Event between 04XR190 and star GA1040:00880882 with event index number of 2573550
Geocentric closest approach at 2021/10/18 02:58:06 UTC
J2000 position of star is 05:26:31.8 +14:08:32
Equinox of date position of star is 05:27:45.9 +14:09:34
Stellar brightness G=16.2,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon.
Moon is 94% illuminated.
TNO apparent brightness V=21.9
TNO is 56.9 AU from the Sun
and 56.4 AU from the Earth.
The TNO is moving 15.4
km/sec on the sky relative to the star, or,
1.4 arcsec/hr.
The 1-sigma error in the time of the event is 308 seconds.
The 1-sigma cross-track error in the shadow position is
4489 km.
The TNO has an absolute magnitude Hv=4.3
Diameter=816.6 km assuming a 5% albedo -- 52.9 sec chord
Diameter=333.4 km assuming a 30% albedo -- 21.6 sec chord
Dynamical classification is SCATEXTD
Star training set for 04XR190, (2021/10/18 02:58UT) Object RA Dec mag sep mel Betelgeuse 05:56:21.1 +07:24:34 0.4 9.74 91 Bellatrix 05:26:18.1 +06:22:04 1.6 7.80 84 PPM 120962 05:28:28.8 +15:16:28 6.1 1.13 85 PPM 120966 05:28:35.9 +14:02:46 8.0 0.23 85 PPM 120959 05:28:11.2 +14:02:30 10.5 0.16 85 04XR190 05:27:46.0 +14:09:34 16.2 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 04XR190, (2021/10/18 02:58UT) Object RA Dec mag sep mel Betelgeuse 05:55:10.3 +07:24:26 0.4 9.74 91 Bellatrix 05:25:07.8 +06:20:58 1.6 7.80 84 PPM 120962 05:27:13.9 +15:15:27 6.1 1.13 85 PPM 120966 05:27:21.7 +14:01:45 8.0 0.23 85 PPM 120959 05:26:57.0 +14:01:28 10.5 0.16 85 04XR190 05:26:31.8 +14:08:32 16.2 85 Positions are for J2000
Event circumstances last updated at 2021/10/02 02:23:26 UT
Marc W. Buie, Southwest Research Institute