RECON: TNO occultation with 91205

Event between (91205) 98US43 and star UC4-535-014323 with event index number of 69167

Geocentric closest approach at 2017/08/14 19:43:53 UTC

J2000 position of star is 05:26:03.5 +16:54:26
Equinox of date position of star is 05:26:59.9 +16:55:13
Stellar brightness R=11.7
Star is 33 degrees from the moon. Moon is 53% illuminated.
TNO apparent brightness V=23.9

TNO is 37.4 AU from the Sun and 37.9 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 371 seconds.
The 1-sigma cross-track error in the shadow position is 1502 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 7.7 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 91205, (2017/08/14 19:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:07.6 +07:24:32  0.4 11.86  40
Bellatrix      05:26:04.6 +06:21:51  1.6 10.56  33
111 Tau        05:25:27.1 +17:23:54  5.5  0.62  32
PPM 120929     05:25:51.9 +17:12:43  7.7  0.41  32
PPM 120949     05:27:15.2 +16:42:46  9.5  0.21  33
91205          05:27:04.8 +16:55:17 11.7        33
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 2016/03/21 17:21:06 UT

RECON