RECON: TNO occultation with 04KH19

Event between 04KH19 and star UC4-382-071929 with event index number of 126471

Geocentric closest approach at 2017/05/29 21:46:51 UTC

J2000 position of star is 16:08:22.1 -13:44:59
Equinox of date position of star is 16:09:17.6 -13:47:33
Stellar brightness R=16.2
Star is 117 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=23.0

TNO is 44.6 AU from the Sun and 43.6 AU from the Earth.
The TNO is moving 25.8 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 224 seconds.
The 1-sigma cross-track error in the shadow position is 2837 km.

The TNO has an absolute magnitude Hv=6.5
Diameter=303.4 km assuming a 5% albedo -- 11.7 sec chord
Diameter=123.9 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 04KH19, (2017/05/29 21:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.7 -26:28:09  0.9 13.61 124
8Bet1Sco       16:06:27.1 -19:51:06  2.6  6.10 118
11 Sco         16:08:34.5 -12:47:27  6.1  1.02 117
PPM 231257     16:09:15.0 -13:48:53  7.8  0.03 117
04KH19         16:09:20.7 -13:47:42 16.2       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 04KH19, (2017/05/29 21:47UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 13.61 124
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.10 118
11 Sco         16:07:36.3 -12:44:44  6.1  1.02 117
PPM 231257     16:08:16.4 -13:46:10  7.8  0.03 117
04KH19         16:08:22.1 -13:44:59 16.2       117
Positions are for J2000

Event circumstances last updated at 2016/07/01 17:33:35 UT

Marc W. Buie, Southwest Research Institute

RECON