RECON: TNO occultation with 14YY49

Event between 14YY49 and star GA0920:02335478 with event index number of 161106

Geocentric closest approach at 2018/09/13 09:13:36 UTC

J2000 position of star is 07:09:05.0 +02:34:10
Equinox of date position of star is 07:10:02.7 +02:32:20
Stellar brightness G=13.1, use SENSEUP=32
Star is 111 degrees from the moon. Moon is 17% illuminated.
TNO apparent brightness V=23.1

TNO is 18.4 AU from the Sun and 18.8 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 5.9 arcsec/hr.
The 1-sigma error in the time of the event is 97 seconds.
The 1-sigma cross-track error in the shadow position is 1507 km.

The TNO has an absolute magnitude Hv=10.1
Diameter=58.3 km assuming a 5% albedo -- 2.6 sec chord
Diameter=23.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14YY49, (2018/09/13 09:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.1 +07:24:33  0.4 19.03 130
Alhena         06:38:47.5 +16:22:54  1.9 15.84 120
PPM 151953     07:08:06.0 +04:52:48  5.9  2.39 111
PPM 152038     07:10:06.2 +02:13:18  8.3  0.32 111
PPM 152048     07:10:23.8 +02:42:42  9.4  0.19 111
14YY49         07:10:03.6 +02:32:18 13.1       110
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, (2018/09/13 09:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 19.03 130
Alhena         06:37:42.8 +16:23:57  1.9 15.84 120
PPM 151953     07:07:06.4 +04:54:37  5.9  2.39 111
PPM 152038     07:09:07.8 +02:15:10  8.3  0.32 111
PPM 152048     07:09:25.2 +02:44:34  9.4  0.19 111
14YY49         07:09:05.0 +02:34:10 13.1       111
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:25:34 UT

Marc W. Buie, Southwest Research Institute

RECON