RECON: TNO occultation with 612951

Event between (612951) 05EB299 and star GA0720:05539239 with event index number of 2819905

Geocentric closest approach at 2029/04/14 14:07:09 UTC

J2000 position of star is 14:56:51.1 -17:26:44
Equinox of date position of star is 14:58:08.4 -17:32:13
Stellar brightness G=11.8, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=23.2

TNO is 30.2 AU from the Sun and 29.2 AU from the Earth.
The TNO is moving 21.2 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 286 seconds.
The 1-sigma cross-track error in the shadow position is 2789 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=124.7 km assuming a 5% albedo -- 5.9 sec chord
Diameter=50.9 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 612951, (2029/04/14 14:07UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:44.4 -11:18:47  1.0 23.05 171
27Bet Lib      15:18:35.3 -09:29:21  2.6  9.43 159
PPM 229408     14:53:30.3 -18:28:27  6.2  1.50 166
PPM 229553     14:59:43.9 -17:28:48  6.9  0.31 165
PPM 229511     14:57:53.6 -17:36:32  9.6  0.15 165
612951         14:58:29.8 -17:33:43 11.8       165
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 612951, (2029/04/14 14:07UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 23.05 171
27Bet Lib      15:17:00.3 -09:22:59  2.6  9.43 159
PPM 229408     14:51:51.3 -18:21:19  6.2  1.50 166
PPM 229553     14:58:05.2 -17:21:51  6.9  0.31 165
PPM 229511     14:56:14.9 -17:29:32  9.6  0.15 165
612951         14:56:51.1 -17:26:44 11.8       165
Positions are for J2000

Event circumstances last updated at 2022/12/12 04:01:07 UT

Marc W. Buie, Southwest Research Institute

RECON