RECON: TNO occultation with 543735

Event between (543735) 14OS394 and star GA1000:00421221 with event index number of 2251927

Geocentric closest approach at 2024/10/03 19:10:49 UTC

J2000 position of star is 04:19:09.9 +10:18:18
Equinox of date position of star is 04:20:29.1 +10:21:42
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=22.0

Object is 38.2 AU from the Sun and 37.7 AU from the Earth.
Apparent velocity is 12.9 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 152 seconds.
The 1-sigma cross-track error in the shadow position is 1773 km.

The object has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 28.3 sec chord
Diameter=146.2 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 543735, (2024/10/03 19:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.6 +16:33:26  0.8  7.42 132
Bellatrix      05:26:27.6 +06:22:12  1.6 16.79 119
PPM 147404     04:19:45.8 +09:32:44  6.2  0.84 136
PPM 119789     04:20:58.8 +10:10:45  7.0  0.22 136
PPM 119781     04:20:22.5 +10:12:43 10.3  0.16 136
543735         04:20:31.5 +10:21:48 15.6       135
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 543735, (2024/10/03 19:10UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  7.42 132
Bellatrix      05:25:07.8 +06:20:58  1.6 16.79 119
PPM 147404     04:18:24.6 +09:29:12  6.2  0.84 136
PPM 119789     04:19:37.3 +10:07:16  7.0  0.22 136
PPM 119781     04:19:01.0 +10:09:13 10.3  0.16 136
543735         04:19:09.9 +10:18:18 15.6       136
Positions are for J2000

Event circumstances last updated at 2024/01/08 05:09:11 UT

Marc W. Buie, Southwest Research Institute

RECON