RECON: TNO occultation with 523751

Event between (523751) 14UU224 and star GA0960:00563693 with event index number of 355468

Geocentric closest approach at 2019/08/19 03:06:36 UTC

J2000 position of star is 04:57:25.7 +07:30:35
Equinox of date position of star is 04:58:28.8 +07:32:19
Stellar brightness G=13.8, use SENSEUP=64
Star is 68 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=22.2

TNO is 30.6 AU from the Sun and 30.9 AU from the Earth.
The TNO is moving 16.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is 1270 km.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 13.8 sec chord
Diameter=93.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 523751, (2019/08/19 03:07UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.0 +16:32:50  0.8 10.42  64
Bellatrix      05:26:11.1 +06:21:57  1.6  6.97  75
1Pi 3Ori       04:50:54.5 +06:59:38  3.2  1.96  66
PPM 148190     04:57:12.7 +07:56:03  6.6  0.51  68
PPM 148236     04:58:47.0 +07:20:22  9.3  0.21  68
523751         04:58:29.4 +07:32:20 13.8        68
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 523751, (2019/08/19 03:07UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 10.42  64
Bellatrix      05:25:07.8 +06:20:58  1.6  6.97  75
1Pi 3Ori       04:49:51.0 +06:57:41  3.2  1.96  66
PPM 148190     04:56:08.9 +07:54:16  6.6  0.51  68
PPM 148236     04:57:43.4 +07:18:38  9.3  0.21  68
523751         04:57:25.7 +07:30:35 13.8        68
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:33:47 UT

Marc W. Buie, Southwest Research Institute

RECON