RECON: TNO occultation with 14FB72

Event between 14FB72 and star UC4-339-074977 with event index number of 318233

Geocentric closest approach at 2020/02/08 14:33:23 UTC

J2000 position of star is 15:57:44.9 -22:23:51
Equinox of date position of star is 15:58:54.4 -22:27:10
Stellar brightness R=14.7, use SENSEUP=128
Star is 112 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.8

TNO is 18.7 AU from the Sun and 18.9 AU from the Earth.
The TNO is moving 14.0 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 154 seconds.
The 1-sigma cross-track error in the shadow position is 711 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=105.7 km assuming a 5% albedo -- 7.4 sec chord
Diameter=43.1 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14FB72, (2020/02/08 14:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:38.6 -26:28:30  0.9  8.26 120
7Del Sco       16:01:31.5 -22:40:39  2.3  0.64 113
PPM 264922     15:58:51.2 -21:02:24  6.1  1.41 112
PPM 264845     15:55:53.1 -22:49:28  7.2  0.80 112
PPM 264927     15:59:11.6 -22:36:10  9.3  0.16 113
14FB72         15:58:56.3 -22:27:15 14.7       113
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 14FB72, (2020/02/08 14:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.26 120
7Del Sco       16:00:20.0 -22:37:18  2.3  0.64 113
PPM 264922     15:57:40.5 -20:58:59  6.1  1.41 112
PPM 264845     15:54:41.6 -22:45:59  7.2  0.80 112
PPM 264927     15:58:00.1 -22:32:47  9.3  0.16 113
14FB72         15:57:44.9 -22:23:51 14.7       112
Positions are for J2000

Event circumstances last updated at 2019/07/30 22:32:09 UT

Marc W. Buie, Southwest Research Institute

RECON