RECON: TNO occultation with 05VZ122

Event between 05VZ122 and star GA1020:01676629 with event index number of 1956926

Geocentric closest approach at 2022/10/27 22:00:37 UTC

J2000 position of star is 06:19:49.0 +13:41:18
Equinox of date position of star is 06:21:03.5 +13:40:39
Stellar brightness G=11.8, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 149 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=22.9

TNO is 36.0 AU from the Sun and 35.5 AU from the Earth.
The TNO is moving 11.1 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 311 seconds.
The 1-sigma cross-track error in the shadow position is 3488 km.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 19.4 sec chord
Diameter=87.7 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 05VZ122, (2022/10/27 22:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.5 +07:24:34  0.4  8.72 152
Alhena         06:39:01.8 +16:22:40  1.9  5.10 146
PPM 122243     06:19:23.6 +14:22:21  6.2  0.81 150
PPM 122284     06:20:41.9 +13:45:58  8.5  0.13 150
05VZ122        06:21:06.5 +13:40:37 11.8       149
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, (2022/10/27 22:01UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  8.72 152
Alhena         06:37:42.8 +16:23:57  1.9  5.10 146
PPM 122243     06:18:05.6 +14:22:58  6.2  0.81 150
PPM 122284     06:19:24.3 +13:46:38  8.5  0.13 150
05VZ122        06:19:49.0 +13:41:18 11.8       149
Positions are for J2000

Event circumstances last updated at 2021/12/09 01:25:34 UT

Marc W. Buie, Southwest Research Institute

RECON