RECON: TNO occultation with 60608

Event between (60608) 00EE173 and star GA0720:05080154 with event index number of 132312

Geocentric closest approach at 2018/08/04 09:27:01 UTC

J2000 position of star is 13:48:06.6 -17:22:55
Equinox of date position of star is 13:49:06.8 -17:28:23
Stellar brightness G=13.6, use SENSEUP=64
Star is 167 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=22.7

TNO is 25.1 AU from the Sun and 25.2 AU from the Earth.
The TNO is moving 13.0 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 420 seconds.
The 1-sigma cross-track error in the shadow position is 2294 km.

The TNO has an absolute magnitude Hv=8.5
Diameter=120.2 km assuming a 5% albedo -- 9.3 sec chord
Diameter=49.1 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 60608, (2018/08/04 09:27UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:10.5 -11:15:28  1.0  8.34 165
87 Vir         13:48:26.3 -17:57:08  5.2  0.51 167
PPM 227844     13:48:16.6 -17:10:07  8.2  0.37 167
PPM 227877     13:49:56.7 -17:33:32  9.1  0.21 167
60608          13:49:07.3 -17:28:26 13.6       167
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, (2018/08/04 09:27UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  8.34 165
87 Vir         13:47:25.5 -17:51:36  5.2  0.51 167
PPM 227844     13:47:16.0 -17:04:34  8.2  0.37 167
PPM 227877     13:48:55.9 -17:28:01  9.1  0.21 167
60608          13:48:06.6 -17:22:55 13.6       167
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:18:36 UT

Marc W. Buie, Southwest Research Institute

RECON