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 18:34:07.1 +19:46:23
Stellar brightness R=16.2,
use SENSEUP=128
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 17:35:47.8 +12:32:52 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 18:32:44.1 +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 2017/12/05 18:48:28 UT
Marc W. Buie, Southwest Research Institute