Event between (578997) 14JR92 and star GA0880:06703991 with event index number of 2556970
Geocentric closest approach at 2025/07/27 18:08:46 UTC
J2000 position of star is 17:59:58.4 -00:46:50
Equinox of date position of star is 18:01:06.1 -00:46:49
Stellar brightness G=16.3,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon.
Moon is 10% illuminated.
TNO apparent brightness V=23.3
TNO is 33.7 AU from the Sun
and 32.9 AU from the Earth.
The TNO is moving 20.6
km/sec on the sky relative to the star, or,
3.1 arcsec/hr.
The 1-sigma error in the time of the event is 198 seconds.
The 1-sigma cross-track error in the shadow position is
2440 km.
The TNO has an absolute magnitude Hv=7.9
Diameter=157.8 km assuming a 5% albedo -- 7.6 sec chord
Diameter=64.4 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
Star training set for 578997, (2025/07/27 18:09UT) Object RA Dec mag sep mel Antares 16:30:58.8 -26:29:11 0.9 33.65 88 60Bet Oph 17:44:44.2 +04:33:30 2.8 6.75 102 PPM 164879 17:58:22.9 +00:03:54 5.9 1.12 106 PPM 180223 18:04:06.9 -01:20:04 8.2 0.90 108 PPM 180213 18:00:59.0 -00:29:24 9.8 0.30 107 PPM 180211 18:00:24.6 -00:38:13 10.2 0.26 107 578997 18:01:17.5 -00:46:48 16.3 107 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 578997, (2025/07/27 18:09UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 33.65 88 60Bet Oph 17:43:28.3 +04:34:06 2.8 6.75 102 PPM 164879 17:57:04.3 +00:03:59 5.9 1.12 106 PPM 180223 18:02:47.4 -01:20:12 8.2 0.90 108 PPM 180213 17:59:40.1 -00:29:24 9.8 0.30 107 PPM 180211 17:59:05.6 -00:38:12 10.2 0.26 107 578997 17:59:58.4 -00:46:50 16.3 107 Positions are for J2000
Event circumstances last updated at 2021/11/12 00:14:22 UT
Marc W. Buie, Southwest Research Institute