RECON: TNO occultation with 14UM229

Event between 14UM229 and star GA1060:00270674 with event index number of 2736702

Geocentric closest approach at 2023/07/08 07:44:02 UTC

J2000 position of star is 02:34:34.6 +16:58:30
Equinox of date position of star is 02:35:47.7 +17:04:12
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 49 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=24.4

TNO is 37.9 AU from the Sun and 38.4 AU from the Earth.
The TNO is moving 18.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 255 seconds.
The 1-sigma cross-track error in the shadow position is 3015 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=124.7 km assuming a 5% albedo -- 6.9 sec chord
Diameter=50.9 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 
 
 

Star training set for 14UM229, (2023/07/08 07:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:16.4 +16:33:17  0.8 29.03  76
Hamal          02:08:30.3 +23:34:21  2.0  9.13  46
27 Ari         02:32:12.9 +17:48:24  6.2  1.14  48
PPM 118362     02:36:59.1 +16:42:52  8.9  0.45  49
PPM 118339     02:35:16.8 +17:06:28 11.0  0.15  49
14UM229        02:35:53.0 +17:04:37 14.1        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 14UM229, (2023/07/08 07:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 29.03  76
Hamal          02:07:10.7 +23:27:41  2.0  9.13  46
27 Ari         02:30:54.4 +17:42:12  6.2  1.14  48
PPM 118362     02:35:40.8 +16:36:47  8.9  0.45  49
PPM 118339     02:33:58.5 +17:00:20 11.0  0.15  49
14UM229        02:34:34.6 +16:58:30 14.1        49
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:26:44 UT

Marc W. Buie, Southwest Research Institute

RECON