Event between 11MM4 and star GA1640:01166561 with event index number of 232470
Geocentric closest approach at 2019/12/21 18:44:38 UTC
J2000 position of star is 11:57:26.0 +74:39:56
Equinox of date position of star is 11:58:25.6 +74:33:34
Stellar brightness G=14.4,
use SENSEUP=64
Star is 85 degrees from the moon.
Moon is 22% illuminated.
TNO apparent brightness V=22.7
TNO is 19.8 AU from the Sun
and 19.4 AU from the Earth.
The TNO is moving 29.1
km/sec on the sky relative to the star, or,
7.4 arcsec/hr.
The 1-sigma error in the time of the event is 51 seconds.
The 1-sigma cross-track error in the shadow position is
4843 km.
The TNO has an absolute magnitude Hv=9.5
Diameter=77.3 km assuming a 5% albedo -- 2.7 sec chord
Diameter=31.5 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
Star training set for 11MM4, (2019/12/21 18:45UT) Object RA Dec mag sep mel Deneb 20:42:06.8 +45:21:09 1.3 55.72 101 Kochab 14:50:40.1 +74:04:26 2.1 11.39 83 PPM 008128 12:19:43.0 +75:03:00 5.5 1.48 85 PPM 008015 11:52:00.5 +75:14:41 8.3 0.81 86 PPM 008021 11:53:42.5 +74:51:15 9.6 0.43 86 PPM 008033 11:56:08.7 +74:37:56 10.4 0.17 85 11MM4 11:58:28.3 +74:33:16 14.4 85 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 11MM4, (2019/12/21 18:45UT) Object RA Dec mag sep mel Deneb 20:41:25.9 +45:16:49 1.3 55.72 101 Kochab 14:50:42.2 +74:09:20 2.1 11.39 83 PPM 008128 12:18:50.0 +75:09:39 5.5 1.48 85 PPM 008015 11:50:55.3 +75:21:21 8.3 0.81 86 PPM 008021 11:52:38.1 +74:57:55 9.6 0.43 86 PPM 008033 11:55:05.4 +74:44:36 10.4 0.17 85 11MM4 11:57:26.0 +74:39:56 14.4 85 Positions are for J2000
Event circumstances last updated at 2019/01/30 20:46:43 UT
Marc W. Buie, Southwest Research Institute