RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star GA1020:02547666 with event index number of 2279152

Geocentric closest approach at 2025/01/05 13:48:53 UTC

J2000 position of star is 07:02:44.0 +13:55:10
Equinox of date position of star is 07:04:06.9 +13:52:56
Stellar brightness G=14.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 108 degrees from the moon. Moon is 34% illuminated.
Apparent brightness V=20.7

Object is 22.1 AU from the Sun and 21.2 AU from the Earth.
Apparent velocity is 23.6 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 397 seconds.
The 1-sigma cross-track error in the shadow position is 3477 km.

The object has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 8.9 sec chord
Diameter=85.3 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 463368, (2025/01/05 13:49UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.7 +27:57:49  1.1 17.23 116
Alhena         06:39:09.4 +16:22:33  1.9  6.53 102
PPM 123373     07:01:44.0 +15:29:54  6.4  1.72 107
PPM 123430     07:04:03.1 +13:44:42  8.4  0.14 108
463368         07:04:08.9 +13:52:53 14.4       109
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 463368, (2025/01/05 13:49UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 17.23 116
Alhena         06:37:42.8 +16:23:57  1.9  6.53 102
PPM 123373     07:00:18.1 +15:32:06  6.4  1.72 107
PPM 123430     07:02:38.3 +13:46:58  8.4  0.14 108
463368         07:02:44.0 +13:55:10 14.4       108
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:41:54 UT

Marc W. Buie, Southwest Research Institute

RECON