RECON: TNO occultation with 480017

Event between (480017) 14QB442 and star UC4-484-002724 with event index number of 164221

Geocentric closest approach at 2018/07/07 03:54:22 UTC

J2000 position of star is 02:00:12.7 +06:38:50
Equinox of date position of star is 02:01:06.0 +06:43:43
Stellar brightness R=15.5
Star is 5 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=22.4

TNO is 40.1 AU from the Sun and 40.4 AU from the Earth.
The TNO is moving 13.4 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 246 seconds.
The 1-sigma cross-track error in the shadow position is 2413 km.

The TNO has an absolute magnitude Hv=6.2
Diameter=346.7 km assuming a 5% albedo -- 26.0 sec chord
Diameter=141.6 km assuming a 30% albedo -- 10.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 480017, (2018/07/07 03:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:59.1 +16:32:42  0.8 39.31  45
68Omi Cet      02:20:17.0 -02:53:40  2.0 10.75  12
112 Psc        02:01:07.0 +03:11:06  6.2  3.55   5
PPM 145171     01:59:54.9 +06:45:48  8.5  0.32   5
PPM 145184     02:00:25.7 +06:33:45  9.2  0.26   5
480017         02:01:11.0 +06:44:11 15.5         5
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 480017, (2018/07/07 03:54UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 39.31  45
68Omi Cet      02:19:20.8 -02:58:44  2.0 10.75  12
112 Psc        02:00:09.4 +03:05:45  6.2  3.55   5
PPM 145171     01:58:56.6 +06:40:26  8.5  0.32   5
PPM 145184     01:59:27.4 +06:28:24  9.2  0.26   5
480017         02:00:12.7 +06:38:50 15.5         5
Positions are for J2000

Event circumstances last updated at 2016/12/01 19:09:18 UT

Marc W. Buie, Southwest Research Institute

RECON