RECON: TNO occultation with 13UT17

Event between 13UT17 and star UC4-488-002063 with event index number of 220175

Geocentric closest approach at 2018/06/14 07:38:10 UTC

J2000 position of star is 01:26:01.7 +07:32:06
Equinox of date position of star is 01:26:58.0 +07:37:40
Stellar brightness R=13.1, use SENSEUP=32
Star is 67 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=24.3

TNO is 43.8 AU from the Sun and 44.3 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 319 seconds.
The 1-sigma cross-track error in the shadow position is 5104 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 9.1 sec chord
Diameter=70.9 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 13UT17, (2018/06/14 07:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:58.9 +16:32:42  0.8 47.18  20
6Bet Ari       01:55:39.8 +20:53:51  2.6 14.97  57
PPM 144653     01:30:01.0 +07:23:20  6.4  0.79  67
PPM 144642     01:29:21.1 +08:03:24  7.2  0.72  67
PPM 144613     01:27:34.9 +07:23:29  9.5  0.28  67
PPM 144614     01:27:39.2 +07:31:58 10.2  0.19  67
13UT17         01:26:59.7 +07:37:50 13.1        67
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 13UT17, (2018/06/14 07:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 47.18  20
6Bet Ari       01:54:38.5 +20:48:27  2.6 14.97  57
PPM 144653     01:29:03.1 +07:17:38  6.4  0.79  67
PPM 144642     01:28:23.1 +07:57:42  7.2  0.72  67
PPM 144613     01:26:37.0 +07:17:46  9.5  0.28  67
PPM 144614     01:26:41.2 +07:26:15 10.2  0.19  67
13UT17         01:26:01.7 +07:32:06 13.1        67
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:44:41 UT

Marc W. Buie, Southwest Research Institute

RECON