RECON: TNO occultation with 10199

Event between (10199) Chariklo and star GA0640:38074330 with event index number of 186926

Geocentric closest approach at 2019/04/10 15:32:59 UTC

J2000 position of star is 19:47:12.8 -25:27:43
Equinox of date position of star is 19:48:21.1 -25:24:53
Stellar brightness G=15.7, use SENSEUP=128
Star is 149 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=19.0

TNO is 16.1 AU from the Sun and 16.2 AU from the Earth.
The TNO is moving 9.1 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 209 seconds.
The 1-sigma cross-track error in the shadow position is 1541 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 31.8 sec chord
Diameter=117.7 km assuming a 30% albedo -- 13.0 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 10199, (2019/04/10 15:33UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:42.7 -29:31:11  1.2 42.13 107
38Zet Sgr      19:03:50.2 -29:51:03  2.7 10.81 158
58Ome Sgr      19:57:01.0 -26:14:49  4.1  2.11 147
PPM 270278     19:48:49.9 -25:34:39  7.8  0.19 148
10199          19:48:23.0 -25:24:48 15.7       148
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, (2019/04/10 15:33UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 42.13 107
38Zet Sgr      19:02:36.7 -29:52:49  2.7 10.81 158
58Ome Sgr      19:55:50.7 -26:17:57  4.1  2.11 147
PPM 270278     19:47:39.6 -25:37:35  7.8  0.19 148
10199          19:47:12.8 -25:27:43 15.7       148
Positions are for J2000

Event circumstances last updated at 2018/10/04 19:04:37 UT

Marc W. Buie, Southwest Research Institute

RECON