RECON: TNO occultation with 10199

Event between (10199) Chariklo and star GA0700:33982965 with event index number of 1089561

Geocentric closest approach at 2021/11/19 23:20:01 UTC

J2000 position of star is 20:07:58.2 -19:03:48
Equinox of date position of star is 20:09:13.8 -18:59:55
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 124 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=19.2

TNO is 16.8 AU from the Sun and 17.2 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 33 seconds.
The 1-sigma cross-track error in the shadow position is 661 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=292.4 km assuming a 5% albedo -- 14.0 sec chord
Diameter=119.4 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10199, (2021/11/19 23:20UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.3 -29:30:21  1.2 39.83  91
Nunki          18:56:37.2 -26:16:03  2.0 18.24 142
7Sig Cap       20:20:39.2 -19:02:55  5.3  2.70 122
PPM 236986     20:09:28.8 -18:44:21  7.4  0.27 124
PPM 236978     20:09:05.2 -19:07:59  9.2  0.14 124
10199          20:09:14.1 -18:59:55 15.4       124
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, (2021/11/19 23:20UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 39.83  91
Nunki          18:55:15.9 -26:17:49  2.0 18.24 142
7Sig Cap       20:19:23.6 -19:07:07  5.3  2.70 122
PPM 236986     20:08:13.0 -18:48:14  7.4  0.27 124
PPM 236978     20:07:49.3 -19:11:52  9.2  0.14 124
10199          20:07:58.2 -19:03:48 15.4       124
Positions are for J2000

Event circumstances last updated at 2021/10/25 23:21:01 UT

Marc W. Buie, Southwest Research Institute

RECON