RECON: TNO occultation with 523719

Event between (523719) 14LM28 and star GA1200:04097641 with event index number of 306943

Geocentric closest approach at 2020/02/17 17:58:09 UTC

J2000 position of star is 17:29:29.2 +30:24:46
Equinox of date position of star is 17:30:14.7 +30:23:54
Stellar brightness G=14.1, use SENSEUP=64
Star is 52 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=22.6

TNO is 17.1 AU from the Sun and 17.3 AU from the Earth.
The TNO is moving 34.9 km/sec on the sky relative to the star, or, 10.0 arcsec/hr.
The 1-sigma error in the time of the event is 42 seconds.
The 1-sigma cross-track error in the shadow position is 1047 km.

The TNO has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 1.8 sec chord
Diameter=25.8 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523719, (2020/02/17 17:58UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:37.2 +38:48:12  0.0 16.17  63
27Bet Her      16:31:05.2 +21:26:49  2.8 16.01  45
PPM 080391     17:37:22.7 +30:46:26  6.0  1.58  53
PPM 080267     17:29:07.7 +30:13:47  8.1  0.30  52
PPM 080293     17:30:45.6 +30:15:06  9.9  0.18  52
523719         17:30:15.5 +30:23:53 14.1        52
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 523719, (2020/02/17 17:58UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 16.17  63
27Bet Her      16:30:13.1 +21:29:22  2.8 16.01  45
PPM 080391     17:36:36.8 +30:47:07  6.0  1.58  53
PPM 080267     17:28:21.3 +30:14:42  8.1  0.30  52
PPM 080293     17:29:59.2 +30:15:59  9.9  0.18  52
523719         17:29:29.2 +30:24:46 14.1        52
Positions are for J2000

Event circumstances last updated at 2019/10/15 22:10:04 UT

Marc W. Buie, Southwest Research Institute

RECON