Event between (35671) 98SN165 and star UC4-489-001861 with event index number of 85708
Geocentric closest approach at 2017/09/28 01:13:01 UTC
J2000 position of star is 01:21:51.3 +07:47:45
Equinox of date position of star is 01:22:45.8 +07:53:11
Stellar brightness R=15.9,
use SENSEUP=128
Star is 108 degrees from the moon.
Moon is 49% illuminated.
TNO apparent brightness V=21.3
TNO is 37.4 AU from the Sun
and 36.5 AU from the Earth.
The TNO is moving 23.7
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is
1592 km.
The TNO has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 19.3 sec chord
Diameter=186.6 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is CLASSICAL
Star training set for 35671, (2017/09/28 01:13UT) Object RA Dec mag sep mel 6Bet Ari 01:55:37.4 +20:53:39 2.6 15.23 119 PPM 144653 01:29:58.8 +07:23:07 6.4 1.85 109 PPM 144532 01:23:52.5 +07:30:46 8.0 0.46 108 PPM 144516 01:22:45.7 +08:08:28 10.0 0.25 108 PPM 144520 01:23:11.0 +07:58:28 10.5 0.13 108 35671 01:22:47.0 +07:53:18 15.9 108 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 35671, (2017/09/28 01:13UT) Object RA Dec mag sep mel 6Bet Ari 01:54:38.5 +20:48:27 2.6 15.23 119 PPM 144653 01:29:03.1 +07:17:38 6.4 1.85 109 PPM 144532 01:22:56.9 +07:25:13 8.0 0.46 108 PPM 144516 01:21:50.0 +08:02:55 10.0 0.25 108 PPM 144520 01:22:15.3 +07:52:55 10.5 0.13 108 35671 01:21:51.3 +07:47:45 15.9 107 Positions are for J2000
Event circumstances last updated at 2017/05/16 18:33:09 UT
Marc W. Buie, Southwest Research Institute