RECON: TNO occultation with 03FH129

Event between 03FH129 and star GA0900:03947213 with event index number of 231438

Geocentric closest approach at 2019/12/18 20:56:41 UTC

J2000 position of star is 13:08:23.4 +00:42:31
Equinox of date position of star is 13:09:20.0 +00:36:38
Stellar brightness G=15.3, use SENSEUP=128
Star is 23 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=24.8

TNO is 43.1 AU from the Sun and 43.5 AU from the Earth.
The TNO is moving 15.0 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 1066 seconds.
The 1-sigma cross-track error in the shadow position is 2831 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=130.6 km assuming a 5% albedo -- 8.7 sec chord
Diameter=53.3 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 03FH129, (2019/12/18 20:57UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:14.9 -11:15:54  1.0 12.58  32
Vindemiatrix   13:03:10.3 +10:51:08  2.8 10.37  21
PPM 159692     13:22:42.6 +01:58:58  5.7  3.60  26
PPM 159493     13:08:37.9 +01:22:05  7.4  0.79  23
PPM 159528     13:10:33.4 +00:38:16  9.6  0.29  23
03FH129        13:09:24.7 +00:36:09 15.3        24
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 03FH129, (2019/12/18 20:57UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 12.58  32
Vindemiatrix   13:02:10.3 +10:57:33  2.8 10.37  21
PPM 159692     13:21:41.5 +02:05:13  5.7  3.60  26
PPM 159493     13:07:36.7 +01:28:27  7.4  0.79  23
PPM 159528     13:09:32.1 +00:44:37  9.6  0.29  23
03FH129        13:08:23.4 +00:42:31 15.3        23
Positions are for J2000

Event circumstances last updated at 2018/06/12 07:54:55 UT

Marc W. Buie, Southwest Research Institute

RECON