RECON: TNO occultation with 470309

Event between (470309) 07JK43 and star GA1100:09946782 with event index number of 2752742

Geocentric closest approach at 2029/05/08 23:33:45 UTC

J2000 position of star is 19:28:59.3 +20:37:48
Equinox of date position of star is 19:30:03.2 +20:40:55
Stellar brightness G=0.0, use SENSEUP=2 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 65 degrees from the moon. Moon is 18% illuminated.
Apparent brightness V=22.0

Object is 28.1 AU from the Sun and 27.8 AU from the Earth.
Apparent velocity is 20.8 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 85 seconds.
The 1-sigma cross-track error in the shadow position is 2438 km.

The object has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 10.1 sec chord
Diameter=85.7 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 470309, (2029/05/08 23:34UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:55.9 +38:48:43  0.0 21.33  78
Tarazed        19:47:39.3 +10:41:12  2.7 10.84  60
7 Vul          19:30:37.7 +20:20:32  6.2  0.36  64
PPM 109123     19:31:32.2 +20:41:43 10.4  0.30  64
470309         19:30:15.8 +20:41:33  0.0        64
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 470309, (2029/05/08 23:34UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:08  0.0 21.33  78
Tarazed        19:46:15.6 +10:36:48  2.7 10.84  60
7 Vul          19:29:20.9 +20:16:47  6.2  0.36  64
PPM 109123     19:30:15.6 +20:37:56 10.4  0.30  64
470309         19:28:59.3 +20:37:48  0.0        65
Positions are for J2000

Event circumstances last updated at 2024/06/26 21:35:12 UT

Marc W. Buie, Southwest Research Institute

RECON