RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star UC4-545-141478 with event index number of 167359

Geocentric closest approach at 2018/12/02 23:23:48 UTC

J2000 position of star is 21:38:51.0 +18:59:56
Equinox of date position of star is 21:39:41.4 +19:04:50
Stellar brightness R=16.3, use SENSEUP=128
Star is 125 degrees from the moon. Moon is 20% illuminated.
TNO apparent brightness V=20.8

TNO is 39.2 AU from the Sun and 39.3 AU from the Earth.
The TNO is moving 17.8 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 226 seconds.
The 1-sigma cross-track error in the shadow position is 3731 km.

The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 38.9 sec chord
Diameter=282.4 km assuming a 30% albedo -- 15.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 444030, (2018/12/02 23:24UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.7 +45:20:55  1.3 28.85 107
53Eps Cyg      20:46:58.6 +34:02:31  2.5 19.01 110
PPM 113349     21:39:54.2 +20:21:06  6.0  1.27 124
PPM 140425     21:39:33.8 +19:03:43  8.2  0.05 124
444030         21:39:44.2 +19:05:06 16.3       125
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 444030, (2018/12/02 23:24UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 28.85 107
53Eps Cyg      20:46:13.2 +33:58:19  2.5 19.01 110
PPM 113349     21:39:01.4 +20:15:56  6.0  1.27 124
PPM 140425     21:38:40.7 +18:58:33  8.2  0.05 124
444030         21:38:51.0 +18:59:56 16.3       124
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:05:24 UT

Marc W. Buie, Southwest Research Institute

RECON