Event between (591370) 13ME14 and star GA1040:18693141 with event index number of 2706742
Geocentric closest approach at 2025/12/27 14:59:52 UTC
J2000 position of star is 22:10:07.4 +15:59:43
Equinox of date position of star is 22:11:11.0 +16:06:13
Stellar brightness G=15.9,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon.
Moon is 48% illuminated.
TNO apparent brightness V=23.3
TNO is 23.0 AU from the Sun
and 23.3 AU from the Earth.
The TNO is moving 20.7
km/sec on the sky relative to the star, or,
4.4 arcsec/hr.
The 1-sigma error in the time of the event is 105 seconds.
The 1-sigma cross-track error in the shadow position is
2723 km.
The TNO has an absolute magnitude Hv=9.4
Diameter=80.5 km assuming a 5% albedo -- 3.9 sec chord
Diameter=32.9 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
Star training set for 591370, (2025/12/27 15:00UT) Object RA Dec mag sep mel Deneb 20:42:19.1 +45:22:27 1.3 34.70 62 Markab 23:06:03.4 +15:20:44 2.5 13.18 20 PPM 141171 22:13:06.7 +16:10:10 6.5 0.42 32 PPM 141148 22:12:06.1 +15:50:13 8.3 0.34 32 PPM 141114 22:10:28.3 +16:05:23 9.4 0.22 33 591370 22:11:22.8 +16:07:25 15.9 32 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 591370, (2025/12/27 15:00UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 34.70 62 Markab 23:04:45.8 +15:12:18 2.5 13.18 20 PPM 141171 22:11:51.3 +16:02:25 6.5 0.42 32 PPM 141148 22:10:50.7 +15:42:29 8.3 0.34 32 PPM 141114 22:09:13.0 +15:57:41 9.4 0.22 33 591370 22:10:07.4 +15:59:43 15.9 32 Positions are for J2000
Event circumstances last updated at 2021/11/30 00:11:30 UT
Marc W. Buie, Southwest Research Institute