RECON: TNO occultation with 14NT86

Event between 14NT86 and star GA0620:42725574 with event index number of 2510648

Geocentric closest approach at 2023/04/02 23:55:57 UTC

J2000 position of star is 20:27:38.1 -26:45:44
Equinox of date position of star is 20:29:00.3 -26:41:08
Stellar brightness G=14.0, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 146 degrees from the moon. Moon is 90% illuminated.
TNO apparent brightness V=21.6

TNO is 34.4 AU from the Sun and 34.8 AU from the Earth.
The TNO is moving 16.4 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 107 seconds.
The 1-sigma cross-track error in the shadow position is 1332 km.

The TNO has an absolute magnitude Hv=6.0
Diameter=373.3 km assuming a 5% albedo -- 23.4 sec chord
Diameter=152.4 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14NT86, (2023/04/02 23:51UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:55.8 -29:29:54  1.2 33.04 163
38Zet Sgr      19:04:05.3 -29:50:41  2.7 18.94 127
PPM 271117     20:26:52.0 -28:35:10  5.8  1.96 145
PPM 271126     20:27:12.6 -26:28:45  8.0  0.46 146
PPM 271160     20:29:06.1 -26:37:41  9.4  0.06 146
14NT86         20:29:02.0 -26:41:03 14.0       147
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 14NT86, (2023/04/02 23:51UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 33.04 163
38Zet Sgr      19:02:36.7 -29:52:49  2.7 18.94 127
PPM 271117     20:25:26.9 -28:39:48  5.8  1.96 145
PPM 271126     20:25:48.7 -26:33:23  8.0  0.46 146
PPM 271160     20:27:42.2 -26:42:23  9.4  0.06 146
14NT86         20:27:38.1 -26:45:44 14.0       146
Positions are for J2000

Event circumstances last updated at 2022/10/10 04:16:46 UT

Marc W. Buie, Southwest Research Institute

RECON