RECON: TNO occultation with 60620

Event between (60620) 00FD8 and star UC4-434-059617 with event index number of 209699

Geocentric closest approach at 2019/08/24 02:55:41 UTC

J2000 position of star is 14:15:31.5 -03:16:24
Equinox of date position of star is 14:16:26.6 -03:21:18
Stellar brightness R=12.7, use SENSEUP=16
Star is 146 degrees from the moon. Moon is 45% illuminated.
TNO apparent brightness V=22.4

TNO is 36.5 AU from the Sun and 36.9 AU from the Earth.
The TNO is moving 19.2 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 450 seconds.
The 1-sigma cross-track error in the shadow position is 3804 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 15.0 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 60620, (2019/08/24 02:56UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.8 -11:15:48  1.0 14.76 137
PPM 179251     14:14:41.6 -00:56:15  6.5  2.47 144
PPM 197371     14:17:31.4 -03:17:13  6.7  0.26 146
PPM 197347     14:16:18.9 -03:32:32  9.3  0.19 146
60620          14:16:32.7 -03:21:51 12.7       146
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 60620, (2019/08/24 02:56UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 14.76 137
PPM 179251     14:13:41.0 -00:50:47  6.5  2.47 144
PPM 197371     14:16:30.1 -03:11:48  6.7  0.26 146
PPM 197347     14:15:17.6 -03:27:05  9.3  0.19 146
60620          14:15:31.5 -03:16:24 12.7       146
Positions are for J2000

Event circumstances last updated at 2017/09/01 17:03:32 UT

Marc W. Buie, Southwest Research Institute

RECON