RECON: TNO occultation with 05RQ43

Event between 05RQ43 and star UC4-502-004550 with event index number of 89546

Geocentric closest approach at 2017/12/02 12:13:46 UTC

J2000 position of star is 03:06:26.1 +10:21:23
Equinox of date position of star is 03:07:20.4 +10:25:12
Stellar brightness R=13.9
Star is 7 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.6

TNO is 39.8 AU from the Sun and 38.9 AU from the Earth.
The TNO is moving 23.3 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 159 seconds.
The 1-sigma cross-track error in the shadow position is 3809 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=292.4 km assuming a 5% albedo -- 13.2 sec chord
Diameter=119.4 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 05RQ43, (2017/12/02 12:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.1 +16:32:38  0.8 22.59  15
Menkar         03:03:13.1 +04:09:33  2.5  6.35  12
PPM 118883     03:11:37.6 +11:56:22  5.8  1.83   6
PPM 118797     03:06:01.9 +10:51:31  8.3  0.55   7
PPM 118848     03:09:29.3 +10:30:48  9.2  0.52   7
PPM 118802     03:06:15.8 +10:22:37 10.1  0.29   8
05RQ43         03:07:24.4 +10:25:29 13.9         7
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 05RQ43, (2017/12/02 12:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.59  15
Menkar         03:02:16.8 +04:05:22  2.5  6.35  12
PPM 118883     03:10:38.8 +11:52:20  5.8  1.83   6
PPM 118797     03:05:03.5 +10:47:23  8.3  0.55   7
PPM 118848     03:08:31.0 +10:26:44  9.2  0.52   7
PPM 118802     03:05:17.5 +10:18:29 10.1  0.29   8
05RQ43         03:06:26.1 +10:21:23 13.9         7
Positions are for J2000

Event circumstances last updated at 2016/09/02 18:16:10 UT

Marc W. Buie, Southwest Research Institute

RECON