RECON: TNO occultation with 524457

Event between (524457) 02FW6 and star GA0760:05213886 with event index number of 2750240

Geocentric closest approach at 2029/05/11 14:51:44 UTC

J2000 position of star is 14:39:46.8 -12:01:23
Equinox of date position of star is 14:41:01.6 -12:07:14
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=23.5

TNO is 38.2 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 438 seconds.
The 1-sigma cross-track error in the shadow position is 3985 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=190.6 km assuming a 5% albedo -- 7.2 sec chord
Diameter=77.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 524457, (2029/05/11 14:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:44.7 -11:18:49  1.0 18.28 174
27Bet Lib      15:18:35.5 -09:29:21  2.6  9.52 156
PPM 229046     14:38:34.2 -12:25:45  6.2  0.74 167
PPM 229091     14:40:51.5 -11:43:12  8.5  0.45 166
PPM 229107     14:41:23.4 -12:21:40  9.7  0.21 166
524457         14:41:22.5 -12:08:52 16.2       166
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 524457, (2029/05/11 14:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 18.28 174
27Bet Lib      15:17:00.3 -09:22:59  2.6  9.52 156
PPM 229046     14:36:58.4 -12:18:11  6.2  0.74 167
PPM 229091     14:39:16.0 -11:35:41  8.5  0.45 166
PPM 229107     14:39:47.6 -12:14:10  9.7  0.21 166
524457         14:39:46.8 -12:01:23 16.2       166
Positions are for J2000

Event circumstances last updated at 2022/12/12 05:11:25 UT

Marc W. Buie, Southwest Research Institute

RECON