Event between 07LJ38 and star GA0900:06236574 with event index number of 2028362
Geocentric closest approach at 2021/07/16 22:02:19 UTC
J2000 position of star is 17:58:05.5 +01:32:15
Equinox of date position of star is 17:59:10.4 +01:32:13
Stellar brightness G=14.8,
use SENSEUP=128 with the MallinCam and and exposure
time of 2 seconds with the QHY174 camera.
Star is 72 degrees from the moon.
Moon is 44% illuminated.
TNO apparent brightness V=23.2
TNO is 38.6 AU from the Sun
and 37.7 AU from the Earth.
The TNO is moving 22.3
km/sec on the sky relative to the star, or,
2.9 arcsec/hr.
The 1-sigma error in the time of the event is 230 seconds.
The 1-sigma cross-track error in the shadow position is
2409 km.
The TNO has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 9.2 sec chord
Diameter=84.1 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATNEAR
Star training set for 07LJ38, (2021/07/16 22:02UT) Object RA Dec mag sep mel Antares 16:30:43.9 -26:28:41 0.9 35.21 52 60Bet Oph 17:44:32.2 +04:33:36 2.8 4.74 68 PPM 164858 17:57:24.2 +00:40:08 5.7 0.98 71 PPM 164835 17:56:42.7 +02:04:23 7.4 0.82 71 PPM 164958 18:00:54.0 +01:20:11 10.0 0.47 72 PPM 164896 17:58:49.4 +01:51:22 11.0 0.33 71 07LJ38 17:59:10.9 +01:32:13 14.8 72 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 07LJ38, (2021/07/16 22:02UT) Object RA Dec mag sep mel Antares 16:29:24.4 -26:25:56 0.9 35.21 52 60Bet Oph 17:43:28.3 +04:34:06 2.8 4.74 68 PPM 164858 17:56:18.3 +00:40:14 5.7 0.98 71 PPM 164835 17:55:37.5 +02:04:30 7.4 0.82 71 PPM 164958 17:59:48.4 +01:20:10 10.0 0.47 72 PPM 164896 17:57:44.1 +01:51:25 11.0 0.33 71 07LJ38 17:58:05.5 +01:32:15 14.8 72 Positions are for J2000
Event circumstances last updated at 2021/05/18 00:33:43 UT
Marc W. Buie, Southwest Research Institute