RECON: TNO occultation with 523617

Event between (523617) 07PS45 and star GA0800:00141309 with event index number of 2626788

Geocentric closest approach at 2028/11/10 22:09:16 UTC

J2000 position of star is 01:46:17.3 -09:18:34
Equinox of date position of star is 01:47:28.5 -09:11:25
Stellar brightness G=14.4, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 127 degrees from the moon. Moon is 39% illuminated.
Apparent brightness V=21.8

Object is 41.9 AU from the Sun and 41.1 AU from the Earth.
Apparent velocity is 22.1 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 223 seconds.
The 1-sigma cross-track error in the shadow position is 2001 km.

The object has an absolute magnitude Hv=5.5
Diameter=461.3 km assuming a 5% albedo -- 21.8 sec chord
Diameter=188.3 km assuming a 30% albedo -- 8.9 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 523617, (2028/11/10 22:07UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:14.2 -29:28:06  1.2 44.28 155
68Omi Cet      02:20:48.4 -02:50:52  2.0 10.37 118
53Chi Cet      01:51:00.3 -10:32:40  4.7  1.60 126
PPM 183842     01:48:32.1 -09:27:22  8.5  0.35 127
PPM 183819     01:47:16.0 -09:12:03  9.4  0.12 127
523617         01:47:43.2 -09:09:57 14.4       127
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 523617, (2028/11/10 22:07UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 44.28 155
68Omi Cet      02:19:20.8 -02:58:45  2.0 10.37 118
53Chi Cet      01:49:34.9 -10:41:13  4.7  1.60 126
PPM 183842     01:47:06.3 -09:35:58  8.5  0.35 127
PPM 183819     01:45:50.1 -09:20:40  9.4  0.12 127
523617         01:46:17.3 -09:18:34 14.4       127
Positions are for J2000

Event circumstances last updated at 2023/12/09 04:28:21 UT

Marc W. Buie, Southwest Research Institute

RECON