Event between (517717) 15KZ120 and star GA1220:04075395 with event index number of 267223
Geocentric closest approach at 2018/10/20 08:59:58 UTC
J2000 position of star is 17:02:09.2 +32:21:38
Equinox of date position of star is 17:02:51.5 +32:20:05
Stellar brightness G=15.1,
use SENSEUP=128
Star is 91 degrees from the moon.
Moon is 82% illuminated.
TNO apparent brightness V=19.8
TNO is 8.4 AU from the Sun
and 8.8 AU from the Earth.
The TNO is moving 22.9
km/sec on the sky relative to the star, or,
12.9 arcsec/hr.
The 1-sigma error in the time of the event is 16 seconds.
The 1-sigma cross-track error in the shadow position is
636 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=60.3 km assuming a 5% albedo -- 2.6 sec chord
Diameter=24.6 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 517717, (2018/10/20 09:00UT) Object RA Dec mag sep mel Vega 18:37:34.5 +38:48:08 0.0 20.25 75 27Bet Her 16:31:01.7 +21:26:59 2.8 12.98 96 59 Her 17:02:18.0 +33:32:31 5.3 1.21 91 PPM 079879 17:02:59.9 +31:51:30 7.4 0.48 91 PPM 079872 17:02:32.1 +32:16:13 9.3 0.09 91 517717 17:02:51.6 +32:20:04 15.1 91 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 517717, (2018/10/20 09:00UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 20.25 75 27Bet Her 16:30:13.1 +21:29:22 2.8 12.98 96 59 Her 17:01:36.4 +33:34:06 5.3 1.21 91 PPM 079879 17:02:17.2 +31:53:04 7.4 0.48 91 PPM 079872 17:01:49.7 +32:17:47 9.3 0.09 91 517717 17:02:09.2 +32:21:38 15.1 91 Positions are for J2000
Event circumstances last updated at 2018/10/11 06:04:42 UT
Marc W. Buie, Southwest Research Institute