Event between (603108) 14WB509 and star GA1160:00514513 with event index number of 2721825
Geocentric closest approach at 2025/07/22 17:32:01 UTC
J2000 position of star is 03:28:57.5 +27:33:47
Equinox of date position of star is 03:30:20.3 +27:38:26
Stellar brightness G=13.2,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 36 degrees from the moon.
Moon is 6% illuminated.
TNO apparent brightness V=22.3
TNO is 35.1 AU from the Sun
and 35.5 AU from the Earth.
The TNO is moving 19.1
km/sec on the sky relative to the star, or,
2.7 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is
1668 km.
The TNO has an absolute magnitude Hv=6.7
Diameter=274.2 km assuming a 5% albedo -- 14.5 sec chord
Diameter=111.9 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is SCATNEAR
Star training set for 603108, (2025/07/22 17:31UT) Object RA Dec mag sep mel Aldebaran 04:37:23.4 +16:33:31 0.8 19.02 25 44Zet Per 03:55:44.7 +31:57:27 2.8 6.96 30 PPM 092402 03:21:53.5 +29:08:21 4.5 2.41 38 PPM 092568 03:32:33.7 +27:48:35 8.0 0.48 36 PPM 092519 03:29:11.1 +27:50:21 9.8 0.35 36 PPM 092540 03:30:39.3 +27:30:00 10.1 0.15 36 603108 03:30:30.2 +27:38:59 13.2 36 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 603108, (2025/07/22 17:31UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 19.02 25 44Zet Per 03:54:07.9 +31:53:01 2.8 6.96 30 PPM 092402 03:20:20.3 +29:02:54 4.5 2.41 38 PPM 092568 03:31:00.8 +27:43:27 8.0 0.48 36 PPM 092519 03:27:38.3 +27:45:06 9.8 0.35 36 PPM 092540 03:29:06.6 +27:24:48 10.1 0.15 36 603108 03:28:57.5 +27:33:47 13.2 36 Positions are for J2000
Event circumstances last updated at 2022/10/27 03:13:58 UT
Marc W. Buie, Southwest Research Institute