Event between (121725) Aphidas and star GA1020:03447681 with event index number of 1002958
Geocentric closest approach at 2020/11/26 06:18:13 UTC
J2000 position of star is 10:55:51.5 +12:46:24
Equinox of date position of star is 10:56:56.7 +12:39:45
Stellar brightness G=16.6,
use SENSEUP=128
Star is 141 degrees from the moon.
Moon is 85% illuminated.
TNO apparent brightness V=24.2
TNO is 25.1 AU from the Sun
and 25.2 AU from the Earth.
The TNO is moving 8.0
km/sec on the sky relative to the star, or,
1.6 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is
1088 km.
The TNO has an absolute magnitude Hv=10.0
Diameter=114.8 km assuming a 5% albedo -- 7.5 sec chord
Diameter=46.9 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CENTAURR
Star training set for 121725, (2020/11/26 06:18UT) Object RA Dec mag sep mel Regulus 10:09:29.0 +11:51:51 1.3 11.62 130 68Del Leo 11:15:13.0 +20:24:32 2.6 8.90 141 52 Leo 10:47:31.6 +14:05:01 5.5 2.70 138 PPM 127810 10:55:23.4 +12:15:33 8.1 0.56 141 PPM 127827 10:56:44.8 +12:26:52 9.6 0.22 141 121725 10:56:57.5 +12:39:41 16.6 141 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 121725, (2020/11/26 06:18UT) Object RA Dec mag sep mel Regulus 10:08:22.0 +11:58:02 1.3 11.62 130 68Del Leo 11:14:06.7 +20:31:23 2.6 8.90 141 52 Leo 10:46:25.1 +14:11:39 5.5 2.70 138 PPM 127810 10:54:17.4 +12:22:15 8.1 0.56 141 PPM 127827 10:55:38.9 +12:33:35 9.6 0.22 141 121725 10:55:51.5 +12:46:24 16.6 141 Positions are for J2000
Event circumstances last updated at 2020/08/28 21:57:28 UT
Marc W. Buie, Southwest Research Institute