RECON: TNO occultation with 527328

Event between (527328) 07TK422 and star GA1120:00813536 with event index number of 2815917

Geocentric closest approach at 2029/08/10 15:47:04 UTC

J2000 position of star is 04:46:39.3 +22:40:11
Equinox of date position of star is 04:48:07.6 +22:42:44
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 73 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=23.3

Object is 25.0 AU from the Sun and 25.4 AU from the Earth.
Apparent velocity is 17.6 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 843 seconds.
The 1-sigma cross-track error in the shadow position is 5227 km.

The object has an absolute magnitude Hv=9.1
Diameter=83.2 km assuming a 5% albedo -- 5.2 sec chord
Diameter=34.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 527328, (2029/08/10 15:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:37.4 +16:34:00  0.8  6.66  76
Alnath         05:28:10.0 +28:37:47  1.6 10.72  64
PPM 093742     04:47:30.0 +23:40:48  6.1  0.98  73
PPM 093726     04:45:40.9 +22:59:51  7.0  0.69  73
PPM 093770     04:49:13.9 +22:21:18  9.0  0.41  73
PPM 093766     04:49:05.0 +22:46:41 11.3  0.16  73
527328         04:48:26.1 +22:43:15 16.4        72
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, (2029/08/10 15:47UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  6.66  76
Alnath         05:26:17.6 +28:36:23  1.6 10.72  64
PPM 093742     04:45:42.5 +23:37:41  6.1  0.98  73
PPM 093726     04:43:54.0 +22:56:40  7.0  0.69  73
PPM 093770     04:47:27.4 +22:18:16  9.0  0.41  73
PPM 093766     04:47:18.2 +22:43:38 11.3  0.16  73
527328         04:46:39.3 +22:40:11 16.4        73
Positions are for J2000

Event circumstances last updated at 2024/06/27 21:04:54 UT

Marc W. Buie, Southwest Research Institute

RECON