RECON: TNO occultation with 05VZ122

Event between 05VZ122 and star GA1020:01697928 with event index number of 1957062

Geocentric closest approach at 2024/01/13 21:10:20 UTC

J2000 position of star is 06:20:47.7 +13:17:00
Equinox of date position of star is 06:22:02.2 +13:16:19
Stellar brightness G=14.3, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 127 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=22.9

TNO is 36.2 AU from the Sun and 35.2 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 212 seconds.
The 1-sigma cross-track error in the shadow position is 1782 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=214.8 km assuming a 5% albedo -- 8.9 sec chord
Diameter=87.7 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 8:5EEE
 
 
 
 
 
 
 
 

Star training set for 05VZ122, (2024/01/13 21:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.4 +07:24:34  0.4  8.61 120
Alhena         06:39:06.0 +16:22:36  1.9  5.14 132
PPM 122364     06:23:57.4 +12:33:23  6.4  0.84 128
PPM 122282     06:20:43.3 +12:58:42  7.9  0.45 127
PPM 122309     06:21:48.5 +13:05:33  8.9  0.20 127
05VZ122        06:22:09.2 +13:16:15 14.3       128
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 05VZ122, (2024/01/13 21:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  8.61 120
Alhena         06:37:42.8 +16:23:57  1.9  5.14 132
PPM 122364     06:22:36.3 +12:34:12  6.4  0.84 128
PPM 122282     06:19:22.0 +12:59:24  7.9  0.45 127
PPM 122309     06:20:27.1 +13:06:17  8.9  0.20 127
05VZ122        06:20:47.7 +13:17:00 14.3       127
Positions are for J2000

Event circumstances last updated at 2021/12/20 00:11:18 UT

Marc W. Buie, Southwest Research Institute

RECON