RECON: TNO occultation with 02CE251

Event between 02CE251 and star UC4-383-063923 with event index number of 54679

Geocentric closest approach at 2017/05/02 02:13:45 UTC

J2000 position of star is 13:05:57.4 -13:31:40
Equinox of date position of star is 13:06:52.3 -13:37:13
Stellar brightness R=16.5, use SENSEUP=128
Star is 81 degrees from the moon. Moon is 39% illuminated.
TNO apparent brightness V=22.9

TNO is 28.8 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 282 seconds.
The 1-sigma cross-track error in the shadow position is 5888 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=130.0 km assuming a 5% albedo -- 6.1 sec chord
Diameter=53.1 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 02CE251, (2017/05/02 02:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:06.5 -11:15:05  1.0  5.26  85
49 Vir         13:08:48.4 -10:49:58  4.9  2.83  81
PPM 226795     13:06:46.6 -14:12:16  7.2  0.58  81
PPM 226801     13:07:07.0 -13:50:30  9.2  0.23  81
02CE251        13:06:52.3 -13:37:13 16.5        82
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 02CE251, (2017/05/02 02:14UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  5.26  85
49 Vir         13:07:53.8 -10:44:26  4.9  2.83  81
PPM 226795     13:05:51.6 -14:06:43  7.2  0.58  81
PPM 226801     13:06:12.1 -13:44:57  9.2  0.23  81
02CE251        13:05:57.4 -13:31:40 16.5        81
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:04:43 UT

Marc W. Buie, Southwest Research Institute

RECON