RECON: TNO occultation with 482824

Event between (482824) 13XC26 and star GA1260:03307993 with event index number of 266305

Geocentric closest approach at 2020/05/04 01:31:01 UTC

J2000 position of star is 08:31:41.9 +37:42:11
Equinox of date position of star is 08:32:59.7 +37:38:03
Stellar brightness G=15.0, use SENSEUP=128
Star is 56 degrees from the moon. Moon is 84% illuminated.
TNO apparent brightness V=20.3

TNO is 36.9 AU from the Sun and 37.1 AU from the Earth.
The TNO is moving 14.2 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 177 seconds.
The 1-sigma cross-track error in the shadow position is 3560 km.

The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 55.8 sec chord
Diameter=324.3 km assuming a 30% albedo -- 22.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 482824, (2020/05/04 01:31UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:33.5 +27:58:32  1.1 13.71  63
PPM 073799     08:34:14.0 +37:56:42  5.9  0.39  56
PPM 073770     08:32:38.8 +37:11:41  6.0  0.44  56
PPM 073790     08:33:48.3 +37:25:07  9.8  0.27  56
PPM 073779     08:33:12.8 +37:37:24 10.2  0.04  56
482824         08:33:01.0 +37:37:59 15.0        56
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 482824, (2020/05/04 01:31UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 13.71  63
PPM 073799     08:32:54.8 +38:00:56  5.9  0.39  56
PPM 073770     08:31:20.0 +37:15:52  6.0  0.44  56
PPM 073790     08:32:29.4 +37:29:20  9.8  0.27  56
PPM 073779     08:31:53.8 +37:41:36 10.2  0.04  56
482824         08:31:41.9 +37:42:11 15.0        56
Positions are for J2000

Event circumstances last updated at 2019/12/31 22:04:22 UT

Marc W. Buie, Southwest Research Institute

RECON