Event between 99GS46 and star GA0680:06133005 with event index number of 263585
Geocentric closest approach at 2020/05/15 14:57:50 UTC
J2000 position of star is 15:09:41.5 -20:08:43
Equinox of date position of star is 15:10:44.8 -20:12:52
Stellar brightness G=16.5,
use SENSEUP=128
Star is 106 degrees from the moon.
Moon is 40% illuminated.
TNO apparent brightness V=23.3
TNO is 45.6 AU from the Sun
and 44.6 AU from the Earth.
The TNO is moving 25.1
km/sec on the sky relative to the star, or,
2.8 arcsec/hr.
The 1-sigma error in the time of the event is 295 seconds.
The 1-sigma cross-track error in the shadow position is
5617 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=276.7 km assuming a 5% albedo -- 11.0 sec chord
Diameter=113.0 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is CLASSICAL
Star training set for 99GS46, (2020/05/15 14:58UT) Object RA Dec mag sep mel Antares 16:30:39.6 -26:28:32 0.9 19.33 87 27Bet Lib 15:18:06.4 -09:27:25 2.6 10.91 108 PPM 264038 15:17:34.1 -22:28:25 5.5 2.74 104 PPM 263888 15:10:58.9 -20:35:50 7.7 0.38 106 PPM 263901 15:11:32.1 -20:15:42 9.7 0.16 106 99GS46 15:10:51.5 -20:13:18 16.5 106 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 99GS46, (2020/05/15 14:58UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 19.33 87 27Bet Lib 15:17:00.3 -09:22:59 2.6 10.91 108 PPM 264038 15:16:23.0 -22:23:58 5.5 2.74 104 PPM 263888 15:09:48.7 -20:31:14 7.7 0.38 106 PPM 263901 15:10:22.0 -20:11:08 9.7 0.16 106 99GS46 15:09:41.5 -20:08:43 16.5 106 Positions are for J2000
Event circumstances last updated at 2018/05/31 17:29:14 UT
Marc W. Buie, Southwest Research Institute