Event between (535991) 15BD519 and star GA1060:03291417 with event index number of 1680724
Geocentric closest approach at 2027/04/17 23:39:59 UTC
J2000 position of star is 09:57:11.7 +17:25:14
Equinox of date position of star is 09:58:19.3 +17:19:18
Stellar brightness G=12.6,
use SENSEUP=16
Star is 26 degrees from the moon.
Moon is 90% illuminated.
TNO apparent brightness V=26.5
TNO is 43.1 AU from the Sun
and 42.7 AU from the Earth.
The TNO is moving 9.7
km/sec on the sky relative to the star, or,
1.1 arcsec/hr.
The 1-sigma error in the time of the event is 1618 seconds.
The 1-sigma cross-track error in the shadow position is
4278 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=398.1 km assuming a 5% albedo -- 6.2 sec chord
Diameter=162.5 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 5:2EEE
Star training set for 535991, (2027/04/17 23:40UT) Object RA Dec mag sep mel Regulus 10:09:49.5 +11:49:58 1.3 6.09 21 30Eta Leo 10:08:49.0 +16:37:42 3.5 2.51 24 PPM 126938 09:57:25.8 +17:24:39 8.3 0.32 26 535991 09:58:41.4 +17:17:22 12.6 26 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 535991, (2027/04/17 23:40UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 6.09 21 30Eta Leo 10:07:19.9 +16:45:46 3.5 2.51 24 PPM 126938 09:55:55.9 +17:32:29 8.3 0.32 26 535991 09:57:11.7 +17:25:14 12.6 26 Positions are for J2000
Event circumstances last updated at 2020/07/28 00:23:26 UT
Marc W. Buie, Southwest Research Institute