RECON: TNO occultation with 523740

Event between (523740) 14TV85 and star GA0660:06048705 with event index number of 2324466

Geocentric closest approach at 2028/05/01 02:52:32 UTC

J2000 position of star is 14:13:03.6 -22:01:46
Equinox of date position of star is 14:14:26.2 -22:08:35
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 100 degrees from the moon. Moon is 39% illuminated.
Apparent brightness V=21.4

Object is 16.1 AU from the Sun and 15.1 AU from the Earth.
Apparent velocity is 21.6 km/sec on the sky relative to the star, or, 7.1 arcsec/hr.
The 1-sigma error in the time of the event is 67 seconds.
The 1-sigma cross-track error in the shadow position is 856 km.

The object has an absolute magnitude Hv=9.4
Diameter=77.3 km assuming a 5% albedo -- 3.7 sec chord
Diameter=31.5 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523740, (2028/05/01 02:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:41.4 -11:18:30  1.0 15.78  85
5The Cen       14:08:21.9 -36:30:25  2.1 14.41 103
PPM 262433     14:05:28.3 -22:33:23  6.3  2.16  98
PPM 262652     14:15:19.4 -22:36:04  8.3  0.47 100
PPM 262654     14:15:34.0 -22:15:12  9.9  0.23 100
523740         14:14:39.2 -22:09:39 15.6       100
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 523740, (2028/05/01 02:52UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 15.78  85
5The Cen       14:06:40.0 -36:22:23  2.1 14.41 103
PPM 262433     14:03:53.1 -22:25:17  6.3  2.16  98
PPM 262652     14:13:43.6 -22:28:11  8.3  0.47 100
PPM 262654     14:13:58.3 -22:07:20  9.9  0.23 100
523740         14:13:03.6 -22:01:46 15.6       100
Positions are for J2000

Event circumstances last updated at 2024/06/23 21:33:21 UT

Marc W. Buie, Southwest Research Institute

RECON