RECON: TNO occultation with 14WE509

Event between 14WE509 and star GA1020:03501503 with event index number of 270125

Geocentric closest approach at 2019/12/03 19:51:17 UTC

J2000 position of star is 11:37:49.1 +12:44:01
Equinox of date position of star is 11:38:48.3 +12:37:41
Stellar brightness G=16.0, use SENSEUP=128
Star is 166 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=22.7

TNO is 33.7 AU from the Sun and 33.8 AU from the Earth.
The TNO is moving 11.2 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 236 seconds.
The 1-sigma cross-track error in the shadow position is 1366 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 19.2 sec chord
Diameter=87.7 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 14WE509, (2019/12/03 19:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:25.9 +11:52:09  1.3 21.85 172
Denebola       11:50:04.5 +14:27:38  2.1  3.29 163
PPM 128566     11:49:40.1 +14:10:24  6.0  3.05 163
PPM 128419     11:39:02.3 +12:50:48  8.4  0.23 166
14WE509        11:38:50.9 +12:37:24 16.0       165
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 14WE509, (2019/12/03 19:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 21.85 172
Denebola       11:49:02.9 +14:34:17  2.1  3.29 163
PPM 128566     11:48:38.5 +14:17:03  6.0  3.05 163
PPM 128419     11:38:00.5 +12:57:26  8.4  0.23 166
14WE509        11:37:49.1 +12:44:01 16.0       166
Positions are for J2000

Event circumstances last updated at 2019/01/30 20:39:33 UT

Marc W. Buie, Southwest Research Institute

RECON