Event between (523983) 99RY214 and star GA1180:00367912 with event index number of 1591356
Geocentric closest approach at 2020/10/25 15:22:33 UTC
J2000 position of star is 02:35:01.0 +29:40:28
Equinox of date position of star is 02:36:13.8 +29:45:47
Stellar brightness G=16.8,
use SENSEUP=128
Star is 80 degrees from the moon.
Moon is 71% illuminated.
TNO apparent brightness V=25.7
TNO is 37.1 AU from the Sun
and 36.2 AU from the Earth.
The TNO is moving 24.0
km/sec on the sky relative to the star, or,
3.3 arcsec/hr.
The 1-sigma error in the time of the event is 224 seconds.
The 1-sigma cross-track error in the shadow position is
2695 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=199.5 km assuming a 5% albedo -- 2.5 sec chord
Diameter=81.5 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATEXTD
Star training set for 523983, (2020/10/25 15:23UT) Object RA Dec mag sep mel Aldebaran 04:37:07.1 +16:32:58 0.8 30.63 102 Hamal 02:08:21.1 +23:33:36 2.0 8.79 72 13 Tri 02:30:02.1 +30:01:27 6.5 1.37 79 PPM 091816 02:37:18.2 +29:29:37 7.4 0.35 80 PPM 091814 02:37:16.6 +29:57:51 9.2 0.30 81 PPM 091789 02:35:10.5 +29:40:49 11.0 0.25 80 523983 02:36:15.0 +29:45:52 16.8 81 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 523983, (2020/10/25 15:23UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 30.63 102 Hamal 02:07:10.7 +23:27:42 2.0 8.79 72 13 Tri 02:28:48.4 +29:55:56 6.5 1.37 79 PPM 091816 02:36:04.3 +29:24:14 7.4 0.35 80 PPM 091814 02:36:02.4 +29:52:28 9.2 0.30 81 PPM 091789 02:33:56.6 +29:35:24 11.0 0.25 80 523983 02:35:01.0 +29:40:28 16.8 80 Positions are for J2000
Event circumstances last updated at 2020/06/21 22:20:57 UT
Marc W. Buie, Southwest Research Institute