RECON: TNO occultation with 10AV153

Event between 10AV153 and star GA0960:03571018 with event index number of 2076628

Geocentric closest approach at 2022/03/04 20:37:10 UTC

J2000 position of star is 09:45:01.8 +06:07:12
Equinox of date position of star is 09:46:11.6 +06:01:03
Stellar brightness G=13.1, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 134 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.1

TNO is 29.9 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 22.8 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 61 seconds.
The 1-sigma cross-track error in the shadow position is 1169 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 9.3 sec chord
Diameter=85.7 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 10AV153, (2022/03/04 20:36UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:33.0 +11:51:29  1.3  8.21 139
PPM 156172     09:47:20.1 +06:36:19  5.8  0.65 135
PPM 156196     09:48:47.4 +05:27:20  8.5  0.86 135
PPM 156127     09:44:39.3 +06:06:19  8.7  0.39 134
PPM 156155     09:46:17.3 +06:23:40 11.4  0.38 134
10AV153        09:46:11.8 +06:01:02 13.1       135
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 10AV153, (2022/03/04 20:36UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  8.21 139
PPM 156172     09:46:10.1 +06:42:30  5.8  0.65 135
PPM 156196     09:47:37.6 +05:33:33  8.5  0.86 135
PPM 156127     09:43:29.4 +06:12:28  8.7  0.39 134
PPM 156155     09:45:07.3 +06:29:50 11.4  0.38 134
10AV153        09:45:01.8 +06:07:12 13.1       134
Positions are for J2000

Event circumstances last updated at 2022/02/13 02:02:21 UT

Marc W. Buie, Southwest Research Institute

RECON