RECON: TNO occultation with 60608

Event between (60608) 00EE173 and star GA0680:05964058 with event index number of 2248901

Geocentric closest approach at 2022/06/16 01:11:39 UTC

J2000 position of star is 14:40:57.7 -21:37:27
Equinox of date position of star is 14:42:13.6 -21:43:06
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 62 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=22.9

TNO is 26.8 AU from the Sun and 26.0 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 85 seconds.
The 1-sigma cross-track error in the shadow position is 1046 km.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 7.6 sec chord
Diameter=49.8 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 60608, (2022/06/16 01:12UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:22.8 -11:16:40  1.0 20.94  83
27Bet Lib      15:18:13.1 -09:27:52  2.6 15.00  59
PPM 263395     14:48:30.5 -21:25:04  5.9  1.49  61
PPM 263205     14:40:11.6 -22:25:28  7.7  0.85  63
PPM 263226     14:41:08.3 -21:46:06  8.8  0.26  63
60608          14:42:14.5 -21:43:09 16.6        62
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 60608, (2022/06/16 01:12UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 20.94  83
27Bet Lib      15:17:00.3 -09:22:59  2.6 15.00  59
PPM 263395     14:47:13.6 -21:19:29  5.9  1.49  61
PPM 263205     14:38:54.6 -22:19:43  7.7  0.85  63
PPM 263226     14:39:51.6 -21:40:22  8.8  0.26  63
60608          14:40:57.7 -21:37:27 16.6        62
Positions are for J2000

Event circumstances last updated at 2022/03/16 00:55:23 UT

Marc W. Buie, Southwest Research Institute

RECON