RECON: TNO occultation with 523745

Event between (523745) 14TD86 and star GA1080:03306500 with event index number of 2767511

Geocentric closest approach at 2029/05/25 02:59:06 UTC

J2000 position of star is 08:54:38.4 +19:07:49
Equinox of date position of star is 08:56:00.9 +19:02:13
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 77 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=21.8

Object is 43.4 AU from the Sun and 43.8 AU from the Earth.
Apparent velocity is 15.8 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 174 seconds.
The 1-sigma cross-track error in the shadow position is 1753 km.

The object has an absolute magnitude Hv=5.3
Diameter=517.6 km assuming a 5% albedo -- 33.6 sec chord
Diameter=211.3 km assuming a 30% albedo -- 13.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 523745, (2029/05/25 03:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:07.0 +27:57:10  1.1 18.18  95
PPM 125810     08:52:25.2 +18:43:14  6.2  0.97  78
PPM 125846     08:54:00.4 +19:14:19  8.1  0.59  77
PPM 125863     08:55:00.9 +19:12:33  8.9  0.36  77
PPM 125909     08:56:57.2 +19:14:36 10.4  0.27  77
523745         08:56:18.6 +19:01:00 15.4        76
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 523745, (2029/05/25 03:03UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 18.18  95
PPM 125810     08:50:45.0 +18:49:55  6.2  0.97  78
PPM 125846     08:52:20.0 +19:21:03  8.1  0.59  77
PPM 125863     08:53:20.5 +19:19:19  8.9  0.36  77
PPM 125909     08:55:16.9 +19:21:26 10.4  0.27  77
523745         08:54:38.4 +19:07:49 15.4        77
Positions are for J2000

Event circumstances last updated at 2024/03/08 03:33:11 UT

Marc W. Buie, Southwest Research Institute

RECON