RECON: TNO occultation with 02GY32

Event between 02GY32 and star UC4-348-080910 with event index number of 186287

Geocentric closest approach at 2019/04/08 23:48:45 UTC

J2000 position of star is 16:10:25.1 -20:28:59
Equinox of date position of star is 16:11:26.2 -20:31:38
Stellar brightness R=15.4, use SENSEUP=128
Star is 176 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=22.8

TNO is 36.7 AU from the Sun and 36.0 AU from the Earth.
The TNO is moving 15.3 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 859 seconds.
The 1-sigma cross-track error in the shadow position is 5519 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=233.4 km assuming a 5% albedo -- 15.3 sec chord
Diameter=95.3 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 02GY32, (2019/04/08 23:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.5 -26:28:23  0.9  7.37 168
8Bet1Sco       16:06:33.6 -19:51:24  2.6  1.35 177
9Ome1Sco       16:07:56.3 -20:43:12  4.1  0.87 176
PPM 265197     16:10:42.8 -20:39:55  8.1  0.24 175
PPM 265225     16:12:05.3 -20:26:53  8.6  0.15 175
02GY32         16:11:32.9 -20:31:56 15.4       175
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 02GY32, (2019/04/08 23:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.37 168
8Bet1Sco       16:05:26.2 -19:48:20  2.6  1.35 177
9Ome1Sco       16:06:48.4 -20:40:10  4.1  0.87 176
PPM 265197     16:09:35.0 -20:36:57  8.1  0.24 175
PPM 265225     16:10:57.5 -20:23:56  8.6  0.15 175
02GY32         16:10:25.1 -20:28:59 15.4       175
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:37:24 UT

Marc W. Buie, Southwest Research Institute

RECON