RECON: TNO occultation with 10199

Event between (10199) Chariklo and star GA0660:38326524 with event index number of 271646

Geocentric closest approach at 2020/06/26 03:45:30 UTC

J2000 position of star is 20:01:20.9 -22:22:03
Equinox of date position of star is 20:02:33.6 -22:18:35
Stellar brightness G=15.8, use SENSEUP=128
Star is 142 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=22.2

TNO is 16.4 AU from the Sun and 15.5 AU from the Earth.
The TNO is moving 20.6 km/sec on the sky relative to the star, or, 6.6 arcsec/hr.
The 1-sigma error in the time of the event is 35 seconds.
The 1-sigma cross-track error in the shadow position is 646 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=275.4 km assuming a 5% albedo -- 2.9 sec chord
Diameter=112.4 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10199, (2020/06/26 03:46UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:46.7 -29:30:48  1.2 40.04 164
38Zet Sgr      19:03:54.8 -29:50:57  2.7 15.15 128
PPM 270580     20:02:36.7 -22:40:46  6.0  0.37 142
PPM 270586     20:02:50.7 -22:03:12  8.3  0.26 142
PPM 270560     20:01:57.8 -22:26:12  9.7  0.19 141
10199          20:02:33.6 -22:18:35 15.8       142
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 10199, (2020/06/26 03:46UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 40.04 164
38Zet Sgr      19:02:36.7 -29:52:49  2.7 15.15 128
PPM 270580     20:01:23.9 -22:44:15  6.0  0.37 142
PPM 270586     20:01:38.2 -22:06:40  8.3  0.26 142
PPM 270560     20:00:45.1 -22:29:40  9.7  0.19 141
10199          20:01:20.9 -22:22:03 15.8       142
Positions are for J2000

Event circumstances last updated at 2020/06/25 21:29:00 UT

Marc W. Buie, Southwest Research Institute

RECON