RECON: TNO occultation with 492338

Event between (492338) 14FW and star GA0780:04952286 with event index number of 200528

Geocentric closest approach at 2019/07/02 12:43:15 UTC

J2000 position of star is 15:52:41.1 -11:54:26
Equinox of date position of star is 15:53:45.6 -11:57:51
Stellar brightness G=16.1, use SENSEUP=128
Star is 141 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=20.6

TNO is 11.3 AU from the Sun and 10.5 AU from the Earth.
The TNO is moving 11.9 km/sec on the sky relative to the star, or, 5.6 arcsec/hr.
The 1-sigma error in the time of the event is 179 seconds.
The 1-sigma cross-track error in the shadow position is 1110 km.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 5.3 sec chord
Diameter=25.8 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 492338, (2019/07/02 12:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.4 -26:28:25  0.9 16.90 153
8Bet1Sco       16:06:34.4 -19:51:26  2.6  8.47 146
PPM 230856     15:52:43.9 -14:11:28  6.2  2.24 142
PPM 230863     15:53:01.9 -12:35:41  7.7  0.66 141
PPM 230890     15:54:05.8 -11:53:27  9.5  0.11 141
492338         15:53:45.8 -11:57:51 16.1       142
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 492338, (2019/07/02 12:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.90 153
8Bet1Sco       16:05:26.2 -19:48:20  2.6  8.47 146
PPM 230856     15:51:38.4 -14:08:01  6.2  2.24 142
PPM 230863     15:51:57.0 -12:32:15  7.7  0.66 141
PPM 230890     15:53:01.1 -11:50:02  9.5  0.11 141
492338         15:52:41.1 -11:54:26 16.1       141
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:21:45 UT

Marc W. Buie, Southwest Research Institute

RECON