RECON: TNO occultation with 10SS43

Event between 10SS43 and star GA1220:00130412 with event index number of 234469

Geocentric closest approach at 2018/12/21 23:08:36 UTC

J2000 position of star is 00:44:05.1 +32:50:20
Equinox of date position of star is 00:45:05.9 +32:56:28
Stellar brightness G=14.3, use SENSEUP=64
Star is 61 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=22.0

TNO is 39.2 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 12.5 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 168 seconds.
The 1-sigma cross-track error in the shadow position is 1891 km.

The TNO has an absolute magnitude Hv=5.9
Diameter=385.5 km assuming a 5% albedo -- 31.6 sec chord
Diameter=157.4 km assuming a 30% albedo -- 12.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 10SS43, (2018/12/21 23:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.8 +45:20:56  1.3 47.55 100
57Gam1And      02:05:04.3 +42:25:12  2.3 18.37  46
31Del And      00:40:20.9 +30:57:52  3.3  2.22  62
PPM 065551     00:43:06.1 +32:42:53  7.7  0.48  62
PPM 065571     00:44:18.1 +32:59:48 10.3  0.18  61
10SS43         00:45:06.7 +32:56:33 14.3        61
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 10SS43, (2018/12/21 23:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 47.55 100
57Gam1And      02:03:54.0 +42:19:46  2.3 18.37  46
31Del And      00:39:19.9 +30:51:38  3.3  2.22  62
PPM 065551     00:42:04.7 +32:36:39  7.7  0.48  62
PPM 065571     00:43:16.7 +32:53:35 10.3  0.18  61
10SS43         00:44:05.1 +32:50:20 14.3        61
Positions are for J2000

Event circumstances last updated at 2018/09/28 17:43:19 UT

Marc W. Buie, Southwest Research Institute

RECON