RECON: TNO occultation with 560414

Event between (560414) 15FQ345 and star GA0840:04550139 with event index number of 2348164

Geocentric closest approach at 2023/06/22 03:28:29 UTC

J2000 position of star is 15:04:14.9 -04:27:49
Equinox of date position of star is 15:05:28.6 -04:33:14
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 89 degrees from the moon. Moon is 14% illuminated.
Apparent brightness V=22.2

Object is 32.9 AU from the Sun and 32.1 AU from the Earth.
Apparent velocity is 15.0 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 141 seconds.
The 1-sigma cross-track error in the shadow position is 1240 km.

The object has an absolute magnitude Hv=6.9
Diameter=244.4 km assuming a 5% albedo -- 16.5 sec chord
Diameter=99.8 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 560414, (2023/06/22 03:28UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:26.0 -11:16:59  1.0 25.41  70
27Bet Lib      15:18:16.4 -09:28:05  2.6  5.85  94
16 Lib         14:58:24.7 -04:26:26  4.4  1.77  88
PPM 198267     15:09:19.4 -03:50:44  7.8  1.19  90
PPM 198213     15:06:11.7 -04:33:25  9.5  0.18  89
560414         15:05:28.9 -04:33:15 17.0        90
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 560414, (2023/06/22 03:28UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 25.41  70
27Bet Lib      15:17:00.3 -09:22:59  2.6  5.85  94
16 Lib         14:57:10.8 -04:20:51  4.4  1.77  88
PPM 198267     15:08:05.7 -03:45:24  7.8  1.19  90
PPM 198213     15:04:57.7 -04:28:01  9.5  0.18  89
560414         15:04:14.9 -04:27:49 17.0        89
Positions are for J2000

Event circumstances last updated at 2023/05/28 03:39:35 UT

Marc W. Buie, Southwest Research Institute

RECON