RECON: TNO occultation with 11UQ62

Event between 11UQ62 and star GA1100:01140627 with event index number of 315173

Geocentric closest approach at 2020/08/28 04:28:30 UTC

J2000 position of star is 05:29:43.0 +21:18:16
Equinox of date position of star is 05:30:55.6 +21:19:08
Stellar brightness G=12.6, use SENSEUP=16
Star is 167 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=22.4

TNO is 16.2 AU from the Sun and 16.5 AU from the Earth.
The TNO is moving 17.7 km/sec on the sky relative to the star, or, 5.3 arcsec/hr.
The 1-sigma error in the time of the event is 51 seconds.
The 1-sigma cross-track error in the shadow position is 624 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=71.1 km assuming a 5% albedo -- 3.4 sec chord
Diameter=29.0 km assuming a 30% albedo -- 1.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 11UQ62, (2020/08/28 04:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:06.5 +16:32:57  0.8 13.59 153
Alnath         05:27:36.0 +28:37:23  1.6  7.34 166
114 Tau        05:28:52.6 +21:57:11  4.7  0.80 166
PPM 094420     05:31:28.8 +20:33:57  7.1  0.76 167
PPM 094403     05:30:29.8 +21:19:51  8.7  0.11 167
11UQ62         05:30:57.2 +21:19:09 12.6       167
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 11UQ62, (2020/08/28 04:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.59 153
Alnath         05:26:17.5 +28:36:23  1.6  7.34 166
114 Tau        05:27:38.1 +21:56:13  4.7  0.80 166
PPM 094420     05:30:15.0 +20:33:05  7.1  0.76 167
PPM 094403     05:29:15.6 +21:18:57  8.7  0.11 167
11UQ62         05:29:43.0 +21:18:16 12.6       167
Positions are for J2000

Event circumstances last updated at 2020/03/10 21:56:56 UT

Marc W. Buie, Southwest Research Institute

RECON