RECON: TNO occultation with 00KL4

Event between 00KL4 and star GA0840:07083769 with event index number of 270548

Geocentric closest approach at 2020/06/20 13:41:38 UTC

J2000 position of star is 18:07:19.5 -05:01:11
Equinox of date position of star is 18:08:23.9 -05:00:57
Stellar brightness G=16.0, use SENSEUP=128
Star is 160 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=25.9

TNO is 39.2 AU from the Sun and 38.2 AU from the Earth.
The TNO is moving 24.7 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 254 seconds.
The 1-sigma cross-track error in the shadow position is 1904 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=187.9 km assuming a 5% albedo -- 2.4 sec chord
Diameter=76.7 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 00KL4, (2020/06/20 13:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.9 -26:28:32  0.9 31.70 167
60Bet Oph      17:44:29.1 +04:33:37  2.8 11.29 153
PPM 201278     18:00:42.0 -04:49:18  5.8  1.93 160
PPM 201427     18:09:25.0 -04:33:22  8.1  0.52 159
PPM 201408     18:08:21.7 -04:56:41  9.8  0.07 159
00KL4          18:08:24.8 -05:00:57 16.0       159
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 00KL4, (2020/06/20 13:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.70 167
60Bet Oph      17:43:28.3 +04:34:05  2.8 11.29 153
PPM 201278     17:59:36.8 -04:49:18  5.8  1.93 160
PPM 201427     18:08:19.8 -04:33:38  8.1  0.52 159
PPM 201408     18:07:16.4 -04:56:55  9.8  0.07 159
00KL4          18:07:19.5 -05:01:11 16.0       159
Positions are for J2000

Event circumstances last updated at 2020/03/06 21:51:32 UT

Marc W. Buie, Southwest Research Institute

RECON