RECON: TNO occultation with 523733

Event between (523733) 14PR70 and star GA1180:02791944 with event index number of 2308884

Geocentric closest approach at 2028/09/18 06:18:35 UTC

J2000 position of star is 06:57:53.0 +29:08:51
Equinox of date position of star is 06:59:23.9 +29:06:49
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 67 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=23.8

Object is 20.3 AU from the Sun and 20.6 AU from the Earth.
Apparent velocity is 15.8 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 166 seconds.
The 1-sigma cross-track error in the shadow position is 834 km.

The object has an absolute magnitude Hv=10.4
Diameter=50.4 km assuming a 5% albedo -- 3.3 sec chord
Diameter=20.6 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523733, (2028/09/18 06:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:47:04.4 +27:57:16  1.1 10.46  56
PPM 097053     07:09:12.8 +28:07:47  6.2  2.31  64
PPM 096723     06:56:36.6 +29:47:20  8.0  0.96  67
PPM 096843     07:01:02.0 +29:13:57  9.3  0.32  66
523733         06:59:42.0 +29:06:25 15.6        66
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 523733, (2028/09/18 06:14UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 10.46  56
PPM 097053     07:07:24.8 +28:10:36  6.2  2.31  64
PPM 096723     06:54:46.9 +29:49:39  8.0  0.96  67
PPM 096843     06:59:12.9 +29:16:26  9.3  0.32  66
523733         06:57:53.0 +29:08:51 15.6        67
Positions are for J2000

Event circumstances last updated at 2023/12/18 04:50:55 UT

Marc W. Buie, Southwest Research Institute

RECON