RECON: TNO occultation with 500829

Event between (500829) 13GT136 and star GA0760:04979529 with event index number of 220388

Geocentric closest approach at 2019/03/24 16:33:33 UTC

J2000 position of star is 14:26:28.7 -13:52:15
Equinox of date position of star is 14:27:29.0 -13:57:12
Stellar brightness G=12.0, use SENSEUP=16
Star is 14 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=24.3

TNO is 48.9 AU from the Sun and 48.1 AU from the Earth.
The TNO is moving 20.2 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 160 seconds.
The 1-sigma cross-track error in the shadow position is 2736 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.9 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 500829, (2019/03/24 16:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:12.5 -11:15:40  1.0 15.20  29
27Bet Lib      15:18:02.7 -09:27:10  2.6 13.16   5
2 Lib          14:24:27.9 -11:48:04  6.2  2.28  15
PPM 228754     14:25:38.7 -14:10:04  7.6  0.50  15
PPM 228800     14:27:39.6 -13:44:14  9.8  0.22  14
500829         14:27:31.6 -13:57:24 12.0        14
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 500829, (2019/03/24 16:34UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.20  29
27Bet Lib      15:17:00.3 -09:22:59  2.6 13.16   5
2 Lib          14:23:25.6 -11:42:52  6.2  2.28  15
PPM 228754     14:24:35.8 -14:04:53  7.6  0.50  15
PPM 228800     14:26:36.8 -13:39:06  9.8  0.22  14
500829         14:26:28.7 -13:52:15 12.0        14
Positions are for J2000

Event circumstances last updated at 2018/06/11 22:52:03 UT

Marc W. Buie, Southwest Research Institute

RECON