RECON: TNO occultation with 416400

Event between (416400) 03UZ117 and star GA0920:00435840 with event index number of 216902

Geocentric closest approach at 2019/10/27 02:39:38 UTC

J2000 position of star is 04:33:06.4 +02:21:23
Equinox of date position of star is 04:34:04.0 +02:23:39
Stellar brightness G=16.0, use SENSEUP=128
Star is 131 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=21.0

TNO is 38.7 AU from the Sun and 37.9 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 2361 km.

The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 26.6 sec chord
Diameter=234.9 km assuming a 30% albedo -- 10.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 416400, (2019/10/27 02:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.6 +16:32:51  0.8 14.17 129
67Bet Eri      05:08:49.5 -05:03:44  2.8 11.43 122
PPM 147584     04:29:33.7 +01:25:24  5.5  1.50 132
PPM 147588     04:29:52.3 +02:24:50  8.4  1.07 132
PPM 147655     04:33:14.3 +02:36:54  9.3  0.31 131
416400         04:34:08.3 +02:23:49 16.0       131
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, (2019/10/27 02:40UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.17 129
67Bet Eri      05:07:50.9 -05:05:13  2.8 11.43 122
PPM 147584     04:28:32.1 +01:22:50  5.5  1.50 132
PPM 147588     04:28:50.3 +02:22:17  8.4  1.07 132
PPM 147655     04:32:12.2 +02:34:27  9.3  0.31 131
416400         04:33:06.4 +02:21:23 16.0       131
Positions are for J2000

Event circumstances last updated at 2018/06/12 07:49:02 UT

Marc W. Buie, Southwest Research Institute

RECON