RECON: TNO occultation with 511130

Event between (511130) 13WV107 and star GA0620:06149867 with event index number of 2262743

Geocentric closest approach at 2026/07/03 07:35:31 UTC

J2000 position of star is 12:10:18.2 -26:49:31
Equinox of date position of star is 12:11:34.2 -26:57:41
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 121 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=21.2

Object is 12.1 AU from the Sun and 12.0 AU from the Earth.
Apparent velocity is 14.5 km/sec on the sky relative to the star, or, 6.0 arcsec/hr.
The 1-sigma error in the time of the event is 64 seconds.
The 1-sigma cross-track error in the shadow position is 795 km.

The object has an absolute magnitude Hv=10.0
Diameter=60.3 km assuming a 5% albedo -- 4.2 sec chord
Diameter=24.6 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 511130, (2026/07/03 07:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:35.6 -11:17:56  1.0 23.58 114
9Bet Crv       12:35:47.1 -23:32:35  2.6  6.44 119
1Alp Crv       12:09:47.1 -24:52:36  4.2  2.14 123
PPM 259976     12:12:55.9 -27:13:05  7.6  0.37 120
PPM 259954     12:11:44.2 -27:04:51  9.1  0.11 121
511130         12:11:40.5 -26:58:21 15.8       121
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 511130, (2026/07/03 07:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 23.58 114
9Bet Crv       12:34:23.2 -23:23:50  2.6  6.44 119
1Alp Crv       12:08:25.0 -24:43:45  4.2  2.14 123
PPM 259976     12:11:33.4 -27:04:15  7.6  0.37 120
PPM 259954     12:10:21.8 -26:56:00  9.1  0.11 121
511130         12:10:18.2 -26:49:31 15.8       121
Positions are for J2000

Event circumstances last updated at 2024/06/19 21:29:58 UT

Marc W. Buie, Southwest Research Institute

RECON