RECON: TNO occultation with 95HM5

Event between 95HM5 and star UC4-371-072759 with event index number of 132427

Geocentric closest approach at 2018/07/31 12:10:18 UTC

J2000 position of star is 15:46:53.1 -15:55:09
Equinox of date position of star is 15:47:54.0 -15:58:26
Stellar brightness R=16.1, use SENSEUP=128
Star is 111 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=23.1

TNO is 29.6 AU from the Sun and 29.2 AU from the Earth.
The TNO is moving 4.1 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 1526 seconds.
The 1-sigma cross-track error in the shadow position is 2242 km.

The TNO has an absolute magnitude Hv=8.2
Diameter=136.8 km assuming a 5% albedo -- 33.6 sec chord
Diameter=55.8 km assuming a 30% albedo -- 13.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 95HM5, (2018/07/31 12:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:33.0 -26:28:18  0.9 14.43  98
8Bet1Sco       16:06:31.2 -19:51:18  2.6  5.88 105
44Eta Lib      15:45:07.3 -15:43:51  5.4  0.72 111
PPM 230725     15:47:27.2 -16:13:06  8.5  0.27 111
95HM5          15:47:56.2 -15:58:33 16.1       110
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 95HM5, (2018/07/31 12:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.43  98
8Bet1Sco       16:05:26.2 -19:48:20  2.6  5.88 105
44Eta Lib      15:44:04.4 -15:40:23  5.4  0.72 111
PPM 230725     15:46:24.0 -16:09:42  8.5  0.27 111
95HM5          15:46:53.1 -15:55:09 16.1       110
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:50:35 UT

Marc W. Buie, Southwest Research Institute

RECON