RECON: TNO occultation with 05VZ122

Event between 05VZ122 and star UC4-527-015402 with event index number of 56256

Geocentric closest approach at 2017/08/26 06:51:56 UTC

J2000 position of star is 05:42:31.2 +15:15:11
Equinox of date position of star is 05:43:26.9 +15:15:35
Stellar brightness R=15.3
Star is 124 degrees from the moon. Moon is 22% illuminated.
TNO apparent brightness V=23.0

TNO is 35.3 AU from the Sun and 35.7 AU from the Earth.
The TNO is moving 16.9 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1553 seconds.
The 1-sigma cross-track error in the shadow position is 2988 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=205.1 km assuming a 5% albedo -- 12.1 sec chord
Diameter=83.7 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 05VZ122, (2017/08/26 06:52UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:07.7 +07:24:32  0.4  8.44 120
Bellatrix      05:26:04.7 +06:21:51  1.6  9.87 128
126 Tau        05:42:18.9 +16:32:30  4.6  1.31 124
PPM 121301     05:43:41.0 +15:01:58  8.2  0.23 123
PPM 121305     05:43:49.7 +15:12:59 10.0  0.08 123
05VZ122        05:43:31.9 +15:15:38 15.3       123
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.

Event circumstances last updated at 2016/03/14 18:00:44 UT

RECON