RECON: TNO occultation with 02VD130

Event between 02VD130 and star UC4-584-027285 with event index number of 104013

Geocentric closest approach at 2018/02/14 22:14:50 UTC

J2000 position of star is 06:17:51.1 +26:44:27
Equinox of date position of star is 06:18:58.2 +26:43:58
Stellar brightness R=16.3, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.3

TNO is 32.4 AU from the Sun and 31.7 AU from the Earth.
The TNO is moving 12.9 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 817 seconds.
The 1-sigma cross-track error in the shadow position is 2959 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 18.2 sec chord
Diameter=95.7 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 02VD130, (2018/02/14 22:15UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:25.4 +27:58:52  1.1 19.43 157
Alhena         06:38:45.5 +16:22:56  1.9 11.32 143
PPM 095919     06:25:50.7 +25:02:15  6.3  2.29 140
PPM 095766     06:20:25.0 +26:58:38  8.5  0.40 139
PPM 095749     06:19:50.2 +26:46:58 10.0  0.20 139
02VD130        06:18:59.0 +26:43:58 16.3       139
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, (2018/02/14 22:15UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 19.43 157
Alhena         06:37:42.8 +16:23:57  1.9 11.32 143
PPM 095919     06:24:43.7 +25:02:55  6.3  2.29 140
PPM 095766     06:19:17.0 +26:59:09  8.5  0.40 139
PPM 095749     06:18:42.3 +26:47:29 10.0  0.20 139
02VD130        06:17:51.1 +26:44:27 16.3       138
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:16:31 UT

Marc W. Buie, Southwest Research Institute

RECON