RECON: TNO occultation with 13NU33

Event between 13NU33 and star GA0800:21692511 with event index number of 1562125

Geocentric closest approach at 2020/10/24 12:57:21 UTC

J2000 position of star is 22:04:46.8 -09:52:10
Equinox of date position of star is 22:05:51.1 -09:46:15
Stellar brightness G=13.6, use SENSEUP=64
Star is 18 degrees from the moon. Moon is 60% illuminated.
TNO apparent brightness V=25.4

TNO is 33.4 AU from the Sun and 32.9 AU from the Earth.
The TNO is moving 8.2 km/sec on the sky relative to the star, or, 1.2 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 1929 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=202.3 km assuming a 5% albedo -- 7.4 sec chord
Diameter=82.6 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 7:2EEEEE
 
 
 
 
 
 
 
 

Star training set for 13NU33, (2020/10/24 12:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.8 -29:30:41  1.2 23.30  26
PPM 206180     22:17:58.4 -08:56:08  5.8  3.10  20
PPM 205883     22:02:56.8 -09:46:25  8.5  0.72  17
PPM 239756     22:05:40.4 -09:54:53  9.5  0.16  17
13NU33         22:05:53.1 -09:46:04 13.6        18
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 13NU33, (2020/10/24 12:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 23.30  26
PPM 206180     22:16:52.5 -09:02:24  5.8  3.10  20
PPM 205883     22:01:50.5 -09:52:29  8.5  0.72  17
PPM 239756     22:04:34.0 -10:00:59  9.5  0.16  17
13NU33         22:04:46.8 -09:52:10 13.6        18
Positions are for J2000

Event circumstances last updated at 2020/03/10 22:15:51 UT

Marc W. Buie, Southwest Research Institute

RECON