RECON: TNO occultation with 11CY119

Event between 11CY119 and star GA0900:03834239 with event index number of 2117303

Geocentric closest approach at 2022/12/14 15:15:40 UTC

J2000 position of star is 12:07:33.8 +00:05:05
Equinox of date position of star is 12:08:43.7 -00:02:31
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 67% illuminated.
TNO apparent brightness V=22.9

TNO is 39.9 AU from the Sun and 40.1 AU from the Earth.
The TNO is moving 10.2 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 1460 seconds.
The 1-sigma cross-track error in the shadow position is 4889 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 27.0 sec chord
Diameter=112.4 km assuming a 30% albedo -- 11.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 11CY119, (2022/12/14 15:16UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:24.3 -11:16:49  1.0 22.32  51
Denebola       11:50:13.8 +14:26:37  2.1 15.19  20
10 Vir         12:10:51.9 +01:46:09  5.9  1.89  28
PPM 158545     12:09:11.2 +00:29:36  7.7  0.55  29
PPM 158518     12:07:52.9 +00:08:46  8.7  0.29  28
PPM 158554     12:09:38.7 -00:06:56 10.1  0.24  29
11CY119        12:08:44.4 -00:02:35 16.5        29
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 11CY119, (2022/12/14 15:16UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 22.32  51
Denebola       11:49:02.9 +14:34:17  2.1 15.19  20
10 Vir         12:09:41.4 +01:53:49  5.9  1.89  28
PPM 158545     12:08:00.6 +00:37:16  7.7  0.55  29
PPM 158518     12:06:42.3 +00:16:25  8.7  0.29  28
PPM 158554     12:08:28.1 +00:00:44 10.1  0.24  29
11CY119        12:07:33.8 +00:05:05 16.5        29
Positions are for J2000

Event circumstances last updated at 2022/10/01 04:17:50 UT

Marc W. Buie, Southwest Research Institute

RECON