RECON: TNO occultation with 523751

Event between (523751) 14UU224 and star GA0980:01558725 with event index number of 2743576

Geocentric closest approach at 2029/04/10 19:11:33 UTC

J2000 position of star is 06:13:51.6 +08:59:39
Equinox of date position of star is 06:15:10.5 +08:59:09
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 9% illuminated.
Apparent brightness V=22.2

Object is 31.0 AU from the Sun and 31.3 AU from the Earth.
Apparent velocity is 16.1 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 130 seconds.
The 1-sigma cross-track error in the shadow position is 1510 km.

The object has an absolute magnitude Hv=7.1
Diameter=228.0 km assuming a 5% albedo -- 14.3 sec chord
Diameter=93.1 km assuming a 30% albedo -- 5.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 523751, (2029/04/10 19:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:45.4 +07:24:36  0.4  4.89 102
Alhena         06:39:24.1 +16:22:18  1.9  9.41 112
75 Ori         06:18:43.5 +09:55:45  5.4  1.24 107
PPM 150118     06:15:18.2 +08:42:07  8.1  0.28 107
PPM 150085     06:14:26.7 +09:05:19 10.4  0.27 106
523751         06:15:27.8 +08:59:02 16.9       107
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, (2029/04/10 19:22UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.89 102
Alhena         06:37:42.8 +16:23:56  1.9  9.41 112
75 Ori         06:17:06.6 +09:56:31  5.4  1.24 107
PPM 150118     06:13:42.2 +08:42:44  8.1  0.28 107
PPM 150085     06:12:50.4 +09:05:54 10.4  0.27 106
523751         06:13:51.6 +08:59:39 16.9       107
Positions are for J2000

Event circumstances last updated at 2024/01/09 22:30:53 UT

Marc W. Buie, Southwest Research Institute

RECON