RECON: TNO occultation with 07LJ38

Event between 07LJ38 and star GA0920:05806120 with event index number of 263662

Geocentric closest approach at 2020/05/30 17:33:24 UTC

J2000 position of star is 17:54:53.7 +02:17:29
Equinox of date position of star is 17:55:52.9 +02:17:21
Stellar brightness G=16.0, use SENSEUP=128
Star is 98 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=23.2

TNO is 38.5 AU from the Sun and 37.6 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 190 seconds.
The 1-sigma cross-track error in the shadow position is 2024 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, (2020/05/30 17:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.7 -26:28:32  0.9 35.37  83
60Bet Oph      17:44:28.9 +04:33:37  2.8  3.65  95
PPM 164858     17:57:20.8 +00:40:08  5.7  1.66  98
PPM 164835     17:56:39.3 +02:04:23  7.4  0.28  98
PPM 164836     17:56:39.6 +02:28:34  9.8  0.26  98
PPM 164815     17:55:53.2 +02:21:02 10.7  0.06  98
07LJ38         17:55:55.4 +02:17:21 16.0        98
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, (2020/05/30 17:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 35.37  83
60Bet Oph      17:43:28.3 +04:34:05  2.8  3.65  95
PPM 164858     17:56:18.3 +00:40:14  5.7  1.66  98
PPM 164835     17:55:37.5 +02:04:30  7.4  0.28  98
PPM 164836     17:55:38.0 +02:28:41  9.8  0.26  98
PPM 164815     17:54:51.6 +02:21:10 10.7  0.06  98
07LJ38         17:54:53.7 +02:17:29 16.0        98
Positions are for J2000

Event circumstances last updated at 2019/08/03 22:20:24 UT

Marc W. Buie, Southwest Research Institute

RECON