RECON: TNO occultation with 14OW393

Event between 14OW393 and star GA0900:16269708 with event index number of 2512619

Geocentric closest approach at 2022/12/18 17:17:16 UTC

J2000 position of star is 21:43:40.9 +01:08:49
Equinox of date position of star is 21:44:50.5 +01:15:08
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 123 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=23.9

TNO is 25.4 AU from the Sun and 25.8 AU from the Earth.
The TNO is moving 20.4 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 144 seconds.
The 1-sigma cross-track error in the shadow position is 2347 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=70.8 km assuming a 5% albedo -- 3.5 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14OW393, (2022/12/18 17:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:54.8 -29:30:00  1.2 35.48 127
Markab         23:05:54.4 +15:19:45  2.5 24.45 143
25 Aqr         21:40:43.1 +02:20:53  6.5  1.51 122
26 Aqr         21:43:20.3 +01:23:27  7.3  0.40 122
PPM 172177     21:45:06.4 +01:13:22 11.2  0.07 123
14OW393        21:44:51.1 +01:15:11 16.9       123
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 14OW393, (2022/12/18 17:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 35.48 127
Markab         23:04:45.8 +15:12:18  2.5 24.45 143
25 Aqr         21:39:33.2 +02:14:35  6.5  1.51 122
26 Aqr         21:42:10.1 +01:17:07  7.3  0.40 122
PPM 172177     21:43:56.1 +01:07:00 11.2  0.07 123
14OW393        21:43:40.9 +01:08:49 16.9       123
Positions are for J2000

Event circumstances last updated at 2022/09/30 04:14:12 UT

Marc W. Buie, Southwest Research Institute

RECON