Event between (85627) 98HP151 and star GA0640:19644894 with event index number of 2407394
Geocentric closest approach at 2025/06/20 00:05:56 UTC
J2000 position of star is 17:45:29.3 -24:11:35
Equinox of date position of star is 17:46:59.1 -24:12:04
Stellar brightness G=16.0,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon.
Moon is 37% illuminated.
Apparent brightness V=23.3
Object is 40.9 AU from the Sun
and 39.9 AU from the Earth.
Apparent velocity is 24.5
km/sec on the sky relative to the star, or,
3.0 arcsec/hr.
The 1-sigma error in the time of the event is 318 seconds.
The 1-sigma cross-track error in the shadow position is
1606 km.
The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 8.7 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2025/06/20 00:06UT) Object RA Dec mag sep mel Antares 16:30:58.4 -26:29:11 0.9 17.32 125 35Eta Oph 17:11:50.4 -15:45:17 2.6 11.81 116 PPM 267309 17:49:18.0 -22:29:06 6.1 1.79 107 PPM 267267 17:47:58.8 -24:08:57 8.4 0.22 108 85627 17:47:02.8 -24:12:05 16.0 108 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 85627, (2025/06/20 00:06UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 17.32 125 35Eta Oph 17:10:22.7 -15:43:29 2.6 11.81 116 PPM 267309 17:47:45.6 -22:28:40 6.1 1.79 107 PPM 267267 17:46:25.3 -24:08:29 8.4 0.22 108 85627 17:45:29.3 -24:11:35 16.0 108 Positions are for J2000
Event circumstances last updated at 2024/06/13 03:55:49 UT
Marc W. Buie, Southwest Research Institute