RECON: TNO occultation with 11UC411

Event between 11UC411 and star GA1100:00318867 with event index number of 165062

Geocentric closest approach at 2018/11/22 14:50:26 UTC

J2000 position of star is 02:55:00.2 +21:05:46
Equinox of date position of star is 02:56:04.9 +21:10:18
Stellar brightness G=10.7, use SENSEUP=4
Star is 10 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=22.7

TNO is 29.5 AU from the Sun and 28.5 AU from the Earth.
The TNO is moving 23.3 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 99 seconds.
The 1-sigma cross-track error in the shadow position is 1396 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 6.5 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 11UC411, (2018/11/22 14:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.4 +16:32:45  0.8 24.29  18
Hamal          02:08:14.6 +23:33:03  2.0 11.31  21
48Eps Ari      03:00:17.7 +21:24:53  5.6  1.01  10
PPM 092055     02:55:22.2 +20:38:31  7.9  0.56  10
PPM 092066     02:56:09.8 +20:52:33  9.0  0.30  10
PPM 092081     02:56:46.7 +21:05:22 10.3  0.18  10
11UC411        02:56:05.0 +21:10:19 10.7        10
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 11UC411, (2018/11/22 14:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 24.29  18
Hamal          02:07:10.7 +23:27:42  2.0 11.31  21
48Eps Ari      02:59:12.7 +21:20:25  5.6  1.01  10
PPM 092055     02:54:17.5 +20:33:57  7.9  0.56  10
PPM 092066     02:55:05.1 +20:48:01  9.0  0.30  10
PPM 092081     02:55:41.8 +21:00:50 10.3  0.18  10
11UC411        02:55:00.2 +21:05:46 10.7        10
Positions are for J2000

Event circumstances last updated at 2018/11/05 21:13:20 UT

Marc W. Buie, Southwest Research Institute

RECON