RECON: TNO occultation with 14HX199

Event between 14HX199 and star UC4-415-063085 with event index number of 135974

Geocentric closest approach at 2018/06/04 02:11:03 UTC

J2000 position of star is 15:43:47.5 -07:02:19
Equinox of date position of star is 15:44:43.1 -07:05:32
Stellar brightness R=16.3, use SENSEUP=128
Star is 79 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=21.9

TNO is 30.7 AU from the Sun and 29.7 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 531 seconds.
The 1-sigma cross-track error in the shadow position is 5776 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=241.0 km assuming a 5% albedo -- 10.8 sec chord
Diameter=98.4 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14HX199, (2018/06/04 02:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.4 -26:28:17  0.9 22.22  64
27Bet Lib      15:18:00.1 -09:26:59  2.6  7.03  85
PPM 198946     15:47:44.3 -06:10:36  6.5  1.18  78
PPM 198877     15:43:18.3 -07:43:08  8.4  0.72  79
PPM 198882     15:43:33.7 -07:04:21  9.5  0.30  79
14HX199        15:44:46.7 -07:05:45 16.3        79
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 14HX199, (2018/06/04 02:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 22.22  64
27Bet Lib      15:17:00.3 -09:22:59  2.6  7.03  85
PPM 198946     15:46:45.4 -06:07:13  6.5  1.18  78
PPM 198877     15:42:18.9 -07:39:40  8.4  0.72  79
PPM 198882     15:42:34.5 -07:00:54  9.5  0.30  79
14HX199        15:43:47.5 -07:02:19 16.3        79
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:26:34 UT

Marc W. Buie, Southwest Research Institute

RECON