Event between (69986) 98WW24 and star GDR2_90.447_15.451 with event index number of 149146
Geocentric closest approach at 2018/08/25 19:11:06 UTC
J2000 position of star is 06:01:47.4 +15:27:03
Equinox of date position of star is 06:02:50.7 +15:26:59
Stellar brightness G=15.9,
use SENSEUP=128
Star is 125 degrees from the moon.
Moon is 100% illuminated.
TNO apparent brightness V=23.6
TNO is 34.7 AU from the Sun
and 35.2 AU from the Earth.
The TNO is moving 19.3
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 236 seconds.
The 1-sigma cross-track error in the shadow position is
1546 km.
The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 7.9 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
Star training set for 69986, (2018/08/25 19:11UT) Object RA Dec mag sep mel Betelgeuse 05:56:10.9 +07:24:33 0.4 8.21 122 Alhena 06:38:47.3 +16:22:55 1.9 8.69 134 69 Ori 06:13:07.8 +16:07:28 4.7 2.56 127 PPM 121788 06:03:07.0 +15:12:18 8.2 0.25 125 PPM 121785 06:02:58.5 +15:37:44 10.1 0.18 125 69986 06:02:51.6 +15:26:59 15.9 125 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 69986, (2018/08/25 19:11UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 8.21 122 Alhena 06:37:42.8 +16:23:57 1.9 8.69 134 69 Ori 06:12:03.2 +16:07:49 4.7 2.56 127 PPM 121788 06:02:02.8 +15:12:23 8.2 0.25 125 PPM 121785 06:01:54.2 +15:37:47 10.1 0.18 125 69986 06:01:47.4 +15:27:03 15.9 125 Positions are for J2000
Event circumstances last updated at 2018/05/24 17:58:10 UT
Marc W. Buie, Southwest Research Institute