RECON: TNO occultation with 00KL4

Event between 00KL4 and star UC4-426-074210 with event index number of 207656

Geocentric closest approach at 2019/08/20 01:37:04 UTC

J2000 position of star is 17:57:17.4 -04:59:59
Equinox of date position of star is 17:58:13.8 -05:00:02
Stellar brightness R=16.0, use SENSEUP=128
Star is 108 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=23.7

TNO is 39.2 AU from the Sun and 38.7 AU from the Earth.
The TNO is moving 14.1 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 477 seconds.
The 1-sigma cross-track error in the shadow position is 3563 km.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 13.1 sec chord
Diameter=75.3 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 00KL4, (2019/08/20 01:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.9 -26:28:26  0.9 30.00 126
60Bet Oph      17:44:26.6 +04:33:38  2.8 10.17 111
PPM 201278     18:00:39.3 -04:49:17  5.8  0.61 107
PPM 201214     17:57:22.6 -05:19:00  8.3  0.40 108
PPM 201235     17:58:34.3 -04:58:14 10.0  0.07 108
00KL4          17:58:20.1 -05:00:02 16.0       108
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, (2019/08/20 01:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 30.00 126
60Bet Oph      17:43:28.3 +04:34:05  2.8 10.17 111
PPM 201278     17:59:36.8 -04:49:18  5.8  0.61 107
PPM 201214     17:56:19.8 -05:18:54  8.3  0.40 108
PPM 201235     17:57:31.7 -04:58:11 10.0  0.07 108
00KL4          17:57:17.4 -04:59:59 16.0       108
Positions are for J2000

Event circumstances last updated at 2017/09/01 17:01:52 UT

Marc W. Buie, Southwest Research Institute

RECON