RECON: TNO occultation with 14WO510

Event between 14WO510 and star GA1140:01174499 with event index number of 2644299

Geocentric closest approach at 2021/11/09 22:34:00 UTC

J2000 position of star is 05:24:12.6 +24:31:59
Equinox of date position of star is 05:25:32.6 +24:33:06
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=22.3

TNO is 32.4 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 19.4 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 280 seconds.
The 1-sigma cross-track error in the shadow position is 1559 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 12.1 sec chord
Diameter=95.7 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14WO510, (2021/11/09 22:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:10.6 +16:33:05  0.8 13.85 131
Alnath         05:27:40.5 +28:37:26  1.6  4.10 145
109 Tau        05:20:35.5 +22:07:02  4.9  2.69 143
PPM 094385     05:29:15.0 +23:18:34  8.4  1.50 145
PPM 094360     05:27:37.2 +24:06:36  9.7  0.65 145
PPM 094327     05:25:05.0 +24:28:15 11.8  0.13 144
14WO510        05:25:32.9 +24:33:06 16.8       145
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 14WO510, (2021/11/09 22:34UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 13.85 131
Alnath         05:26:17.6 +28:36:23  1.6  4.10 145
109 Tau        05:19:16.6 +22:05:45  4.9  2.69 143
PPM 094385     05:27:55.4 +23:17:34  8.4  1.50 145
PPM 094360     05:26:17.1 +24:05:33  9.7  0.65 145
PPM 094327     05:23:44.7 +24:27:07 11.8  0.13 144
14WO510        05:24:12.6 +24:31:59 16.8       144
Positions are for J2000

Event circumstances last updated at 2021/10/07 00:32:59 UT

Marc W. Buie, Southwest Research Institute

RECON