  75
PPM 047316     04:47:02.8 +49:17:03  9.3  0.08  75
06UX184        04:46:48.6 +49:12:39 15.3        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 06UX184, (2022/01/20 18:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 32.72  83
Mirphak        03:24:19.4 +49:51:40  1.8 13.10  88
PPM 047292     04:43:21.6 +49:58:25  5.9  0.85  76
PPM 047390     04:49:40.9 +49:35:18  7.8  0.85  75
PPM 047316     04:45:22.5 +49:14:43  9.3  0.08  75
06UX184        04:45:08.5 +49:10:19 15.3        75
Positions are for J2000

Event circumstances last updated at 2021/12/04 02:03:28 UT

Marc W. Buie, Southwest Research Institute

RECON