RECON: TNO occultation with 14UU228

Event between 14UU228 and star GA1080:00362766 with event index number of 1976089

Geocentric closest approach at 2023/12/18 20:39:31 UTC

J2000 position of star is 03:22:32.5 +19:55:35
Equinox of date position of star is 03:23:54.8 +20:00:37
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 69 degrees from the moon. Moon is 40% illuminated.
Apparent brightness V=24.2

Object is 27.9 AU from the Sun and 27.0 AU from the Earth.
Apparent velocity is 18.9 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 349 seconds.
The 1-sigma cross-track error in the shadow position is 3303 km.

The object has an absolute magnitude Hv=9.7
Diameter=68.6 km assuming a 5% albedo -- 3.6 sec chord
Diameter=28.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14UU228, (2023/12/18 20:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.9 +16:33:20  0.8 17.75  85
44Zet Per      03:55:38.7 +31:57:10  2.8 13.90  79
63Tau2Ari      03:24:08.3 +20:49:34  6.2  0.82  69
PPM 119052     03:25:23.7 +19:59:26  8.2  0.35  69
PPM 092446     03:23:57.8 +20:13:23 10.4  0.21  69
14UU228        03:23:55.2 +20:00:38 15.0        69
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 14UU228, (2023/12/18 20:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.75  85
44Zet Per      03:54:07.9 +31:53:01  2.8 13.90  79
63Tau2Ari      03:22:45.2 +20:44:31  6.2  0.82  69
PPM 119052     03:24:00.9 +19:54:25  8.2  0.35  69
PPM 092446     03:22:35.0 +20:08:20 10.4  0.21  69
14UU228        03:22:32.5 +19:55:35 15.0        69
Positions are for J2000

Event circumstances last updated at 2023/11/05 04:13:23 UT

Marc W. Buie, Southwest Research Institute

RECON