RECON: TNO occultation with 14NW65

Event between 14NW65 and star UC4-475-125772 with event index number of 139292

Geocentric closest approach at 2017/04/17 03:17:27 UTC

J2000 position of star is 21:22:59.1 +04:59:46
Equinox of date position of star is 21:23:51.0 +05:04:15
Stellar brightness R=15.9, use SENSEUP=128
Star is 54 degrees from the moon. Moon is 71% illuminated.
TNO apparent brightness V=21.0

TNO is 24.7 AU from the Sun and 25.2 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 195 seconds.
The 1-sigma cross-track error in the shadow position is 4282 km.

The TNO has an absolute magnitude Hv=6.8
Diameter=269.2 km assuming a 5% albedo -- 12.9 sec chord
Diameter=109.9 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14NW65, (2017/04/17 03:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:36.2 -29:31:49  1.2 41.40  66
Tarazed        19:47:04.9 +10:39:23  2.7 24.59  38
8Alp Equ       21:16:41.3 +05:19:13  3.9  1.80  52
PPM 171648     21:23:05.0 +04:33:47  8.1  0.54  53
PPM 171650     21:23:10.9 +05:05:53  8.8  0.17  53
14NW65         21:23:51.0 +05:04:15 15.9        54
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 14NW65, (2017/04/17 03:17UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 41.40  66
Tarazed        19:46:15.6 +10:36:48  2.7 24.59  38
8Alp Equ       21:15:49.5 +05:14:51  3.9  1.80  52
PPM 171648     21:22:13.0 +04:29:19  8.1  0.54  53
PPM 171650     21:22:19.1 +05:01:25  8.8  0.17  53
14NW65         21:22:59.1 +04:59:46 15.9        53
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:02:02 UT

Marc W. Buie, Southwest Research Institute

RECON