RECON: TNO occultation with 133067

Event between (133067) 03FB128 and star GA0740:05985837 with event index number of 1382886

Geocentric closest approach at 2024/09/22 20:44:41 UTC

J2000 position of star is 16:22:51.8 -15:59:07
Equinox of date position of star is 16:24:15.5 -16:02:27
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 71% illuminated.
Apparent brightness V=23.1

Object is 37.6 AU from the Sun and 38.0 AU from the Earth.
Apparent velocity is 17.1 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 156 seconds.
The 1-sigma cross-track error in the shadow position is 1461 km.

The object has an absolute magnitude Hv=7.2
Diameter=251.2 km assuming a 5% albedo -- 12.7 sec chord
Diameter=102.6 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 133067, (2024/09/22 20:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:55.7 -26:29:05  0.9 10.56 176
8Bet1Sco       16:06:52.7 -19:52:16  2.6  5.64 174
PPM 231511     16:20:24.4 -14:55:52  5.8  1.45 169
PPM 231620     16:24:18.9 -17:04:31  7.3  1.03 171
PPM 231623     16:24:29.7 -15:51:36  9.5  0.19 170
133067         16:24:16.5 -16:02:29 15.6       170
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 133067, (2024/09/22 20:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.56 176
8Bet1Sco       16:05:26.2 -19:48:20  2.6  5.64 174
PPM 231511     16:19:00.4 -14:52:22  5.8  1.45 169
PPM 231620     16:22:53.6 -17:01:09  7.3  1.03 171
PPM 231623     16:23:05.1 -15:48:14  9.5  0.19 170
133067         16:22:51.8 -15:59:07 15.6       170
Positions are for J2000

Event circumstances last updated at 2024/06/09 02:45:16 UT

Marc W. Buie, Southwest Research Institute

RECON