RECON: TNO occultation with 13JU63

Event between 13JU63 and star GA0660:06847459 with event index number of 1101915

Geocentric closest approach at 2021/04/14 15:05:48 UTC

J2000 position of star is 15:56:47.8 -23:09:34
Equinox of date position of star is 15:58:02.8 -23:13:08
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=23.0

TNO is 36.2 AU from the Sun and 35.4 AU from the Earth.
The TNO is moving 17.8 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 1003 seconds.
The 1-sigma cross-track error in the shadow position is 3140 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 11.8 sec chord
Diameter=85.7 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 13JU63, (2021/04/14 15:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.0 -26:28:39  0.9  8.09 162
7Del Sco       16:01:35.7 -22:40:50  2.3  0.98 169
PPM 264830     15:55:12.1 -24:02:24  5.4  1.05 170
PPM 264901     15:58:03.8 -23:14:40  8.1  0.02 170
13JU63         15:58:03.8 -23:13:11 16.2       169
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 13JU63, (2021/04/14 15:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.09 162
7Del Sco       16:00:20.0 -22:37:18  2.3  0.98 169
PPM 264830     15:53:55.9 -23:58:42  5.4  1.05 170
PPM 264901     15:56:47.9 -23:11:03  8.1  0.02 170
13JU63         15:56:47.8 -23:09:34 16.2       170
Positions are for J2000

Event circumstances last updated at 2021/01/02 19:32:13 UT

Marc W. Buie, Southwest Research Institute

RECON