RECON: TNO occultation with 03UY413

Event between 03UY413 and star UC4-589-004029 with event index number of 195043

Geocentric closest approach at 2019/07/03 16:49:52 UTC

J2000 position of star is 01:39:37.0 +27:44:36
Equinox of date position of star is 01:40:36.0 +27:49:53
Stellar brightness R=13.7, use SENSEUP=64
Star is 81 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.9

TNO is 41.8 AU from the Sun and 42.2 AU from the Earth.
The TNO is moving 17.9 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 250 seconds.
The 1-sigma cross-track error in the shadow position is 4498 km.

The TNO has an absolute magnitude Hv=5.5
Diameter=485.3 km assuming a 5% albedo -- 27.1 sec chord
Diameter=198.1 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 03UY413, (2019/07/03 16:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:02.5 +16:32:49  0.8 42.11  44
Hamal          02:08:16.6 +23:33:14  2.0  7.54  76
PPM 090999     01:42:23.9 +25:50:37  6.2  2.03  81
PPM 090983     01:40:42.5 +28:12:36  8.2  0.37  80
PPM 090992     01:41:48.0 +27:39:31 10.6  0.30  80
03UY413        01:40:42.8 +27:50:30 13.7        80
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 03UY413, (2019/07/03 16:50UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 42.11  44
Hamal          02:07:10.6 +23:27:42  2.0  7.54  76
PPM 090999     01:41:18.5 +25:44:44  6.2  2.03  81
PPM 090983     01:39:36.6 +28:06:42  8.2  0.37  80
PPM 090992     01:40:42.2 +27:33:38 10.6  0.30  80
03UY413        01:39:37.0 +27:44:36 13.7        81
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:50:46 UT

Marc W. Buie, Southwest Research Institute

RECON