RECON: TNO occultation with 02VD130

Event between 02VD130 and star GA1160:02519524 with event index number of 229237

Geocentric closest approach at 2019/12/06 16:47:47 UTC

J2000 position of star is 06:45:33.6 +26:34:23
Equinox of date position of star is 06:46:46.1 +26:33:05
Stellar brightness G=12.2, use SENSEUP=16
Star is 90 degrees from the moon. Moon is 72% illuminated.
TNO apparent brightness V=22.4

TNO is 32.4 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 21.3 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 246 seconds.
The 1-sigma cross-track error in the shadow position is 1194 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=207.0 km assuming a 5% albedo -- 9.7 sec chord
Diameter=84.5 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 2:1E+4:2II
 
 
 
 
 
 
 
 

Star training set for 02VD130, (2019/12/06 16:48UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.0 +27:58:35  1.1 13.34 103
Alhena         06:38:51.8 +16:22:50  1.9 10.34  88
54 Aur         06:40:48.5 +28:14:37  5.8  2.15  89
PPM 096583     06:50:24.9 +27:09:58  6.6  1.01  91
PPM 096497     06:46:47.0 +26:14:01  9.0  0.32  90
PPM 096507     06:47:01.1 +26:46:01 10.6  0.22  90
02VD130        06:46:47.9 +26:33:03 12.2        90
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 02VD130, (2019/12/06 16:48UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 13.34 103
Alhena         06:37:42.8 +16:23:57  1.9 10.34  88
54 Aur         06:39:33.1 +28:15:47  5.8  2.15  89
PPM 096583     06:49:10.3 +27:11:25  6.6  1.01  91
PPM 096497     06:45:32.9 +26:15:21  9.0  0.32  90
PPM 096507     06:45:46.7 +26:47:21 10.6  0.22  90
02VD130        06:45:33.6 +26:34:23 12.2        90
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:57:37 UT

Marc W. Buie, Southwest Research Institute

RECON