Event between 07LF38 and star GA1020:04542694 with event index number of 1122851
Geocentric closest approach at 2021/08/03 19:07:04 UTC
J2000 position of star is 17:25:09.0 +13:05:24
Equinox of date position of star is 17:26:08.0 +13:04:20
Stellar brightness G=14.7,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon.
Moon is 21% illuminated.
TNO apparent brightness V=23.3
TNO is 54.4 AU from the Sun
and 53.9 AU from the Earth.
The TNO is moving 19.4
km/sec on the sky relative to the star, or,
1.8 arcsec/hr.
The 1-sigma error in the time of the event is 274 seconds.
The 1-sigma cross-track error in the shadow position is
5286 km.
The TNO has an absolute magnitude Hv=5.9
Diameter=400.0 km assuming a 5% albedo -- 20.7 sec chord
Diameter=163.3 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is SCATNEAR
Star training set for 07LF38, (2021/08/03 19:07UT) Object RA Dec mag sep mel Vega 18:37:40.2 +38:48:17 0.0 30.21 114 Rasalhague 17:35:56.3 +12:32:45 2.1 2.44 143 PPM 133514 17:33:15.2 +11:54:57 6.4 2.08 144 PPM 133336 17:24:52.7 +13:04:53 8.5 0.31 143 PPM 133356 17:25:53.4 +13:18:59 9.8 0.25 143 PPM 133374 17:26:52.3 +13:01:41 10.8 0.18 143 07LF38 17:26:08.8 +13:04:20 14.7 143 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 07LF38, (2021/08/03 19:07UT) Object RA Dec mag sep mel Vega 18:36:56.7 +38:47:07 0.0 30.21 114 Rasalhague 17:34:56.3 +12:33:31 2.1 2.44 143 PPM 133514 17:32:14.8 +11:55:48 6.4 2.08 144 PPM 133336 17:23:53.0 +13:06:00 8.5 0.31 143 PPM 133356 17:24:53.7 +13:20:04 9.8 0.25 143 PPM 133374 17:25:52.5 +13:02:44 10.8 0.18 143 07LF38 17:25:09.0 +13:05:24 14.7 143 Positions are for J2000
Event circumstances last updated at 2021/04/19 23:04:13 UT
Marc W. Buie, Southwest Research Institute