Event between (134340) Pluto and star GA0660:38569542 with event index number of 2038914
Geocentric closest approach at 2025/05/31 01:29:23 UTC
J2000 position of star is 20:26:03.8 -22:56:47
Equinox of date position of star is 20:27:30.1 -22:51:55
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 180 degrees from the moon.
Moon is 20% illuminated.
Apparent brightness V=15.1
Object is 35.3 AU from the Sun
and 34.7 AU from the Earth.
Apparent velocity is 12.6
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is
1271 km.
The object has an absolute magnitude Hv=-0.5
Diameter=7379.3 km assuming a 5% albedo -- 590.2 sec chord
Diameter=3012.6 km assuming a 30% albedo -- 240.9 sec chord
Dynamical classification is 3:2E
Star training set for 134340, (2025/05/31 01:29UT) Object RA Dec mag sep mel Fomalhaut 22:59:02.9 -29:29:13 1.2 34.47 145 38Zet Sgr 19:04:13.6 -29:50:29 2.7 19.89 161 4 Cap 20:19:30.7 -21:43:47 5.9 2.18 178 PPM 271170 20:29:38.5 -22:55:44 7.9 0.48 179 PPM 271111 20:26:39.3 -23:05:56 8.6 0.32 180 134340 20:27:33.5 -22:51:43 16.3 179 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 134340, (2025/05/31 01:29UT) Object RA Dec mag sep mel Fomalhaut 22:57:39.6 -29:37:24 1.2 34.47 145 38Zet Sgr 19:02:36.7 -29:52:49 2.7 19.89 161 4 Cap 20:18:01.4 -21:48:36 5.9 2.18 178 PPM 271170 20:28:08.8 -23:00:52 7.9 0.48 179 PPM 271111 20:25:09.5 -23:10:59 8.6 0.32 180 134340 20:26:03.8 -22:56:47 16.3 180 Positions are for J2000
Event circumstances last updated at 2024/06/10 01:52:20 UT
Marc W. Buie, Southwest Research Institute