RECON: TNO occultation with 07UM126

Event between 07UM126 and star GA0720:00611689 with event index number of 211787

Geocentric closest approach at 2019/09/26 21:56:05 UTC

J2000 position of star is 05:46:43.5 -17:56:10
Equinox of date position of star is 05:47:33.9 -17:55:48
Stellar brightness G=11.1, use SENSEUP=8
Star is 79 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.8

TNO is 16.5 AU from the Sun and 16.4 AU from the Earth.
The TNO is moving 20.1 km/sec on the sky relative to the star, or, 6.1 arcsec/hr.
The 1-sigma error in the time of the event is 30 seconds.
The 1-sigma cross-track error in the shadow position is 1047 km.

The TNO has an absolute magnitude Hv=10.3
Diameter=52.7 km assuming a 5% albedo -- 2.6 sec chord
Diameter=21.5 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 07UM126, (2019/09/26 21:56UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:29.2 -08:10:49  0.1 12.49  84
Arneb          05:33:36.1 -17:48:34  2.6  3.33  82
PPM 216182     05:44:13.5 -18:32:59  5.7  1.01  80
PPM 216239     05:46:38.6 -17:24:37  8.4  0.57  79
PPM 216264     05:47:32.8 -17:42:52  9.2  0.22  79
07UM126        05:47:35.7 -17:55:48 11.1        79
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 07UM126, (2019/09/26 21:56UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 12.49  84
Arneb          05:32:43.8 -17:49:20  2.6  3.33  82
PPM 216182     05:43:21.7 -18:33:27  5.7  1.01  80
PPM 216239     05:45:46.2 -17:25:01  8.4  0.57  79
PPM 216264     05:46:40.6 -17:43:14  9.2  0.22  79
07UM126        05:46:43.5 -17:56:10 11.1        79
Positions are for J2000

Event circumstances last updated at 2019/01/28 21:48:24 UT

Marc W. Buie, Southwest Research Institute

RECON