RECON: TNO occultation with 420356

Event between (420356) Praamzius and star GA1020:03360188 with event index number of 2376924

Geocentric closest approach at 2024/11/03 05:55:25 UTC

J2000 position of star is 09:52:25.6 +12:41:33
Equinox of date position of star is 09:53:44.6 +12:34:37
Stellar brightness G=10.4, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 94 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=22.3

Object is 43.0 AU from the Sun and 43.3 AU from the Earth.
Apparent velocity is 11.8 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 557 seconds.
The 1-sigma cross-track error in the shadow position is 3375 km.

The object has an absolute magnitude Hv=5.8
Diameter=426.6 km assuming a 5% albedo -- 36.0 sec chord
Diameter=174.2 km assuming a 30% albedo -- 14.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 420356, (2024/11/03 05:55UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:41.6 +11:50:41  1.3  3.96  90
PPM 126849     09:52:09.3 +11:43:30  6.5  0.94  94
23 Leo         09:52:22.5 +12:56:56  7.8  0.50  95
PPM 126861     09:52:53.6 +12:32:11  9.8  0.22  95
420356         09:53:45.9 +12:34:30 10.4        94
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 420356, (2024/11/03 05:55UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3  3.96  90
PPM 126849     09:50:49.2 +11:50:32  6.5  0.94  94
23 Leo         09:51:02.0 +13:03:58  7.8  0.50  95
PPM 126861     09:51:33.3 +12:39:14  9.8  0.22  95
420356         09:52:25.6 +12:41:33 10.4        94
Positions are for J2000

Event circumstances last updated at 2024/06/11 03:51:33 UT

Marc W. Buie, Southwest Research Institute

RECON