RECON: TNO occultation with 527328

Event between (527328) 07TK422 and star GA1080:00415309 with event index number of 2136334

Geocentric closest approach at 2024/12/10 23:35:34 UTC

J2000 position of star is 03:42:50.1 +19:19:44
Equinox of date position of star is 03:44:14.8 +19:24:19
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon. Moon is 76% illuminated.
Apparent brightness V=23.0

Object is 24.6 AU from the Sun and 23.6 AU from the Earth.
Apparent velocity is 22.6 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 265 seconds.
The 1-sigma cross-track error in the shadow position is 2671 km.

The object has an absolute magnitude Hv=9.1
Diameter=83.2 km assuming a 5% albedo -- 4.1 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 527328, (2024/12/10 23:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.3 +16:33:27  0.8 12.93  50
44Zet Per      03:55:42.4 +31:57:20  2.8 12.81  44
13 Tau         03:43:45.5 +19:46:42  5.7  0.39  38
PPM 119282     03:42:52.8 +19:28:01  8.3  0.33  37
527328         03:44:16.5 +19:24:24 15.4        38
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 527328, (2024/12/10 23:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 12.93  50
44Zet Per      03:54:07.9 +31:53:01  2.8 12.81  44
13 Tau         03:42:18.9 +19:42:01  5.7  0.39  38
PPM 119282     03:41:26.4 +19:23:19  8.3  0.33  37
527328         03:42:50.1 +19:19:44 15.4        38
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:41:02 UT

Marc W. Buie, Southwest Research Institute

RECON