Event between (470309) 07JK43 and star GA1040:06693875 with event index number of 2229184
Geocentric closest approach at 2025/05/19 12:02:32 UTC
J2000 position of star is 18:46:32.9 +14:54:25
Equinox of date position of star is 18:47:39.5 +14:56:05
Stellar brightness G=14.1,
use SENSEUP=64 with the MallinCam and and exposure
time of 1 seconds with the QHY174 camera.
Star is 51 degrees from the moon.
Moon is 61% illuminated.
Apparent brightness V=21.7
Object is 26.4 AU from the Sun
and 25.8 AU from the Earth.
Apparent velocity is 21.5
km/sec on the sky relative to the star, or,
4.1 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is
1258 km.
The object has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 9.8 sec chord
Diameter=85.7 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURS
Star training set for 470309, (2025/05/19 12:03UT) Object RA Dec mag sep mel Vega 18:37:47.8 +38:48:30 0.0 23.97 69 Tarazed 19:47:28.0 +10:40:36 2.7 15.17 37 PPM 135257 18:49:31.6 +15:25:27 6.5 0.66 51 PPM 135235 18:48:39.8 +14:54:00 9.4 0.24 50 470309 18:47:42.1 +14:56:09 14.1 50 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 470309, (2025/05/19 12:03UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 23.97 69 Tarazed 19:46:15.6 +10:36:48 2.7 15.17 37 PPM 135257 18:48:22.7 +15:23:39 6.5 0.66 51 PPM 135235 18:47:30.6 +14:52:14 9.4 0.24 50 470309 18:46:32.9 +14:54:25 14.1 51 Positions are for J2000
Event circumstances last updated at 2024/06/13 03:50:24 UT
Marc W. Buie, Southwest Research Institute