Event between (278361) 07JJ43 and star GA0640:18158746 with event index number of 2182873
Geocentric closest approach at 2027/07/03 17:22:30 UTC
J2000 position of star is 17:40:52.6 -24:46:55
Equinox of date position of star is 17:42:21.9 -24:47:34
Stellar brightness G=15.6,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon.
Moon is 0% illuminated.
Apparent brightness V=20.6
Object is 40.5 AU from the Sun
and 39.5 AU from the Earth.
Apparent velocity is 23.4
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 394 seconds.
The 1-sigma cross-track error in the shadow position is
2150 km.
The object has an absolute magnitude Hv=4.5
Diameter=758.6 km assuming a 5% albedo -- 32.6 sec chord
Diameter=309.7 km assuming a 30% albedo -- 13.3 sec chord
Dynamical classification is SCATNEAR
Star training set for 278361, (2027/07/03 17:06UT) Object RA Dec mag sep mel Antares 16:31:05.9 -26:29:26 0.9 16.18 154 35Eta Oph 17:11:57.4 -15:45:25 2.6 11.53 160 51 Oph 17:33:05.8 -23:58:53 4.8 2.30 168 PPM 267136 17:42:30.7 -23:50:54 8.2 0.95 170 PPM 267145 17:42:55.2 -24:26:35 9.5 0.36 170 278361 17:42:34.1 -24:47:39 15.6 170 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 278361, (2027/07/03 17:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.18 154 35Eta Oph 17:10:22.7 -15:43:29 2.6 11.53 160 51 Oph 17:31:25.0 -23:57:46 4.8 2.30 168 PPM 267136 17:40:49.9 -23:50:10 8.2 0.95 170 PPM 267145 17:41:14.0 -24:25:52 9.5 0.36 170 278361 17:40:52.6 -24:46:55 15.6 170 Positions are for J2000
Event circumstances last updated at 2024/03/06 04:27:56 UT
Marc W. Buie, Southwest Research Institute