RECON: TNO occultation with 08JO41

Event between 08JO41 and star UC4-549-072461 with event index number of 132636

Geocentric closest approach at 2018/07/16 13:58:38 UTC

J2000 position of star is 18:33:20.5 +19:45:31
Equinox of date position of star is 18:34:03.6 +19:46:19
Stellar brightness R=16.2
Star is 108 degrees from the moon. Moon is 17% illuminated.
TNO apparent brightness V=24.7

TNO is 41.8 AU from the Sun and 41.1 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 349 seconds.
The 1-sigma cross-track error in the shadow position is 2222 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=123.6 km assuming a 5% albedo -- 5.0 sec chord
Diameter=50.5 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 08JO41, (2018/07/16 13:59UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:34.0 +38:48:06  0.0 19.04 102
Rasalhague     17:35:47.7 +12:32:53  2.1 15.75  96
PPM 134827     18:31:54.0 +16:56:33  5.8  2.88 108
PPM 107436     18:33:38.5 +20:25:12  8.2  0.66 108
PPM 134850     18:32:44.2 +19:54:01  9.1  0.35 108
PPM 134864     18:33:11.3 +19:50:12 10.2  0.23 108
08JO41         18:34:08.7 +19:46:25 16.2       108
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 08JO41, (2018/07/16 13:59UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.6 +38:47:06  0.0 19.04 102
Rasalhague     17:34:56.2 +12:33:32  2.1 15.75  96
PPM 134827     18:31:04.4 +16:55:42  5.8  2.88 108
PPM 107436     18:32:50.6 +20:24:19  8.2  0.66 108
PPM 134850     18:31:56.0 +19:53:09  9.1  0.35 108
PPM 134864     18:32:23.1 +19:49:19 10.2  0.23 108
08JO41         18:33:20.5 +19:45:31 16.2       108
Positions are for J2000

Event circumstances last updated at 2016/08/02 17:41:06 UT

Marc W. Buie, Southwest Research Institute

RECON