RECON: TNO occultation with 00CO104

Event between 00CO104 and star TYC26139-00659-1 with event index number of 186078

Geocentric closest approach at 2019/04/29 20:08:17 UTC

J2000 position of star is 14:16:44.8 -16:03:09
Equinox of date position of star is 14:17:41.9 -16:07:56
Stellar brightness V=9.8, use SENSEUP=2
Star is 123 degrees from the moon. Moon is 24% illuminated.
TNO apparent brightness V=23.7

TNO is 23.4 AU from the Sun and 22.4 AU from the Earth.
The TNO is moving 23.4 km/sec on the sky relative to the star, or, 5.2 arcsec/hr.
The 1-sigma error in the time of the event is 228 seconds.
The 1-sigma cross-track error in the shadow position is 2666 km.

The TNO has an absolute magnitude Hv=10.1
Diameter=57.8 km assuming a 5% albedo -- 2.5 sec chord
Diameter=23.6 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 00CO104, (2019/04/29 20:08UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:12.8 -11:15:42  1.0 13.44 137
PPM 228402     14:11:54.0 -16:23:33  4.2  1.44 124
PPM 228540     14:16:53.8 -16:10:13  8.0  0.22 123
PPM 228558     14:17:48.4 -16:08:29  9.4  0.00 123
00CO104        14:17:48.4 -16:08:29  9.8       123
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 00CO104, (2019/04/29 20:08UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 13.44 137
PPM 228402     14:10:50.5 -16:18:08  4.2  1.44 124
PPM 228540     14:15:50.2 -16:04:53  8.0  0.22 123
PPM 228558     14:16:44.8 -16:03:09  9.4  0.00 123
00CO104        14:16:44.8 -16:03:09  9.8       123
Positions are for J2000

Event circumstances last updated at 2017/05/01 17:21:08 UT

Marc W. Buie, Southwest Research Institute

RECON