RECON: TNO occultation with 00SR331

Event between 00SR331 and star UC4-543-035394 with event index number of 92830

Geocentric closest approach at 2017/12/15 02:00:33 UTC

J2000 position of star is 06:51:02.6 +18:31:35
Equinox of date position of star is 06:52:03.6 +18:30:18
Stellar brightness R=15.7, use SENSEUP=128
Star is 126 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=23.9

TNO is 32.3 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 683 seconds.
The 1-sigma cross-track error in the shadow position is 2940 km.

The TNO has an absolute magnitude Hv=8.8
Diameter=106.2 km assuming a 5% albedo -- 4.7 sec chord
Diameter=43.3 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 00SR331, (2017/12/15 02:01UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:24.7 +27:58:53  1.1 15.65 114
Alhena         06:38:44.9 +16:22:57  1.9  3.82 130
PPM 123009     06:47:24.3 +18:49:03  6.5  1.15 128
PPM 123122     06:51:17.2 +18:46:34  8.2  0.33 127
PPM 123150     06:52:27.2 +18:38:23 10.0  0.16 126
00SR331        06:52:05.6 +18:30:15 15.7       126
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 00SR331, (2017/12/15 02:01UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 15.65 114
Alhena         06:37:42.8 +16:23:57  1.9  3.82 130
PPM 123009     06:46:21.1 +18:50:16  6.5  1.15 128
PPM 123122     06:50:14.0 +18:47:53  8.2  0.33 127
PPM 123150     06:51:24.1 +18:39:44 10.0  0.16 126
00SR331        06:51:02.6 +18:31:35 15.7       126
Positions are for J2000

Event circumstances last updated at 2017/05/13 17:33:22 UT

Marc W. Buie, Southwest Research Institute

RECON