RECON: TNO occultation with 10VR11

Event between 10VR11 and star GA1080:00947166 with event index number of 1024576

Geocentric closest approach at 2020/12/11 23:18:36 UTC

J2000 position of star is 05:19:50.1 +19:18:41
Equinox of date position of star is 05:21:04.1 +19:19:53
Stellar brightness G=16.9, use SENSEUP=128
Star is 143 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=21.2

TNO is 36.7 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 26.0 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 113 seconds.
The 1-sigma cross-track error in the shadow position is 2263 km.

The TNO has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 17.6 sec chord
Diameter=186.6 km assuming a 30% albedo -- 7.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 10VR11, (2020/12/11 23:19UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.5 +16:32:59  0.8 10.81 153
Alnath         05:27:37.1 +28:37:23  1.6  9.41 140
PPM 120839     05:21:32.5 +19:35:52  6.5  0.29 143
10VR11         05:21:04.2 +19:19:53 16.9       142
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 10VR11, (2020/12/11 23:19UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.81 153
Alnath         05:26:17.5 +28:36:23  1.6  9.41 140
PPM 120839     05:20:18.3 +19:34:41  6.5  0.29 143
10VR11         05:19:50.1 +19:18:41 16.9       143
Positions are for J2000

Event circumstances last updated at 2020/12/02 11:40:36 UT

Marc W. Buie, Southwest Research Institute

RECON