RECON: TNO occultation with 02WL21

Event between 02WL21 and star UC4-573-029073 with event index number of 180014

Geocentric closest approach at 2019/03/04 17:28:09 UTC

J2000 position of star is 06:26:01.7 +24:34:07
Equinox of date position of star is 06:27:07.7 +24:33:25
Stellar brightness R=14.9, use SENSEUP=128
Star is 133 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=24.3

TNO is 42.0 AU from the Sun and 41.7 AU from the Earth.
The TNO is moving 7.2 km/sec on the sky relative to the star, or, 0.9 arcsec/hr.
The 1-sigma error in the time of the event is 1974 seconds.
The 1-sigma cross-track error in the shadow position is 3588 km.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 21.5 sec chord
Diameter=63.2 km assuming a 30% albedo -- 8.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 02WL21, (2019/03/04 17:28UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:29.2 +27:58:42  1.1 18.08 150
Alhena         06:38:49.2 +16:22:53  1.9  8.61 136
PPM 095919     06:25:54.6 +25:02:13  6.3  0.56 133
PPM 095926     06:26:11.4 +24:17:24  8.5  0.35 133
PPM 095966     06:27:27.9 +24:42:13  9.4  0.16 133
02WL21         06:27:12.3 +24:33:22 14.9       133
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 02WL21, (2019/03/04 17:28UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 18.08 150
Alhena         06:37:42.8 +16:23:57  1.9  8.61 136
PPM 095919     06:24:43.7 +25:02:55  6.3  0.56 133
PPM 095926     06:25:00.9 +24:18:07  8.5  0.35 133
PPM 095966     06:26:17.3 +24:42:58  9.4  0.16 133
02WL21         06:26:01.7 +24:34:07 14.9       133
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:16:41 UT

Marc W. Buie, Southwest Research Institute

RECON