Event between (600217) 11QY100 and star GA0880:03454371 with event index number of 2731267
Geocentric closest approach at 2028/01/23 22:35:09 UTC
J2000 position of star is 08:03:27.1 -00:32:28
Equinox of date position of star is 08:04:34.8 -00:36:16
Stellar brightness G=13.0,
use SENSEUP=32 with the MallinCam and and exposure
time of 500 milli-seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 7% illuminated.
TNO apparent brightness V=21.6
TNO is 21.7 AU from the Sun
and 20.8 AU from the Earth.
The TNO is moving 22.5
km/sec on the sky relative to the star, or,
5.4 arcsec/hr.
The 1-sigma error in the time of the event is 135 seconds.
The 1-sigma cross-track error in the shadow position is
1200 km.
The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 6.1 sec chord
Diameter=56.1 km assuming a 30% albedo -- 2.5 sec chord
Dynamical classification is CENTAURR
Star training set for 600217, (2028/01/23 22:35UT) Object RA Dec mag sep mel Sirius 06:46:23.3 -16:45:16 -1.5 25.18 137 Alphard 09:28:58.0 -08:46:54 2.0 22.47 122 29Zet Mon 08:10:00.2 -03:04:03 4.0 2.76 140 28 Mon 08:02:38.9 -01:28:21 6.7 1.02 143 PPM 177246 08:03:36.2 -01:02:38 9.1 0.53 143 PPM 177262 08:05:20.6 -00:18:59 10.3 0.33 143 600217 08:04:53.0 -00:37:18 13.0 143 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 600217, (2028/01/23 22:35UT) Object RA Dec mag sep mel Sirius 06:45:08.0 -16:43:25 -1.5 25.18 137 Alphard 09:27:35.2 -08:39:30 2.0 22.47 122 29Zet Mon 08:08:35.6 -02:59:02 4.0 2.76 140 28 Mon 08:01:13.5 -01:23:35 6.7 1.02 143 PPM 177246 08:02:10.5 -00:57:51 9.1 0.53 143 PPM 177262 08:03:54.5 -00:14:08 10.3 0.33 143 600217 08:03:27.1 -00:32:28 13.0 143 Positions are for J2000
Event circumstances last updated at 2022/02/05 00:29:12 UT
Marc W. Buie, Southwest Research Institute