RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA1300:04319485 with event index number of 350020

Geocentric closest approach at 2019/08/29 13:32:21 UTC

J2000 position of star is 14:26:33.0 +40:56:47
Equinox of date position of star is 14:27:19.6 +40:51:33
Stellar brightness G=15.1, use SENSEUP=128
Star is 64 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=19.6

TNO is 13.0 AU from the Sun and 13.4 AU from the Earth.
The TNO is moving 19.0 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
The 1-sigma error in the time of the event is 49 seconds.
The 1-sigma cross-track error in the shadow position is 582 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 7.6 sec chord
Diameter=59.0 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 468861, (2019/08/29 13:32UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:33.5 +19:04:51  0.0 21.90  64
Alkaid         13:48:18.8 +49:12:57  1.9 10.81  58
PPM 054166     14:30:23.3 +41:42:29  6.3  1.03  65
PPM 054110     14:24:53.9 +40:57:03  8.1  0.47  64
PPM 054126     14:25:35.5 +41:11:09  9.0  0.46  64
PPM 054135     14:27:03.7 +40:36:43 11.4  0.25  64
468861         14:27:19.8 +40:51:32 15.1        64
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 468861, (2019/08/29 13:32UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.2 +19:10:18  0.0 21.90  64
Alkaid         13:47:32.2 +49:18:48  1.9 10.81  58
PPM 054166     14:29:37.1 +41:47:41  6.3  1.03  65
PPM 054110     14:24:06.9 +41:02:21  8.1  0.47  64
PPM 054126     14:24:48.7 +41:16:26  9.0  0.46  64
PPM 054135     14:26:16.7 +40:41:59 11.4  0.25  64
468861         14:26:33.0 +40:56:47 15.1        64
Positions are for J2000

Event circumstances last updated at 2019/08/01 22:39:40 UT

Marc W. Buie, Southwest Research Institute

RECON