RECON: TNO occultation with 11HM102

Event between 11HM102 and star GA0600:48378948 with event index number of 2118657

Geocentric closest approach at 2022/04/14 18:16:34 UTC

J2000 position of star is 20:29:54.3 -29:52:15
Equinox of date position of star is 20:31:16.0 -29:47:43
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=23.1

TNO is 28.4 AU from the Sun and 28.6 AU from the Earth.
The TNO is moving 12.6 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 106 seconds.
The 1-sigma cross-track error in the shadow position is 1066 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 10.5 sec chord
Diameter=54.3 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 
 
 

Star training set for 11HM102, (2022/04/14 18:25UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:52.6 -29:30:13  1.2 31.93 151
38Zet Sgr      19:04:01.6 -29:50:47  2.7 18.89 105
PPM 271117     20:26:48.5 -28:35:22  5.8  1.55 123
PPM 271233     20:32:06.7 -29:36:53  8.4  0.26 124
PPM 271201     20:30:38.8 -29:51:35 10.0  0.15 124
11HM102        20:31:16.3 -29:47:42 13.8       124
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 11HM102, (2022/04/14 18:25UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 31.93 151
38Zet Sgr      19:02:36.7 -29:52:49  2.7 18.89 105
PPM 271117     20:25:26.9 -28:39:48  5.8  1.55 123
PPM 271233     20:30:44.8 -29:41:27  8.4  0.26 124
PPM 271201     20:29:16.7 -29:56:07 10.0  0.15 124
11HM102        20:29:54.3 -29:52:15 13.8       124
Positions are for J2000

Event circumstances last updated at 2022/03/12 01:35:42 UT

Marc W. Buie, Southwest Research Institute

RECON