RECON: TNO occultation with 13KZ18

Event between 13KZ18 and star GA1080:18095761 with event index number of 357376

Geocentric closest approach at 2018/10/27 17:39:12 UTC

J2000 position of star is 22:44:34.9 +18:09:36
Equinox of date position of star is 22:45:30.1 +18:15:33
Stellar brightness G=15.3, use SENSEUP=128
Star is 85 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=21.9

TNO is 19.0 AU from the Sun and 18.4 AU from the Earth.
The TNO is moving 14.8 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 75 seconds.
The 1-sigma cross-track error in the shadow position is 1167 km.

The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 6.6 sec chord
Diameter=39.9 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 13KZ18, (2018/10/27 17:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.5 +45:20:54  1.3 37.27  97
Markab         23:05:42.0 +15:18:25  2.5  5.66  81
45 Peg         22:46:23.2 +19:27:58  6.3  1.22  84
PPM 141848     22:48:16.8 +17:54:42  8.2  0.75  84
PPM 141800     22:45:48.5 +18:07:41  9.0  0.15  85
13KZ18         22:45:30.1 +18:15:34 15.3        85
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 13KZ18, (2018/10/27 17:39UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 37.27  97
Markab         23:04:45.7 +15:12:18  2.5  5.66  81
45 Peg         22:45:28.1 +19:22:01  6.3  1.22  84
PPM 141848     22:47:21.4 +17:48:43  8.2  0.75  84
PPM 141800     22:44:53.3 +18:01:43  9.0  0.15  85
13KZ18         22:44:34.9 +18:09:36 15.3        85
Positions are for J2000

Event circumstances last updated at 2018/10/23 20:41:39 UT

Marc W. Buie, Southwest Research Institute

RECON