RECON: TNO occultation with 07PS45

Event between 07PS45 and star UC4-385-000903 with event index number of 83905

Geocentric closest approach at 2017/09/30 14:45:13 UTC

J2000 position of star is 00:45:08.2 -13:03:09
Equinox of date position of star is 00:45:58.5 -12:57:41
Stellar brightness R=15.9
Star is 62 degrees from the moon. Moon is 73% illuminated.
TNO apparent brightness V=21.6

TNO is 40.3 AU from the Sun and 39.3 AU from the Earth.
The TNO is moving 24.8 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 494 seconds.
The 1-sigma cross-track error in the shadow position is 3597 km.

The TNO has an absolute magnitude Hv=5.5
Diameter=472.1 km assuming a 5% albedo -- 18.5 sec chord
Diameter=192.7 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 07PS45, (2017/09/30 14:45UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:37.6 -29:31:40  1.2 29.88  36
Diphda         00:44:28.8 -17:53:22  2.0  4.95  61
PPM 209218     00:44:43.7 -11:54:57  6.1  1.09  62
18 Cet         00:46:22.2 -12:47:06  6.6  0.19  62
PPM 209249     00:46:17.8 -13:07:10  9.3  0.18  62
07PS45         00:46:01.7 -12:57:20 15.9        62
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 07PS45, (2017/09/30 14:45UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 29.88  36
Diphda         00:43:35.6 -17:59:11  2.0  4.95  61
PPM 209218     00:43:50.1 -12:00:46  6.1  1.09  62
18 Cet         00:45:28.7 -12:52:54  6.6  0.19  62
PPM 209249     00:45:24.3 -13:12:59  9.3  0.18  62
07PS45         00:45:08.2 -13:03:09 15.9        62
Positions are for J2000

Event circumstances last updated at 2016/09/02 18:15:30 UT

Marc W. Buie, Southwest Research Institute

RECON