RECON: TNO occultation with 40314

Event between (40314) 99KR16 and star UC4-421-065520 with event index number of 184489

Geocentric closest approach at 2019/03/28 14:26:22 UTC

J2000 position of star is 16:06:06.1 -05:57:50
Equinox of date position of star is 16:07:03.5 -06:00:40
Stellar brightness R=14.9, use SENSEUP=128
Star is 43 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=21.0

TNO is 34.6 AU from the Sun and 34.0 AU from the Earth.
The TNO is moving 14.5 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 159 seconds.
The 1-sigma cross-track error in the shadow position is 2017 km.

The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 33.0 sec chord
Diameter=195.4 km assuming a 30% albedo -- 13.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 40314, (2019/03/28 14:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.4 -26:28:23  0.9 21.21  33
1Del Oph       16:15:21.3 -03:44:33  2.7  3.06  43
PPM 199284     16:07:01.4 -06:11:26  6.5  0.18  43
PPM 199279     16:06:36.1 -06:04:06  8.8  0.14  44
40314          16:07:07.6 -06:00:53 14.9        43
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 40314, (2019/03/28 14:26UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.21  33
1Del Oph       16:14:20.7 -03:41:42  2.7  3.06  43
PPM 199284     16:05:59.8 -06:08:23  6.5  0.18  43
PPM 199279     16:05:34.5 -06:01:02  8.8  0.14  44
40314          16:06:06.1 -05:57:50 14.9        43
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:49:05 UT

Marc W. Buie, Southwest Research Institute

RECON