RECON: TNO occultation with 13FN28

Event between 13FN28 and star UC4-366-062131 with event index number of 359716

Geocentric closest approach at 2020/04/23 12:13:51 UTC

J2000 position of star is 13:07:49.6 -16:58:38
Equinox of date position of star is 13:08:51.7 -17:04:50
Stellar brightness R=16.6, use SENSEUP=128
Star is 159 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.4

TNO is 20.5 AU from the Sun and 19.5 AU from the Earth.
The TNO is moving 21.3 km/sec on the sky relative to the star, or, 5.4 arcsec/hr.
The 1-sigma error in the time of the event is 54 seconds.
The 1-sigma cross-track error in the shadow position is 921 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=129.4 km assuming a 5% albedo -- 6.1 sec chord
Diameter=52.8 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 13FN28, (2020/04/23 12:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:16.0 -11:16:00  1.0  7.18 164
53 Vir         13:13:08.6 -16:18:27  4.8  1.28 160
PPM 226874     13:10:32.1 -17:20:27  8.1  0.47 160
PPM 226823     13:08:28.1 -17:11:15  9.3  0.15 159
13FN28         13:08:54.5 -17:05:07 16.6       159
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 13FN28, (2020/04/23 12:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  7.18 164
53 Vir         13:12:03.7 -16:12:00  4.8  1.28 160
PPM 226874     13:09:27.1 -17:13:59  8.1  0.47 160
PPM 226823     13:07:23.2 -17:04:45  9.3  0.15 159
13FN28         13:07:49.6 -16:58:38 16.6       159
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:30:14 UT

Marc W. Buie, Southwest Research Institute

RECON