RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star GA0980:02598860 with event index number of 356221

Geocentric closest approach at 2019/11/30 21:17:06 UTC

J2000 position of star is 07:02:45.6 +09:33:30
Equinox of date position of star is 07:03:49.5 +09:31:43
Stellar brightness G=15.4, use SENSEUP=128
Star is 159 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=21.1

TNO is 13.4 AU from the Sun and 12.7 AU from the Earth.
The TNO is moving 18.0 km/sec on the sky relative to the star, or, 7.1 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 898 km.

The TNO has an absolute magnitude Hv=9.7
Diameter=69.2 km assuming a 5% albedo -- 3.8 sec chord
Diameter=28.2 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 250112, (2019/11/30 21:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.0 +07:24:33  0.4 16.85 144
Alhena         06:38:51.7 +16:22:50  1.9  9.16 157
PPM 151820     07:04:23.2 +09:06:28  6.0  0.44 159
PPM 151816     07:04:17.3 +09:33:05  9.4  0.11 159
250112         07:03:51.1 +09:31:41 15.4       159
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 250112, (2019/11/30 21:17UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.85 144
Alhena         06:37:42.8 +16:23:57  1.9  9.16 157
PPM 151820     07:03:17.9 +09:08:18  6.0  0.44 159
PPM 151816     07:03:11.8 +09:34:54  9.4  0.11 159
250112         07:02:45.6 +09:33:30 15.4       159
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:56:17 UT

Marc W. Buie, Southwest Research Institute

RECON