RECON: TNO occultation with 10199

Event between (10199) Chariklo and star UC4-323-212924 with event index number of 190399

Geocentric closest approach at 2019/05/14 08:06:10 UTC

J2000 position of star is 19:47:22.5 -25:24:04
Equinox of date position of star is 19:48:26.0 -25:21:26
Stellar brightness R=16.5, use SENSEUP=128
Star is 121 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=18.9

TNO is 16.2 AU from the Sun and 15.6 AU from the Earth.
The TNO is moving 7.4 km/sec on the sky relative to the star, or, 2.3 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 2246 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 39.0 sec chord
Diameter=117.7 km assuming a 30% albedo -- 15.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10199, (2019/05/14 08:06UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.0 -29:31:09  1.2 42.11 155
38Zet Sgr      19:03:50.5 -29:51:03  2.7 10.87 110
58Ome Sgr      19:57:01.3 -26:14:48  4.1  2.11 122
PPM 270278     19:48:50.2 -25:34:38  7.8  0.23 121
10199          19:48:33.0 -25:21:08 16.5       121
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, (2019/05/14 08:06UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 42.11 155
38Zet Sgr      19:02:36.7 -29:52:49  2.7 10.87 110
58Ome Sgr      19:55:50.6 -26:17:57  4.1  2.11 122
PPM 270278     19:47:39.6 -25:37:35  7.8  0.23 121
10199          19:47:22.5 -25:24:04 16.5       121
Positions are for J2000

Event circumstances last updated at 2017/06/14 17:04:04 UT

Marc W. Buie, Southwest Research Institute

RECON