Event between (47171) Lempo and star GA1040:00420585 with event index number of 2242528
Geocentric closest approach at 2027/11/29 22:13:13 UTC
J2000 position of star is 04:01:26.5 +15:28:33
Equinox of date position of star is 04:02:48.7 +15:32:31
Stellar brightness G=15.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 152 degrees from the moon.
Moon is 3% illuminated.
Apparent brightness V=19.8
Object is 31.3 AU from the Sun
and 30.3 AU from the Earth.
Apparent velocity is 24.3
km/sec on the sky relative to the star, or,
4.0 arcsec/hr.
The 1-sigma error in the time of the event is 63 seconds.
The 1-sigma cross-track error in the shadow position is
1194 km.
The object has an absolute magnitude Hv=4.9
Diameter=613.8 km assuming a 5% albedo -- 25.5 sec chord
Diameter=250.6 km assuming a 30% albedo -- 10.4 sec chord
Dynamical classification is 3:2E
Star training set for 47171, (2027/11/29 22:15UT) Object RA Dec mag sep mel Aldebaran 04:37:31.5 +16:33:48 0.8 8.35 160 44Zet Per 03:55:53.6 +31:57:51 2.8 16.49 154 PPM 119638 04:09:17.0 +15:14:07 6.1 1.54 153 PPM 119538 04:02:19.3 +15:33:06 8.2 0.17 152 47171 04:03:01.4 +15:33:08 15.8 152 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 47171, (2027/11/29 22:15UT) Object RA Dec mag sep mel Aldebaran 04:35:55.3 +16:30:29 0.8 8.35 160 44Zet Per 03:54:07.9 +31:53:01 2.8 16.49 154 PPM 119638 04:07:42.2 +15:09:46 6.1 1.54 153 PPM 119538 04:00:44.5 +15:28:30 8.2 0.17 152 47171 04:01:26.5 +15:28:33 15.8 152 Positions are for J2000
Event circumstances last updated at 2024/03/06 04:34:37 UT
Marc W. Buie, Southwest Research Institute