Event between (85627) 98HP151 and star GA0640:18920074 with event index number of 2407482
Geocentric closest approach at 2025/07/17 11:31:33 UTC
J2000 position of star is 17:43:10.4 -24:10:43
Equinox of date position of star is 17:44:40.2 -24:11:18
Stellar brightness G=16.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 112 degrees from the moon.
Moon is 56% illuminated.
Apparent brightness V=23.4
Object is 40.9 AU from the Sun
and 40.0 AU from the Earth.
Apparent velocity is 20.9
km/sec on the sky relative to the star, or,
2.6 arcsec/hr.
The 1-sigma error in the time of the event is 331 seconds.
The 1-sigma cross-track error in the shadow position is
1931 km.
The object has an absolute magnitude Hv=7.2
Diameter=199.5 km assuming a 5% albedo -- 10.2 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CLASSICAL
Star training set for 85627, (2025/07/17 11:32UT) Object RA Dec mag sep mel Antares 16:30:58.7 -26:29:11 0.9 16.81 128 35Eta Oph 17:11:50.7 -15:45:17 2.6 11.43 119 PPM 267309 17:49:18.3 -22:29:06 6.1 2.00 111 PPM 267136 17:42:23.5 -23:50:51 8.2 0.63 112 PPM 267169 17:44:04.4 -24:18:05 9.6 0.19 112 85627 17:44:44.2 -24:11:19 16.8 111 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, (2025/07/17 11:32UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 16.81 128 35Eta Oph 17:10:22.7 -15:43:29 2.6 11.43 119 PPM 267309 17:47:45.6 -22:28:40 6.1 2.00 111 PPM 267136 17:40:49.9 -23:50:10 8.2 0.63 112 PPM 267169 17:42:30.5 -24:17:27 9.6 0.19 112 85627 17:43:10.4 -24:10:43 16.8 112 Positions are for J2000
Event circumstances last updated at 2024/06/18 02:50:48 UT
Marc W. Buie, Southwest Research Institute