RECON: TNO occultation with 14UO250

Event between 14UO250 and star GA0920:00226959 with event index number of 1949357

Geocentric closest approach at 2022/07/04 02:52:13 UTC

J2000 position of star is 02:40:54.3 +03:56:00
Equinox of date position of star is 02:42:02.5 +04:01:32
Stellar brightness G=14.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=23.5

TNO is 39.3 AU from the Sun and 39.8 AU from the Earth.
The TNO is moving 19.2 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 279 seconds.
The 1-sigma cross-track error in the shadow position is 1630 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=174.6 km assuming a 5% albedo -- 10.6 sec chord
Diameter=71.3 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 14UO250, (2022/07/04 02:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:12.9 +16:33:10  0.8 30.90  88
Menkar         03:03:27.5 +04:10:36  2.5  5.33 113
PPM 145873     02:46:31.9 +04:48:19  6.2  1.35 117
PPM 145816     02:42:32.4 +04:31:22  7.2  0.51 118
PPM 145814     02:42:25.2 +03:56:59 10.1  0.12 119
14UO250        02:42:04.9 +04:01:43 14.7       118
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 14UO250, (2022/07/04 02:52UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 30.90  88
Menkar         03:02:16.8 +04:05:21  2.5  5.33 113
PPM 145873     02:45:21.0 +04:42:41  6.2  1.35 117
PPM 145816     02:41:21.7 +04:25:39  7.2  0.51 118
PPM 145814     02:41:14.7 +03:51:16 10.1  0.12 119
14UO250        02:40:54.3 +03:56:00 14.7       119
Positions are for J2000

Event circumstances last updated at 2021/10/06 01:06:47 UT

Marc W. Buie, Southwest Research Institute

RECON