RECON: TNO occultation with 523768

Event between (523768) 14WQ510 and star GA0940:03688428 with event index number of 2720701

Geocentric closest approach at 2029/03/17 13:40:40 UTC

J2000 position of star is 10:40:57.1 +05:49:35
Equinox of date position of star is 10:42:12.9 +05:41:56
Stellar brightness G=10.9, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 5% illuminated.
Apparent brightness V=22.2

Object is 45.6 AU from the Sun and 44.6 AU from the Earth.
Apparent velocity is 25.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is 3549 km.

The object has an absolute magnitude Hv=5.6
Diameter=452.9 km assuming a 5% albedo -- 18.2 sec chord
Diameter=184.9 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 523768, (2029/03/17 13:35UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.6 +11:49:24  1.3 10.12 126
PPM 157166     10:47:36.8 +06:13:07  6.4  1.39 137
PPM 157038     10:40:14.3 +05:34:53  7.3  0.56 136
PPM 157072     10:42:09.3 +05:18:46  9.7  0.37 136
PPM 157071     10:42:07.5 +05:44:24 10.3  0.11 136
523768         10:42:28.2 +05:40:24 10.9       137
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 523768, (2029/03/17 13:35UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 10.12 126
PPM 157166     10:46:05.7 +06:22:23  6.4  1.39 137
PPM 157038     10:38:43.1 +05:44:03  7.3  0.56 136
PPM 157072     10:40:38.3 +05:27:58  9.7  0.37 136
PPM 157071     10:40:36.4 +05:53:36 10.3  0.11 136
523768         10:40:57.1 +05:49:35 10.9       136
Positions are for J2000

Event circumstances last updated at 2024/04/24 02:58:25 UT

Marc W. Buie, Southwest Research Institute

RECON