RECON: TNO occultation with 307616

Event between (307616) 03QW90 and star GA0960:00091055 with event index number of 165926

Geocentric closest approach at 2018/11/28 15:33:01 UTC

J2000 position of star is 01:01:02.5 +06:27:56
Equinox of date position of star is 01:02:01.1 +06:33:59
Stellar brightness G=14.5, use SENSEUP=128
Star is 122 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=21.5

TNO is 43.4 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 14.9 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 188 seconds.
The 1-sigma cross-track error in the shadow position is 2387 km.

The TNO has an absolute magnitude Hv=5.0
Diameter=602.6 km assuming a 5% albedo -- 40.3 sec chord
Diameter=246.0 km assuming a 30% albedo -- 16.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 307616, (2018/11/28 15:33UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:12.7 +15:17:19  2.8 14.61 128
71Eps Psc      01:03:55.6 +07:59:29  4.3  1.50 121
PPM 144137     01:00:48.6 +06:35:05  7.7  0.30 122
PPM 144145     01:01:04.4 +06:23:28  9.8  0.29 122
PPM 144168     01:02:14.8 +06:47:02 10.5  0.22 122
307616         01:02:01.4 +06:34:01 14.5       122
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 307616, (2018/11/28 15:33UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 14.61 128
71Eps Psc      01:02:56.5 +07:53:25  4.3  1.50 121
PPM 144137     00:59:49.7 +06:29:00  7.7  0.30 122
PPM 144145     01:00:05.5 +06:17:22  9.8  0.29 122
PPM 144168     01:01:15.8 +06:40:57 10.5  0.22 122
307616         01:01:02.5 +06:27:56 14.5       122
Positions are for J2000

Event circumstances last updated at 2018/10/23 20:44:28 UT

Marc W. Buie, Southwest Research Institute

RECON