Event between 15VN170 and star GA1040:00370187 with event index number of 1018991
Geocentric closest approach at 2019/12/29 15:40:37 UTC
J2000 position of star is 03:41:40.1 +15:16:23
Equinox of date position of star is 03:42:44.6 +15:20:00
Stellar brightness G=14.4,
use SENSEUP=128
Star is 99 degrees from the moon.
Moon is 12% illuminated.
TNO apparent brightness V=23.9
TNO is 38.1 AU from the Sun
and 37.4 AU from the Earth.
The TNO is moving 18.1
km/sec on the sky relative to the star, or,
2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1124 seconds.
The 1-sigma cross-track error in the shadow position is
3394 km.
The TNO has an absolute magnitude Hv=8.0
Diameter=150.0 km assuming a 5% albedo -- 8.3 sec chord
Diameter=61.2 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is SCATEXTD
Star training set for 15VN170, (2019/12/29 15:41UT) Object RA Dec mag sep mel Aldebaran 04:37:04.2 +16:32:53 0.8 13.10 111 Menkar 03:03:19.6 +04:10:01 2.5 14.80 86 PPM 119236 03:38:55.4 +15:29:41 6.4 0.95 98 PPM 119242 03:39:33.8 +15:12:48 8.4 0.79 98 PPM 119287 03:43:09.0 +14:59:06 9.3 0.36 99 PPM 119268 03:41:24.0 +15:15:50 10.9 0.34 98 15VN170 03:42:47.6 +15:20:10 14.4 99 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 15VN170, (2019/12/29 15:41UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:30 0.8 13.10 111 Menkar 03:02:16.8 +04:05:21 2.5 14.80 86 PPM 119236 03:37:47.9 +15:25:49 6.4 0.95 98 PPM 119242 03:38:26.4 +15:08:57 8.4 0.79 98 PPM 119287 03:42:01.6 +14:55:20 9.3 0.36 99 PPM 119268 03:40:16.5 +15:12:01 10.9 0.34 98 15VN170 03:41:40.1 +15:16:23 14.4 99 Positions are for J2000
Event circumstances last updated at 2019/01/30 20:49:16 UT
Marc W. Buie, Southwest Research Institute