RECON: TNO occultation with 14NB66

Event between 14NB66 and star GA0900:16532016 with event index number of 2510342

Geocentric closest approach at 2021/09/29 12:56:15 UTC

J2000 position of star is 23:32:59.4 +01:32:30
Equinox of date position of star is 23:34:06.0 +01:39:42
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=22.5

TNO is 48.3 AU from the Sun and 47.3 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 108 seconds.
The 1-sigma cross-track error in the shadow position is 2074 km.

The TNO has an absolute magnitude Hv=5.7
Diameter=440.6 km assuming a 5% albedo -- 17.7 sec chord
Diameter=179.9 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14NB66, (2021/09/29 13:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:50.9 -29:30:24  1.2 32.29 126
Markab         23:05:50.7 +15:19:21  2.5 15.34 106
16 Psc         23:37:29.9 +02:13:23  5.7  1.02 106
PPM 174237     23:36:35.3 +01:26:00  7.4  0.66 107
PPM 174175     23:32:52.6 +01:20:26  9.1  0.44 107
PPM 174173     23:32:47.8 +01:51:10 10.2  0.38 107
14NB66         23:34:06.1 +01:39:43 16.2       107
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 14NB66, (2021/09/29 13:00UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 32.29 126
Markab         23:04:45.8 +15:12:18  2.5 15.34 106
16 Psc         23:36:23.2 +02:06:09  5.7  1.02 106
PPM 174237     23:35:28.5 +01:18:47  7.4  0.66 107
PPM 174175     23:31:45.8 +01:13:14  9.1  0.44 107
PPM 174173     23:31:41.0 +01:43:57 10.2  0.38 107
14NB66         23:32:59.4 +01:32:30 16.2       107
Positions are for J2000

Event circumstances last updated at 2021/09/16 00:59:40 UT

Marc W. Buie, Southwest Research Institute

RECON