RECON: TNO occultation with 10VX11

Event between 10VX11 and star TYC24737-01146-1 with event index number of 162535

Geocentric closest approach at 2017/12/15 23:28:03 UTC

J2000 position of star is 04:59:10.1 -00:20:48
Equinox of date position of star is 05:00:02.1 -00:19:20
Stellar brightness V=10.7
Star is 157 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=21.1

TNO is 29.0 AU from the Sun and 28.1 AU from the Earth.
The TNO is moving 23.6 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 679 seconds.
The 1-sigma cross-track error in the shadow position is 2836 km.

The TNO has an absolute magnitude Hv=6.5
Diameter=304.8 km assuming a 5% albedo -- 12.9 sec chord
Diameter=124.4 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 
 
 

Star training set for 10VX11, (2017/12/15 23:28UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:24.1 -08:10:56  0.1  8.74 149
67Bet Eri      05:08:44.0 -05:03:52  2.8  5.21 152
PPM 175683     04:58:11.9 -01:02:26  6.2  0.86 157
PPM 175707     05:02:20.6 -00:40:19  6.6  0.66 157
PPM 175686     04:59:08.0 -00:17:20  9.6  0.24 158
PPM 175692     04:59:47.9 -00:11:43 10.4  0.14 158
10VX11         05:00:05.2 -00:19:15 10.7       157
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 10VX11, (2017/12/15 23:28UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  8.74 149
67Bet Eri      05:07:50.9 -05:05:13  2.8  5.21 152
PPM 175683     04:57:17.1 -01:04:03  6.2  0.86 157
PPM 175707     05:01:25.7 -00:41:49  6.6  0.66 157
PPM 175686     04:58:12.9 -00:18:56  9.6  0.24 158
PPM 175692     04:58:52.8 -00:13:17 10.4  0.14 158
10VX11         04:59:10.1 -00:20:48 10.7       157
Positions are for J2000

Event circumstances last updated at 2016/12/09 18:55:11 UT

Marc W. Buie, Southwest Research Institute

RECON