RECON: TNO occultation with 523727

Event between (523727) 14NW65 and star UC4-482-129177 with event index number of 306539

Geocentric closest approach at 2019/09/18 15:00:42 UTC

J2000 position of star is 21:33:56.9 +06:19:12
Equinox of date position of star is 21:34:53.1 +06:24:15
Stellar brightness R=14.7, use SENSEUP=128
Star is 79 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=20.3

TNO is 23.2 AU from the Sun and 22.3 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 49 seconds.
The 1-sigma cross-track error in the shadow position is 989 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 13.3 sec chord
Diameter=117.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523727, (2019/09/18 15:01UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:36.4 +38:48:11  0.0 51.40 107
Markab         23:05:44.7 +15:18:42  2.5 23.98  55
4 Peg          21:39:31.2 +05:51:42  5.9  1.27  78
PPM 171873     21:32:41.8 +06:50:16  8.5  0.70  79
PPM 171926     21:34:57.9 +06:15:21  9.9  0.15  79
523727         21:34:55.8 +06:24:30 14.7        79
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 523727, (2019/09/18 15:01UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 51.40 107
Markab         23:04:45.7 +15:12:18  2.5 23.98  55
4 Peg          21:38:32.1 +05:46:19  5.9  1.27  78
PPM 171873     21:31:43.1 +06:45:00  8.5  0.70  79
PPM 171926     21:33:59.0 +06:10:03  9.9  0.15  79
523727         21:33:56.9 +06:19:12 14.7        79
Positions are for J2000

Event circumstances last updated at 2018/10/25 20:30:45 UT

Marc W. Buie, Southwest Research Institute

RECON