RECON: TNO occultation with 574441

Event between (574441) 10OE153 and star GA0720:33275240 with event index number of 2517644

Geocentric closest approach at 2024/11/18 00:21:53 UTC

J2000 position of star is 21:01:57.7 -16:45:59
Equinox of date position of star is 21:03:17.6 -16:40:18
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 132 degrees from the moon. Moon is 94% illuminated.
Apparent brightness V=21.4

Object is 39.2 AU from the Sun and 39.4 AU from the Earth.
Apparent velocity is 11.9 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 143 seconds.
The 1-sigma cross-track error in the shadow position is 1488 km.

The object has an absolute magnitude Hv=5.3
Diameter=510.5 km assuming a 5% albedo -- 44.7 sec chord
Diameter=208.4 km assuming a 30% albedo -- 18.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 574441, (2024/11/18 00:19UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:01.1 -29:29:23  1.2 29.41 111
PPM 238231     21:02:15.6 -17:25:56  6.0  0.81 132
PPM 238249     21:02:59.2 -16:20:12  8.2  0.34 132
PPM 238246     21:02:53.9 -16:45:20  9.0  0.14 132
574441         21:03:21.2 -16:40:02 13.6       131
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 574441, (2024/11/18 00:19UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 29.41 111
PPM 238231     21:00:51.7 -17:31:51  6.0  0.81 132
PPM 238249     21:01:35.9 -16:26:08  8.2  0.34 132
PPM 238246     21:01:30.4 -16:51:16  9.0  0.14 132
574441         21:01:57.7 -16:45:59 13.6       132
Positions are for J2000

Event circumstances last updated at 2023/10/24 02:32:23 UT

Marc W. Buie, Southwest Research Institute

RECON