Event between (469987) 06HJ123 and star GA0740:08539688 with event index number of 2256755
Geocentric closest approach at 2027/05/18 04:58:38 UTC
J2000 position of star is 17:30:03.4 -15:02:52
Equinox of date position of star is 17:31:23.7 -15:03:52
Stellar brightness G=16.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 54 degrees from the moon.
Moon is 94% illuminated.
Apparent brightness V=21.1
Object is 31.4 AU from the Sun
and 30.5 AU from the Earth.
Apparent velocity is 20.9
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is
1165 km.
The object has an absolute magnitude Hv=6.1
Diameter=359.8 km assuming a 5% albedo -- 17.3 sec chord
Diameter=146.9 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 3:2E
Star training set for 469987, (2027/05/18 05:00UT) Object RA Dec mag sep mel Antares 16:31:05.4 -26:29:25 0.9 18.15 39 35Eta Oph 17:11:57.0 -15:45:25 2.6 4.79 49 55Xi Ser 17:39:09.4 -15:24:48 3.5 1.85 56 PPM 233161 17:32:02.7 -15:39:23 7.6 0.60 54 PPM 233142 17:31:10.1 -15:13:30 9.7 0.19 54 469987 17:31:37.3 -15:04:02 16.6 54 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 469987, (2027/05/18 05:00UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 18.15 39 35Eta Oph 17:10:22.7 -15:43:29 2.6 4.79 49 55Xi Ser 17:37:35.1 -15:23:56 3.5 1.85 56 PPM 233161 17:30:28.3 -15:38:14 7.6 0.60 54 PPM 233142 17:29:36.1 -15:12:20 9.7 0.19 54 469987 17:30:03.4 -15:02:52 16.6 54 Positions are for J2000
Event circumstances last updated at 2023/05/29 02:59:28 UT
Marc W. Buie, Southwest Research Institute