RECON: TNO occultation with 535019

Event between (535019) 14WE509 and star GA1000:03562311 with event index number of 2345505

Geocentric closest approach at 2022/12/03 08:10:17 UTC

J2000 position of star is 12:00:06.6 +11:20:22
Equinox of date position of star is 12:01:14.8 +11:12:57
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=22.8

TNO is 33.9 AU from the Sun and 34.1 AU from the Earth.
The TNO is moving 14.0 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 194 seconds.
The 1-sigma cross-track error in the shadow position is 1554 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=207.0 km assuming a 5% albedo -- 14.8 sec chord
Diameter=84.5 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 535019, (2022/12/03 08:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.4 +11:51:15  1.3 27.36 135
Denebola       11:50:13.7 +14:26:38  2.1  4.21 155
9Omi Vir       12:06:22.6 +08:36:20  4.1  2.89 162
PPM 128719     12:02:24.2 +12:15:00  7.0  1.07 158
PPM 128722     12:02:31.9 +11:11:48  9.6  0.31 159
PPM 128702     12:01:04.1 +11:09:23 11.3  0.08 159
535019         12:01:17.0 +11:12:42 16.0       159
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 535019, (2022/12/03 08:07UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 27.36 135
Denebola       11:49:02.9 +14:34:17  2.1  4.21 155
9Omi Vir       12:05:12.2 +08:44:00  4.1  2.89 162
PPM 128719     12:01:13.7 +12:22:39  7.0  1.07 158
PPM 128722     12:01:21.4 +11:19:28  9.6  0.31 159
PPM 128702     11:59:53.6 +11:17:02 11.3  0.08 159
535019         12:00:06.6 +11:20:22 16.0       159
Positions are for J2000

Event circumstances last updated at 2022/03/12 01:49:58 UT

Marc W. Buie, Southwest Research Institute

RECON