RECON: TNO occultation with 119473

Event between (119473) 01UO18 and star GA1160:01483047 with event index number of 2525363

Geocentric closest approach at 2028/12/22 16:42:07 UTC

J2000 position of star is 05:40:13.4 +26:15:04
Equinox of date position of star is 05:41:43.8 +26:15:45
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 97 degrees from the moon. Moon is 39% illuminated.
Apparent brightness V=22.6

Object is 28.3 AU from the Sun and 27.3 AU from the Earth.
Apparent velocity is 23.8 km/sec on the sky relative to the star, or, 4.3 arcsec/hr.
The 1-sigma error in the time of the event is 352 seconds.
The 1-sigma cross-track error in the shadow position is 1422 km.

The object has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.0 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 119473, (2028/12/22 16:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:35.2 +16:33:56  0.8 17.83  82
Alnath         05:28:07.6 +28:37:46  1.6  3.89  94
125 Tau        05:41:32.1 +25:54:38  5.2  0.37  97
PPM 094610     05:40:45.8 +26:37:56  7.4  0.46  97
PPM 094663     05:42:52.3 +26:08:25  9.0  0.23  97
119473         05:42:01.5 +26:15:52 16.4        97
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 119473, (2028/12/22 16:42UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.83  82
Alnath         05:26:17.6 +28:36:23  1.6  3.89  94
125 Tau        05:39:44.2 +25:53:49  5.2  0.37  97
PPM 094610     05:38:57.4 +26:37:05  7.4  0.46  97
PPM 094663     05:41:04.3 +26:07:40  9.0  0.23  97
119473         05:40:13.4 +26:15:04 16.4        97
Positions are for J2000

Event circumstances last updated at 2024/03/21 22:36:17 UT

Marc W. Buie, Southwest Research Institute

RECON