RECON: TNO occultation with 523749

Event between (523749) 14UR224 and star GA1100:00980015 with event index number of 2372608

Geocentric closest approach at 2024/11/10 01:55:03 UTC

J2000 position of star is 05:16:01.8 +20:15:07
Equinox of date position of star is 05:17:27.2 +20:16:37
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon. Moon is 59% illuminated.
Apparent brightness V=21.6

Object is 39.4 AU from the Sun and 38.6 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 95 seconds.
The 1-sigma cross-track error in the shadow position is 1406 km.

The object has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 22.4 sec chord
Diameter=186.6 km assuming a 30% albedo -- 9.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 523749, (2024/11/10 01:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.0 +16:33:27  0.8 10.22 101
Alnath         05:27:51.9 +28:37:34  1.6  8.67 114
PPM 120839     05:21:46.4 +19:36:05  6.5  1.21 112
PPM 094230     05:18:17.8 +20:08:37  7.8  0.23 111
PPM 094217     05:17:26.2 +20:09:06  8.8  0.13 111
523749         05:17:30.3 +20:16:40 16.0       111
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 523749, (2024/11/10 01:55UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 10.22 101
Alnath         05:26:17.6 +28:36:23  1.6  8.67 114
PPM 120839     05:20:18.3 +19:34:41  6.5  1.21 112
PPM 094230     05:16:49.3 +20:07:05  7.8  0.23 111
PPM 094217     05:15:57.8 +20:07:32  8.8  0.13 111
523749         05:16:01.8 +20:15:07 16.0       111
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:49:19 UT

Marc W. Buie, Southwest Research Institute

RECON