RECON: TNO occultation with 532027

Event between (532027) 13EH154 and star GA0740:04918555 with event index number of 1602989

Geocentric closest approach at 2020/08/05 01:25:59 UTC

J2000 position of star is 12:56:34.6 -14:06:01
Equinox of date position of star is 12:57:36.2 -14:12:19
Stellar brightness G=14.1, use SENSEUP=64
Star is 130 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.7

TNO is 28.0 AU from the Sun and 28.4 AU from the Earth.
The TNO is moving 18.5 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 167 seconds.
The 1-sigma cross-track error in the shadow position is 1485 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 8.2 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 532027, (2020/08/05 01:26UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:16.9 -11:16:05  1.0  7.57 125
PPM 226546     12:56:58.4 -15:26:17  6.2  1.24 129
PPM 226597     12:59:01.9 -14:27:26  8.4  0.41 129
PPM 226535     12:56:33.6 -14:12:39  9.1  0.27 130
532027         12:57:39.6 -14:12:41 14.1       129
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 532027, (2020/08/05 01:26UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  7.57 125
PPM 226546     12:55:53.2 -15:19:37  6.2  1.24 129
PPM 226597     12:57:56.8 -14:20:46  8.4  0.41 129
PPM 226535     12:55:28.6 -14:05:59  9.1  0.27 130
532027         12:56:34.6 -14:06:01 14.1       130
Positions are for J2000

Event circumstances last updated at 2019/07/02 21:45:34 UT

Marc W. Buie, Southwest Research Institute

RECON