RECON: TNO occultation with 02VD130

Event between 02VD130 and star UC4-583-031510 with event index number of 144764

Geocentric closest approach at 2018/09/03 15:41:10 UTC

J2000 position of star is 06:36:35.0 +26:28:38
Equinox of date position of star is 06:37:41.9 +26:27:40
Stellar brightness R=16.4, use SENSEUP=128
Star is 21 degrees from the moon. Moon is 44% illuminated.
TNO apparent brightness V=22.4

TNO is 32.4 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 19.3 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 526 seconds.
The 1-sigma cross-track error in the shadow position is 2814 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 12.2 sec chord
Diameter=95.7 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 02VD130, (2018/09/03 15:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:27.4 +27:58:47  1.1 15.34  37
Alhena         06:38:47.4 +16:22:54  1.9 10.08  21
49 Aur         06:36:22.6 +28:00:22  5.0  1.58  22
PPM 096294     06:39:45.4 +26:53:16  8.3  0.62  22
PPM 096233     06:37:16.0 +26:41:51  9.4  0.26  21
PPM 096236     06:37:21.9 +26:36:10 10.8  0.17  21
02VD130        06:37:44.7 +26:27:37 16.4        22
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, (2018/09/03 15:41UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.34  37
Alhena         06:37:42.8 +16:23:57  1.9 10.08  21
49 Aur         06:35:12.1 +28:01:20  5.0  1.58  22
PPM 096294     06:38:35.5 +26:54:19  8.3  0.62  22
PPM 096233     06:36:06.2 +26:42:50  9.4  0.26  21
PPM 096236     06:36:12.1 +26:37:10 10.8  0.17  21
02VD130        06:36:35.0 +26:28:38 16.4        21
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:54:58 UT

Marc W. Buie, Southwest Research Institute

RECON