RECON: TNO occultation with 95WY2

Event between 95WY2 and star UC4-567-036023 with event index number of 156471

Geocentric closest approach at 2018/09/14 13:03:32 UTC

J2000 position of star is 07:07:34.6 +23:14:25
Equinox of date position of star is 07:08:37.6 +23:12:43
Stellar brightness R=14.8, use SENSEUP=128
Star is 128 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=23.9

TNO is 45.1 AU from the Sun and 45.5 AU from the Earth.
The TNO is moving 16.1 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 860 seconds.
The 1-sigma cross-track error in the shadow position is 2768 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=219.8 km assuming a 5% albedo -- 13.6 sec chord
Diameter=89.7 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 95WY2, (2018/09/14 13:04UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:27.5 +27:58:46  1.1  9.75 120
44 Gem         07:06:25.9 +22:36:28  5.9  0.80 129
PPM 097045     07:08:25.2 +24:08:17  8.4  0.93 128
PPM 097066     07:08:45.8 +23:10:12  9.5  0.04 128
95WY2          07:08:42.3 +23:12:35 14.8       128
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 95WY2, (2018/09/14 13:04UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1  9.75 120
44 Gem         07:05:18.4 +22:38:15  5.9  0.80 129
PPM 097045     07:07:16.9 +24:10:06  8.4  0.93 128
PPM 097066     07:07:38.0 +23:12:02  9.5  0.04 128
95WY2          07:07:34.6 +23:14:25 14.8       128
Positions are for J2000

Event circumstances last updated at 2017/05/23 16:15:41 UT

Marc W. Buie, Southwest Research Institute

RECON