RECON: TNO occultation with 14WO509

Event between 14WO509 and star GA0980:03677190 with event index number of 252863

Geocentric closest approach at 2020/04/01 14:05:34 UTC

J2000 position of star is 11:12:42.2 +08:35:25
Equinox of date position of star is 11:13:41.5 +08:29:12
Stellar brightness G=16.4, use SENSEUP=128
Star is 62 degrees from the moon. Moon is 52% illuminated.
TNO apparent brightness V=22.2

TNO is 39.9 AU from the Sun and 39.1 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 154 seconds.
The 1-sigma cross-track error in the shadow position is 1929 km.

The TNO has an absolute magnitude Hv=6.2
Diameter=363.1 km assuming a 5% albedo -- 15.6 sec chord
Diameter=148.2 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 14WO509, (2020/04/01 14:06UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:26.9 +11:52:03  1.3 16.18  46
Denebola       11:50:05.5 +14:27:32  2.1 10.72  68
63Chi Leo      11:06:03.7 +07:13:34  4.6  2.28  60
PPM 157649     11:15:04.9 +07:56:59  7.1  0.62  62
PPM 157619     11:13:08.5 +08:04:48  9.8  0.43  62
PPM 157630     11:14:03.2 +08:29:00 10.4  0.07  62
14WO509        11:13:45.3 +08:28:48 16.4        62
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 14WO509, (2020/04/01 14:06UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 16.18  46
Denebola       11:49:02.9 +14:34:17  2.1 10.72  68
63Chi Leo      11:05:00.6 +07:20:09  4.6  2.28  60
PPM 157649     11:14:01.9 +08:03:37  7.1  0.62  62
PPM 157619     11:12:05.4 +08:11:25  9.8  0.43  62
PPM 157630     11:13:00.1 +08:35:37 10.4  0.07  62
14WO509        11:12:42.2 +08:35:25 16.4        62
Positions are for J2000

Event circumstances last updated at 2019/01/18 19:47:46 UT

Marc W. Buie, Southwest Research Institute

RECON