RECON: TNO occultation with 98WX24

Event between 98WX24 and star GA1120:01183848 with event index number of 1222181

Geocentric closest approach at 2022/11/04 17:48:45 UTC

J2000 position of star is 05:27:08.2 +23:33:32
Equinox of date position of star is 05:28:31.3 +23:34:36
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 86 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=23.3

TNO is 44.9 AU from the Sun and 44.2 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 680 seconds.
The 1-sigma cross-track error in the shadow position is 2004 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=281.8 km assuming a 5% albedo -- 15.0 sec chord
Diameter=115.1 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 98WX24, (2022/11/04 17:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:14.0 +16:33:12  0.8 13.93  73
Alnath         05:27:44.3 +28:37:29  1.6  5.05  86
114 Tau        05:29:00.5 +21:57:16  4.7  1.63  85
PPM 094385     05:29:18.6 +23:18:37  8.4  0.32  86
98WX24         05:28:31.7 +23:34:36 16.5        86
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 98WX24, (2022/11/04 17:49UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 13.93  73
Alnath         05:26:17.5 +28:36:23  1.6  5.05  86
114 Tau        05:27:38.1 +21:56:13  4.7  1.63  85
PPM 094385     05:27:55.4 +23:17:34  8.4  0.32  86
98WX24         05:27:08.2 +23:33:32 16.5        86
Positions are for J2000

Event circumstances last updated at 2022/10/03 04:12:20 UT

Marc W. Buie, Southwest Research Institute

RECON