RECON: TNO occultation with 15BA519

Event between 15BA519 and star GA0780:04500735 with event index number of 193572

Geocentric closest approach at 2019/05/20 11:33:59 UTC

J2000 position of star is 14:10:06.7 -10:24:28
Equinox of date position of star is 14:11:08.0 -10:29:50
Stellar brightness G=16.4, use SENSEUP=128
Star is 45 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=22.7

TNO is 31.2 AU from the Sun and 30.2 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 93 seconds.
The 1-sigma cross-track error in the shadow position is 1247 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=175.4 km assuming a 5% albedo -- 8.4 sec chord
Diameter=71.6 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15BA519, (2019/05/20 11:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.0 -11:15:43  1.0 11.06  55
96 Vir         14:10:02.7 -10:25:32  6.4  0.28  45
PPM 228383     14:11:00.5 -10:17:40  9.4  0.21  45
15BA519        14:11:08.8 -10:29:55 16.4        45
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 15BA519, (2019/05/20 11:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 11.06  55
96 Vir         14:09:00.6 -10:20:04  6.4  0.28  45
PPM 228383     14:09:58.4 -10:12:13  9.4  0.21  45
15BA519        14:10:06.7 -10:24:28 16.4        45
Positions are for J2000

Event circumstances last updated at 2019/02/12 07:59:01 UT

Marc W. Buie, Southwest Research Institute

RECON