Event between 04VK78 and star GA1120:00735250 with event index number of 231762
Geocentric closest approach at 2019/12/26 16:52:11 UTC
J2000 position of star is 04:40:06.8 +22:17:36
Equinox of date position of star is 04:41:13.0 +22:19:42
Stellar brightness G=15.9,
use SENSEUP=128
Star is 151 degrees from the moon.
Moon is 0% illuminated.
TNO apparent brightness V=23.7
TNO is 35.4 AU from the Sun
and 34.5 AU from the Earth.
The TNO is moving 22.4
km/sec on the sky relative to the star, or,
3.2 arcsec/hr.
The 1-sigma error in the time of the event is 390 seconds.
The 1-sigma cross-track error in the shadow position is
4028 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=143.2 km assuming a 5% albedo -- 6.2 sec chord
Diameter=58.5 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is 2:1E
Star training set for 04VK78, (2019/12/26 16:52UT) Object RA Dec mag sep mel Aldebaran 04:37:04.2 +16:32:53 0.8 5.87 149 3Iot Aur 04:58:17.9 +33:11:45 2.7 11.49 154 PPM 093646 04:39:26.7 +20:43:24 5.9 1.67 150 PPM 093707 04:43:24.3 +22:58:45 7.2 0.81 152 PPM 093655 04:40:10.7 +22:21:49 10.0 0.26 151 PPM 093670 04:41:18.7 +22:18:44 10.4 0.02 151 04VK78 04:41:18.5 +22:19:52 15.9 151 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 04VK78, (2019/12/26 16:52UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 5.87 149 3Iot Aur 04:56:59.6 +33:09:58 2.7 11.49 154 PPM 093646 04:38:15.8 +20:41:05 5.9 1.67 150 PPM 093707 04:42:12.2 +22:56:33 7.2 0.81 152 PPM 093655 04:38:58.9 +22:19:31 10.0 0.26 151 PPM 093670 04:40:07.0 +22:16:28 10.4 0.02 151 04VK78 04:40:06.8 +22:17:36 15.9 151 Positions are for J2000
Event circumstances last updated at 2018/06/12 07:55:49 UT
Marc W. Buie, Southwest Research Institute