RECON: TNO occultation with 528219

Event between (528219) 08KV42 and star GA1600:02123435 with event index number of 2442745

Geocentric closest approach at 2027/03/10 01:02:43 UTC

J2000 position of star is 15:50:41.0 +71:18:37
Equinox of date position of star is 15:50:34.8 +71:14:14
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 95 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=22.5

Object is 22.7 AU from the Sun and 22.4 AU from the Earth.
Apparent velocity is 37.3 km/sec on the sky relative to the star, or, 8.2 arcsec/hr.
The 1-sigma error in the time of the event is 246 seconds.
The 1-sigma cross-track error in the shadow position is 3901 km.

The object has an absolute magnitude Hv=8.7
Diameter=104.7 km assuming a 5% albedo -- 3.0 sec chord
Diameter=42.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 528219, (2027/03/10 01:03UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:51.5 +38:48:36  0.0 38.72  83
Kochab         14:50:39.4 +74:02:40  2.1  5.26  96
13Gam UMi      15:20:42.4 +71:44:14  3.0  2.42  96
PPM 009062     15:58:14.1 +70:49:10  8.1  0.75  95
PPM 009028     15:51:34.3 +71:16:07  9.1  0.09  95
528219         15:50:34.1 +71:13:45 16.1        95
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 528219, (2027/03/10 01:03UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 38.72  83
Kochab         14:50:42.2 +74:09:20  2.1  5.26  96
13Gam UMi      15:20:43.6 +71:50:03  3.0  2.42  96
PPM 009062     15:58:20.8 +70:53:46  8.1  0.75  95
PPM 009028     15:51:41.6 +71:20:57  9.1  0.09  95
528219         15:50:41.0 +71:18:37 16.1        95
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:16 UT

Marc W. Buie, Southwest Research Institute

RECON