RECON: TNO occultation with 14DB143

Event between 14DB143 and star UC4-411-067044 with event index number of 206998

Geocentric closest approach at 2018/02/04 23:58:32 UTC

J2000 position of star is 16:58:40.2 -07:49:30
Equinox of date position of star is 16:59:37.4 -07:51:03
Stellar brightness R=16.1, use SENSEUP=128
Star is 59 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=22.2

TNO is 19.4 AU from the Sun and 19.8 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 5.7 arcsec/hr.
The 1-sigma error in the time of the event is 240 seconds.
The 1-sigma cross-track error in the shadow position is 1828 km.

The TNO has an absolute magnitude Hv=9.0
Diameter=96.8 km assuming a 5% albedo -- 4.2 sec chord
Diameter=39.5 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14DB143, (2018/02/04 23:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.2 -26:28:14  0.9 19.86  56
13Zet Oph      16:38:09.4 -10:36:09  2.6  5.97  54
23 Oph         16:55:33.8 -06:10:56  5.3  1.95  58
PPM 200239     17:00:30.4 -07:58:53  8.4  0.25  60
PPM 200227     16:59:58.5 -07:48:25  9.3  0.09  59
14DB143        16:59:39.1 -07:51:05 16.1        60
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 14DB143, (2018/02/04 23:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.86  56
13Zet Oph      16:37:09.6 -10:34:01  2.6  5.97  54
23 Oph         16:54:35.7 -06:09:15  5.3  1.95  58
PPM 200239     16:59:31.4 -07:57:19  8.4  0.25  60
PPM 200227     16:58:59.7 -07:46:50  9.3  0.09  59
14DB143        16:58:40.2 -07:49:30 16.1        59
Positions are for J2000

Event circumstances last updated at 2017/08/01 16:34:26 UT

Marc W. Buie, Southwest Research Institute

RECON