RECON: TNO occultation with 03QZ111

Event between 03QZ111 and star GA0940:00031638 with event index number of 292864

Geocentric closest approach at 2020/10/07 13:33:40 UTC

J2000 position of star is 00:19:47.9 +04:03:50
Equinox of date position of star is 00:20:50.2 +04:10:33
Stellar brightness G=13.7, use SENSEUP=64
Star is 71 degrees from the moon. Moon is 74% illuminated.
TNO apparent brightness V=26.1

TNO is 40.6 AU from the Sun and 39.6 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 158 seconds.
The 1-sigma cross-track error in the shadow position is 2642 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=203.2 km assuming a 5% albedo -- 2.4 sec chord
Diameter=83.0 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 03QZ111, (2020/10/07 13:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.6 -29:30:42  1.2 39.01 102
Algenib        00:14:18.5 +15:17:56  2.8 11.24  68
44 Psc         00:26:28.2 +02:03:16  5.8  2.54  70
PPM 143392     00:21:25.7 +04:53:39  8.5  0.73  70
PPM 143377     00:20:24.6 +03:48:11  9.9  0.39  71
PPM 143381     00:20:49.8 +04:06:49 10.8  0.07  71
03QZ111        00:20:52.0 +04:10:45 13.7        70
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 03QZ111, (2020/10/07 13:34UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 39.01 102
Algenib        00:13:14.2 +15:11:01  2.8 11.24  68
44 Psc         00:25:24.2 +01:56:22  5.8  2.54  70
PPM 143392     00:20:21.6 +04:46:44  8.5  0.73  70
PPM 143377     00:19:20.6 +03:41:17  9.9  0.39  71
PPM 143381     00:19:45.7 +03:59:55 10.8  0.07  71
03QZ111        00:19:47.9 +04:03:50 13.7        71
Positions are for J2000

Event circumstances last updated at 2020/03/08 20:53:12 UT

Marc W. Buie, Southwest Research Institute

RECON