RECON: TNO occultation with 10PU75

Event between 10PU75 and star UC4-333-220821 with event index number of 164858

Geocentric closest approach at 2018/11/28 16:00:43 UTC

J2000 position of star is 21:17:48.0 -23:34:42
Equinox of date position of star is 21:18:48.0 -23:30:17
Stellar brightness R=15.2, use SENSEUP=128
Star is 173 degrees from the moon. Moon is 65% illuminated.
TNO apparent brightness V=21.6

TNO is 36.6 AU from the Sun and 36.9 AU from the Earth.
The TNO is moving 17.7 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 699 seconds.
The 1-sigma cross-track error in the shadow position is 5512 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=413.1 km assuming a 5% albedo -- 23.3 sec chord
Diameter=168.6 km assuming a 30% albedo -- 9.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 10PU75, (2018/11/28 16:01UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:41.5 -29:31:18  1.2 23.07 156
PPM 272410     21:24:05.4 -22:35:14  5.4  1.50 174
PPM 272247     21:15:38.1 -22:47:56  8.5  1.02 173
PPM 272287     21:17:39.1 -23:29:36  9.3  0.28 173
10PU75         21:18:53.2 -23:29:54 15.2       173
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 10PU75, (2018/11/28 16:01UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 23.07 156
PPM 272410     21:23:00.6 -22:40:08  5.4  1.50 174
PPM 272247     21:14:33.0 -22:52:41  8.5  1.02 173
PPM 272287     21:16:33.7 -23:34:23  9.3  0.28 173
10PU75         21:17:48.0 -23:34:42 15.2       173
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:07:14 UT

Marc W. Buie, Southwest Research Institute

RECON