RECON: TNO occultation with 11UC411

Event between 11UC411 and star GA1100:00329663 with event index number of 244051

Geocentric closest approach at 2020/01/30 00:22:43 UTC

J2000 position of star is 03:01:23.7 +21:17:34
Equinox of date position of star is 03:02:28.6 +21:21:58
Stellar brightness G=16.4, use SENSEUP=128
Star is 44 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=22.9

TNO is 29.6 AU from the Sun and 29.4 AU from the Earth.
The TNO is moving 2.4 km/sec on the sky relative to the star, or, 0.4 arcsec/hr.
The 1-sigma error in the time of the event is 1029 seconds.
The 1-sigma cross-track error in the shadow position is 1216 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 62.0 sec chord
Diameter=61.8 km assuming a 30% albedo -- 25.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 11UC411, (2020/01/30 00:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.5 +16:32:53  0.8 22.84  63
Hamal          02:08:18.6 +23:33:23  2.0 12.71  35
48Eps Ari      03:00:21.8 +21:25:10  5.6  0.51  43
PPM 092121     03:00:02.4 +21:41:49  6.8  0.67  43
PPM 092127     03:00:50.5 +21:36:29  9.2  0.46  43
PPM 092137     03:01:46.1 +21:07:09 10.5  0.31  43
11UC411        03:02:32.9 +21:22:16 16.4        44
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, (2020/01/30 00:23UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.84  63
Hamal          02:07:10.7 +23:27:42  2.0 12.71  35
48Eps Ari      02:59:12.7 +21:20:25  5.6  0.51  43
PPM 092121     02:58:53.1 +21:37:04  6.8  0.67  43
PPM 092127     02:59:41.2 +21:31:45  9.2  0.46  43
PPM 092137     03:00:37.0 +21:02:25 10.5  0.31  43
11UC411        03:01:23.7 +21:17:34 16.4        44
Positions are for J2000

Event circumstances last updated at 2018/11/05 21:21:35 UT

Marc W. Buie, Southwest Research Institute

RECON