Event between 15AN281 and star UC4-549-050096 with event index number of 142224
Geocentric closest approach at 2017/04/13 20:53:06 UTC
J2000 position of star is 11:40:41.4 +19:47:18
Equinox of date position of star is 11:41:34.1 +19:41:40
Stellar brightness R=13.2
Star is 65 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=21.8
TNO is 43.5 AU from the Sun
and 42.7 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 223 seconds.
The 1-sigma cross-track error in the shadow position is
2919 km.
The TNO has an absolute magnitude Hv=5.3
Diameter=512.9 km assuming a 5% albedo -- 25.0 sec chord
Diameter=209.4 km assuming a 30% albedo -- 10.2 sec chord
Dynamical classification is SCATEXTD
Star training set for 15AN281, (2017/04/13 20:53UT) Object RA Dec mag sep mel Regulus 10:09:17.4 +11:52:56 1.3 23.51 83 Denebola 11:49:56.4 +14:28:31 2.1 5.59 61 92 Leo 11:41:40.9 +21:15:24 5.3 1.56 66 PPM 128521 11:45:55.1 +19:24:15 8.4 1.06 64 PPM 128452 11:41:10.8 +19:26:15 9.8 0.27 65 PPM 128448 11:41:01.3 +19:44:44 10.9 0.14 65 15AN281 11:41:35.2 +19:41:32 13.2 65 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 15AN281, (2017/04/13 20:53UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 23.51 83 Denebola 11:49:03.0 +14:34:17 2.1 5.59 61 92 Leo 11:40:47.0 +21:21:09 5.3 1.56 66 PPM 128521 11:45:01.4 +19:30:00 8.4 1.06 64 PPM 128452 11:40:16.9 +19:32:00 9.8 0.27 65 PPM 128448 11:40:07.4 +19:50:29 10.9 0.14 65 15AN281 11:40:41.4 +19:47:18 13.2 65 Positions are for J2000
Event circumstances last updated at 2016/11/30 19:04:47 UT
Marc W. Buie, Southwest Research Institute