Event between (15810) Arawn and star GA0720:32999439 with event index number of 1703814
Geocentric closest approach at 2027/06/12 12:32:53 UTC
J2000 position of star is 20:25:10.2 -17:47:37
Equinox of date position of star is 20:26:31.2 -17:42:55
Stellar brightness G=16.1,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 120 degrees from the moon.
Moon is 62% illuminated.
Apparent brightness V=23.4
Object is 36.4 AU from the Sun
and 35.7 AU from the Earth.
Apparent velocity is 16.1
km/sec on the sky relative to the star, or,
2.2 arcsec/hr.
The 1-sigma error in the time of the event is 795 seconds.
The 1-sigma cross-track error in the shadow position is
3745 km.
The object has an absolute magnitude Hv=7.7
Diameter=173.8 km assuming a 5% albedo -- 10.9 sec chord
Diameter=70.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
Star training set for 15810, (2027/06/12 12:43UT) Object RA Dec mag sep mel Fomalhaut 22:59:09.5 -29:28:33 1.2 36.66 140 38Zet Sgr 19:04:21.3 -29:50:18 2.7 22.36 98 10Pi Cap 20:28:53.3 -18:07:12 5.2 0.66 120 PPM 237438 20:28:05.2 -17:17:10 7.5 0.53 120 PPM 237394 20:26:32.7 -17:45:24 8.8 0.07 119 15810 20:26:44.0 -17:42:10 16.1 120 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 15810, (2027/06/12 12:43UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 36.66 140 38Zet Sgr 19:02:36.7 -29:52:49 2.7 22.36 98 10Pi Cap 20:27:19.2 -18:12:43 5.2 0.66 120 PPM 237438 20:26:31.7 -17:22:40 7.5 0.53 120 PPM 237394 20:24:58.8 -17:50:50 8.8 0.07 119 15810 20:25:10.2 -17:47:37 16.1 119 Positions are for J2000
Event circumstances last updated at 2023/09/03 04:23:51 UT
Marc W. Buie, Southwest Research Institute