RECON: TNO occultation with 14UQ250

Event between 14UQ250 and star GA0840:00265706 with event index number of 2570175

Geocentric closest approach at 2023/01/25 17:11:38 UTC

J2000 position of star is 03:20:52.3 -04:54:30
Equinox of date position of star is 03:21:57.3 -04:49:52
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 50 degrees from the moon. Moon is 20% illuminated.
TNO apparent brightness V=23.3

TNO is 36.5 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 13.6 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 243 seconds.
The 1-sigma cross-track error in the shadow position is 3951 km.

The TNO has an absolute magnitude Hv=7.5
Diameter=157.8 km assuming a 5% albedo -- 13.9 sec chord
Diameter=64.4 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 5:2EEE+5:2EII
 
 
 
 
 
 
 
 

Star training set for 14UQ250, (2023/01/25 17:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.8 +16:33:14  0.8 28.34  71
Menkar         03:03:29.3 +04:10:44  2.5 10.13  46
PPM 185591     03:17:30.4 -05:38:48  6.3  1.39  49
PPM 185743     03:26:08.1 -05:17:18  8.1  1.12  51
PPM 185666     03:21:45.0 -04:52:58  9.5  0.09  50
14UQ250        03:22:01.2 -04:49:35 13.6        50
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 14UQ250, (2023/01/25 17:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 28.34  71
Menkar         03:02:16.8 +04:05:21  2.5 10.13  46
PPM 185591     03:16:21.7 -05:43:50  6.3  1.39  49
PPM 185743     03:24:59.4 -05:22:06  8.1  1.12  51
PPM 185666     03:20:36.1 -04:57:53  9.5  0.09  50
14UQ250        03:20:52.3 -04:54:30 13.6        50
Positions are for J2000

Event circumstances last updated at 2021/10/06 01:11:04 UT

Marc W. Buie, Southwest Research Institute

RECON