RECON: TNO occultation with 14UH225

Event between 14UH225 and star GA1000:00249819 with event index number of 2735377

Geocentric closest approach at 2024/07/04 17:59:43 UTC

J2000 position of star is 02:37:49.8 +10:35:02
Equinox of date position of star is 02:39:00.7 +10:40:41
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 49 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=23.5

TNO is 40.0 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 18.1 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 288 seconds.
The 1-sigma cross-track error in the shadow position is 1764 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 11.3 sec chord
Diameter=83.4 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 14UH225, (2024/07/04 18:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:19.8 +16:33:24  0.8 29.27  21
Menkar         03:03:33.8 +04:11:04  2.5  8.88  47
PPM 118474     02:43:48.3 +10:50:41  6.3  1.15  48
PPM 118408     02:40:22.9 +10:44:28  7.7  0.31  49
PPM 118384     02:38:08.6 +10:38:38  9.0  0.25  49
14UH225        02:39:09.1 +10:41:21 16.9        49
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 14UH225, (2024/07/04 18:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 29.27  21
Menkar         03:02:16.8 +04:05:21  2.5  8.88  47
PPM 118474     02:42:28.9 +10:44:29  6.3  1.15  48
PPM 118408     02:39:03.5 +10:38:11  7.7  0.31  49
PPM 118384     02:36:49.3 +10:32:19  9.0  0.25  49
14UH225        02:37:49.8 +10:35:02 16.9        49
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:55:06 UT

Marc W. Buie, Southwest Research Institute

RECON