RECON: TNO occultation with 11UE412

Event between 11UE412 and star UC4-521-004333 with event index number of 319004

Geocentric closest approach at 2019/10/26 14:50:31 UTC

J2000 position of star is 02:34:17.7 +14:02:53
Equinox of date position of star is 02:35:19.5 +14:07:47
Stellar brightness R=16.3, use SENSEUP=128
Star is 151 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=23.6

TNO is 48.4 AU from the Sun and 47.4 AU from the Earth.
The TNO is moving 26.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 208 seconds.
The 1-sigma cross-track error in the shadow position is 3692 km.

The TNO has an absolute magnitude Hv=6.8
Diameter=269.2 km assuming a 5% albedo -- 10.3 sec chord
Diameter=109.9 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 11UE412, (2019/10/26 14:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.6 +16:32:51  0.8 29.41 122
Hamal          02:08:17.7 +23:33:19  2.0 11.39 150
29 Ari         02:33:59.4 +15:07:17  6.0  1.04 150
PPM 118367     02:37:06.4 +13:50:26  7.6  0.51 150
PPM 118355     02:36:20.1 +13:45:17  9.7  0.44 151
PPM 118334     02:34:46.9 +14:29:55 11.1  0.39 151
11UE412        02:35:22.8 +14:08:03 16.3       150
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 11UE412, (2019/10/26 14:51UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 29.41 122
Hamal          02:07:10.7 +23:27:42  2.0 11.39 150
29 Ari         02:32:54.1 +15:02:05  6.0  1.04 150
PPM 118367     02:36:01.3 +13:45:18  7.6  0.51 150
PPM 118355     02:35:15.1 +13:40:08  9.7  0.44 151
PPM 118334     02:33:41.7 +14:24:44 11.1  0.39 151
11UE412        02:34:17.7 +14:02:53 16.3       151
Positions are for J2000

Event circumstances last updated at 2018/10/24 22:02:37 UT

Marc W. Buie, Southwest Research Institute

RECON