RECON: TNO occultation with 10JJ124

Event between 10JJ124 and star GA0700:25622314 with event index number of 288247

Geocentric closest approach at 2020/03/01 08:19:54 UTC

J2000 position of star is 18:31:15.6 -18:15:19
Equinox of date position of star is 18:32:23.9 -18:14:25
Stellar brightness G=15.4, use SENSEUP=128
Star is 137 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=20.8

TNO is 24.9 AU from the Sun and 25.3 AU from the Earth.
The TNO is moving 21.0 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 204 seconds.
The 1-sigma cross-track error in the shadow position is 3897 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=284.5 km assuming a 5% albedo -- 13.6 sec chord
Diameter=116.1 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10JJ124, (2020/03/01 08:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:38.8 -26:28:30  0.9 29.26 163
Nunki          18:56:30.9 -26:16:12  2.0  9.77 132
PPM 234652     18:32:37.2 -18:23:14  5.0  0.15 137
PPM 234648     18:32:34.1 -18:14:49  8.0  0.03 137
10JJ124        18:32:26.4 -18:14:23 15.4       137
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 10JJ124, (2020/03/01 08:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 29.26 163
Nunki          18:55:15.9 -26:17:49  2.0  9.77 132
PPM 234652     18:31:26.3 -18:24:10  5.0  0.15 137
PPM 234648     18:31:23.3 -18:15:45  8.0  0.03 137
10JJ124        18:31:15.6 -18:15:19 15.4       137
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:19:20 UT

Marc W. Buie, Southwest Research Institute

RECON