RECON: TNO occultation with 416400

Event between (416400) 03UZ117 and star GA0920:00439526 with event index number of 209602

Geocentric closest approach at 2019/08/23 20:24:17 UTC

J2000 position of star is 04:34:21.6 +02:58:13
Equinox of date position of star is 04:35:19.6 +03:00:27
Stellar brightness G=12.7, use SENSEUP=16
Star is 16 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=21.1

TNO is 38.7 AU from the Sun and 38.8 AU from the Earth.
The TNO is moving 13.8 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 229 seconds.
The 1-sigma cross-track error in the shadow position is 2917 km.

The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 41.7 sec chord
Diameter=234.9 km assuming a 30% albedo -- 17.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 416400, (2019/08/23 20:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.0 +16:32:50  0.8 13.54   7
67Bet Eri      05:08:49.0 -05:03:45  2.8 11.61  27
PPM 147738     04:38:14.5 +01:02:12  5.3  2.10  18
PPM 147588     04:29:51.8 +02:24:48  8.4  1.50  16
PPM 147677     04:34:48.1 +03:29:16  8.8  0.50  15
PPM 147688     04:35:20.7 +02:46:59 10.7  0.23  16
416400         04:35:23.3 +03:00:36 12.7        16
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 416400, (2019/08/23 20:24UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.54   7
67Bet Eri      05:07:50.9 -05:05:13  2.8 11.61  27
PPM 147738     04:37:13.7 +00:59:54  5.3  2.10  18
PPM 147588     04:28:50.3 +02:22:17  8.4  1.50  16
PPM 147677     04:33:46.2 +03:26:52  8.8  0.50  15
PPM 147688     04:34:19.1 +02:44:36 10.7  0.23  16
416400         04:34:21.6 +02:58:13 12.7        16
Positions are for J2000

Event circumstances last updated at 2018/06/12 07:41:24 UT

Marc W. Buie, Southwest Research Institute

RECON