RECON: TNO occultation with 13SB101

Event between 13SB101 and star GA0960:00116948 with event index number of 219092

Geocentric closest approach at 2019/07/01 03:11:40 UTC

J2000 position of star is 01:20:11.7 +06:14:27
Equinox of date position of star is 01:21:12.5 +06:20:33
Stellar brightness G=16.3, use SENSEUP=128
Star is 56 degrees from the moon. Moon is 4% illuminated.
TNO apparent brightness V=24.4

TNO is 38.8 AU from the Sun and 39.0 AU from the Earth.
The TNO is moving 11.3 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 257 seconds.
The 1-sigma cross-track error in the shadow position is 1769 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=134.3 km assuming a 5% albedo -- 11.9 sec chord
Diameter=54.8 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 
 
 

Star training set for 13SB101, (2019/07/01 03:12UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:55:43.3 +20:54:09  2.6 16.79  44
PPM 144653     01:30:04.3 +07:23:39  6.4  2.44  54
PPM 144454     01:18:36.5 +05:59:11  8.1  0.74  57
PPM 144485     01:20:45.6 +06:15:50  9.4  0.14  56
13SB101        01:21:12.7 +06:20:34 16.3        56
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 13SB101, (2019/07/01 03:12UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:54:38.5 +20:48:27  2.6 16.79  44
PPM 144653     01:29:03.1 +07:17:38  6.4  2.44  54
PPM 144454     01:17:35.6 +05:53:03  8.1  0.74  57
PPM 144485     01:19:44.7 +06:09:43  9.4  0.14  56
13SB101        01:20:11.7 +06:14:27 16.3        56
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:21:21 UT

Marc W. Buie, Southwest Research Institute

RECON