RECON: TNO occultation with 14UU240

Event between 14UU240 and star GA0880:00288795 with event index number of 2570287

Geocentric closest approach at 2023/03/09 12:06:08 UTC

J2000 position of star is 03:28:40.9 -01:46:01
Equinox of date position of star is 03:29:47.2 -01:41:35
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 139 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=23.2

TNO is 30.5 AU from the Sun and 30.9 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 2222 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=123.6 km assuming a 5% albedo -- 6.6 sec chord
Diameter=50.5 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 
 
 

Star training set for 14UU240, (2023/03/09 12:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:15.2 +16:33:15  0.8 24.69 121
Menkar         03:03:29.7 +04:10:46  2.5  8.82 145
95 Cet         03:19:33.7 -00:50:50  6.2  2.71 141
PPM 185816     03:29:19.1 -02:24:02  8.2  0.73 139
PPM 175314     03:29:27.1 -01:46:30  9.7  0.13 139
14UU240        03:29:51.5 -01:41:17 16.6       138
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 14UU240, (2023/03/09 12:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 24.69 121
Menkar         03:02:16.8 +04:05:21  2.5  8.82 145
95 Cet         03:18:22.8 -00:55:50  6.2  2.71 141
PPM 185816     03:28:08.8 -02:28:47  8.2  0.73 139
PPM 175314     03:28:16.5 -01:51:15  9.7  0.13 139
14UU240        03:28:40.9 -01:46:01 16.6       139
Positions are for J2000

Event circumstances last updated at 2021/10/06 01:15:37 UT

Marc W. Buie, Southwest Research Institute

RECON