RECON: TNO occultation with 524365

Event between (524365) 01XQ254 and star GA1020:03428317 with event index number of 2593842

Geocentric closest approach at 2024/11/05 20:01:30 UTC

J2000 position of star is 10:41:07.6 +13:56:58
Equinox of date position of star is 10:42:21.5 +13:49:41
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 17% illuminated.
Apparent brightness V=23.3

Object is 33.2 AU from the Sun and 33.5 AU from the Earth.
Apparent velocity is 17.5 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 250 seconds.
The 1-sigma cross-track error in the shadow position is 1782 km.

The object has an absolute magnitude Hv=7.9
Diameter=158.5 km assuming a 5% albedo -- 9.1 sec chord
Diameter=64.7 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 524365, (2024/11/05 20:01UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:41.6 +11:50:41  1.3  8.22 123
52 Leo         10:47:44.1 +14:03:46  5.5  1.31 115
PPM 127610     10:41:44.6 +14:49:59  8.1  1.03 117
PPM 127627     10:43:15.7 +13:37:37  8.7  0.28 116
524365         10:42:26.8 +13:49:09 16.8       116
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 524365, (2024/11/05 20:01UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  8.22 123
52 Leo         10:46:25.1 +14:11:39  5.5  1.31 115
PPM 127610     10:40:25.2 +14:57:48  8.1  1.03 117
PPM 127627     10:41:56.6 +13:45:27  8.7  0.28 116
524365         10:41:07.6 +13:56:58 16.8       116
Positions are for J2000

Event circumstances last updated at 2023/03/04 03:56:59 UT

Marc W. Buie, Southwest Research Institute

RECON