RECON: TNO occultation with 10VQ11

Event between 10VQ11 and star UC4-498-011752 with event index number of 164872

Geocentric closest approach at 2018/11/17 21:55:39 UTC

J2000 position of star is 05:16:59.7 +09:30:12
Equinox of date position of star is 05:17:57.0 +09:31:16
Stellar brightness R=16.3, use SENSEUP=128
Star is 88 degrees from the moon. Moon is 71% illuminated.
TNO apparent brightness V=21.6

TNO is 40.6 AU from the Sun and 39.7 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 335 seconds.
The 1-sigma cross-track error in the shadow position is 3461 km.

The TNO has an absolute magnitude Hv=5.5
Diameter=476.4 km assuming a 5% albedo -- 20.7 sec chord
Diameter=194.5 km assuming a 30% albedo -- 8.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 10VQ11, (2018/11/17 21:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.7 +07:24:33  0.4  9.67  97
Bellatrix      05:26:08.7 +06:21:55  1.6  3.74  89
18 Ori         05:17:07.1 +11:21:40  5.6  1.85  88
PPM 148725     05:19:13.2 +09:14:07  7.7  0.41  88
PPM 148697     05:17:21.0 +09:20:59 10.9  0.24  87
10VQ11         05:18:02.0 +09:31:21 16.3        88
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 10VQ11, (2018/11/17 21:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.67  97
Bellatrix      05:25:07.8 +06:20:58  1.6  3.74  89
18 Ori         05:16:04.1 +11:20:29  5.6  1.85  88
PPM 148725     05:18:11.1 +09:12:59  7.7  0.41  88
PPM 148697     05:16:18.9 +09:19:48 10.9  0.24  87
10VQ11         05:16:59.7 +09:30:12 16.3        87
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:05:58 UT

Marc W. Buie, Southwest Research Institute

RECON