RECON: TNO occultation with 14PE88

Event between 14PE88 and star GA0520:39439416 with event index number of 2739169

Geocentric closest approach at 2022/08/03 01:59:54 UTC

J2000 position of star is 22:07:58.7 -36:10:03
Equinox of date position of star is 22:09:16.1 -36:03:34
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 127 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=22.9

TNO is 37.4 AU from the Sun and 36.5 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 137 seconds.
The 1-sigma cross-track error in the shadow position is 2371 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=233.4 km assuming a 5% albedo -- 9.8 sec chord
Diameter=95.3 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 14PE88, (2022/08/03 02:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.6 -29:30:07  1.2 12.30 139
Alnair         22:09:38.8 -46:51:02  1.7 10.79 120
Ups PsA        22:09:44.8 -33:55:58  4.6  2.13 128
PPM 302204     22:08:23.3 -35:05:43  8.4  0.98 127
PPM 302233     22:09:51.3 -36:11:34  9.9  0.18 127
14PE88         22:09:18.4 -36:03:23 15.7       127
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 14PE88, (2022/08/03 02:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 12.30 139
Alnair         22:08:14.3 -46:57:43  1.7 10.79 120
Ups PsA        22:08:25.9 -34:02:39  4.6  2.13 128
PPM 302204     22:07:03.9 -35:12:22  8.4  0.98 127
PPM 302233     22:08:31.6 -36:18:15  9.9  0.18 127
14PE88         22:07:58.7 -36:10:03 15.7       127
Positions are for J2000

Event circumstances last updated at 2021/12/02 00:55:11 UT

Marc W. Buie, Southwest Research Institute

RECON