RECON: TNO occultation with 03HM57

Event between 03HM57 and star UC4-308-084514 with event index number of 161652

Geocentric closest approach at 2017/07/14 22:34:51 UTC

J2000 position of star is 15:46:11.0 -28:35:12
Equinox of date position of star is 15:47:13.0 -28:38:17
Stellar brightness R=14.2
Star is 118 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=21.1

TNO is 17.6 AU from the Sun and 16.9 AU from the Earth.
The TNO is moving 10.5 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 234 seconds.
The 1-sigma cross-track error in the shadow position is 2517 km.

The TNO has an absolute magnitude Hv=8.5
Diameter=119.7 km assuming a 5% albedo -- 11.4 sec chord
Diameter=48.9 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 03HM57, (2017/07/14 22:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:29.1 -26:28:10  0.9  9.82 109
7Del Sco       16:01:22.4 -22:40:13  2.3  6.76 117
40Tau Lib      15:39:44.2 -29:50:03  3.8  2.03 119
PPM 264646     15:46:16.8 -28:35:12  8.4  0.22 118
PPM 264676     15:48:03.2 -28:37:31  9.7  0.17 118
03HM57         15:47:15.6 -28:38:25 14.2       117
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 03HM57, (2017/07/14 22:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  9.82 109
7Del Sco       16:00:20.0 -22:37:18  2.3  6.76 117
40Tau Lib      15:38:39.4 -29:46:40  3.8  2.03 119
PPM 264646     15:45:12.3 -28:31:58  8.4  0.22 118
PPM 264676     15:46:58.6 -28:34:19  9.7  0.17 118
03HM57         15:46:11.0 -28:35:12 14.2       118
Positions are for J2000

Event circumstances last updated at 2016/11/01 18:05:43 UT

Marc W. Buie, Southwest Research Institute

RECON