RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-466-015820 with event index number of 141942

Geocentric closest approach at 2017/03/30 20:47:31 UTC

J2000 position of star is 06:14:56.4 +03:04:19
Equinox of date position of star is 06:15:49.6 +03:03:57
Stellar brightness R=15.9
Star is 47 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=22.7

TNO is 17.1 AU from the Sun and 17.2 AU from the Earth.
The TNO is moving 14.7 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 101 seconds.
The 1-sigma cross-track error in the shadow position is 1485 km.

The TNO has an absolute magnitude Hv=10.1
Diameter=58.3 km assuming a 5% albedo -- 4.0 sec chord
Diameter=23.8 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14YY49, (2017/03/30 20:48UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:06.4 +07:24:32  0.4  6.56  42
34Del Ori      05:32:53.3 -00:17:15  2.2 11.25  38
PPM 150016     06:11:17.9 +02:53:50  6.5  1.15  46
PPM 150194     06:16:59.4 +03:05:25  7.9  0.29  48
PPM 150148     06:15:36.9 +03:02:24  9.9  0.06  47
14YY49         06:15:50.7 +03:03:56 15.9        48
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 14YY49, (2017/03/30 20:48UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.56  42
34Del Ori      05:32:00.4 -00:17:57  2.2 11.25  38
PPM 150016     06:10:23.7 +02:54:07  6.5  1.15  46
PPM 150194     06:16:05.2 +03:05:50  7.9  0.29  48
PPM 150148     06:14:42.7 +03:02:47  9.9  0.06  47
14YY49         06:14:56.4 +03:04:19 15.9        47
Positions are for J2000

Event circumstances last updated at 2016/11/30 19:04:34 UT

Marc W. Buie, Southwest Research Institute

RECON