RECON: TNO occultation with 613469

Event between (613469) 06QJ181 and star GA0980:02965838 with event index number of 2810382

Geocentric closest approach at 2029/02/13 12:11:05 UTC

J2000 position of star is 07:17:30.4 +08:17:11
Equinox of date position of star is 07:18:43.5 +08:14:40
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.2

TNO is 31.6 AU from the Sun and 30.9 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 321 seconds.
The 1-sigma cross-track error in the shadow position is 3425 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 12.3 sec chord
Diameter=94.4 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 3:1EE+3:1II
 
 
 
 
 
 
 
 

Star training set for 613469, (2029/02/13 12:11UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.9 +07:24:36  0.4 20.41 123
Alhena         06:39:23.6 +16:22:19  1.9 12.65 133
PPM 152401     07:21:21.8 +07:05:12  6.4  1.28 143
PPM 152364     07:20:21.2 +08:25:54  8.0  0.37 143
PPM 152301     07:18:25.8 +08:05:16  9.4  0.22 143
613469         07:19:05.3 +08:13:55 15.4       143
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 613469, (2029/02/13 12:11UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 20.41 123
Alhena         06:37:42.8 +16:23:56  1.9 12.65 133
PPM 152401     07:19:47.7 +07:08:33  6.4  1.28 143
PPM 152364     07:18:46.2 +08:29:12  8.0  0.37 143
PPM 152301     07:16:51.0 +08:08:30  9.4  0.22 143
613469         07:17:30.4 +08:17:11 15.4       143
Positions are for J2000

Event circumstances last updated at 2022/06/04 23:15:21 UT

Marc W. Buie, Southwest Research Institute

RECON