RECON: TNO occultation with 14WY535

Event between 14WY535 and star GA0840:03682733 with event index number of 2560936

Geocentric closest approach at 2023/05/17 02:19:22 UTC

J2000 position of star is 08:55:36.0 -04:11:20
Equinox of date position of star is 08:56:45.4 -04:16:42
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 112 degrees from the moon. Moon is 7% illuminated.
Apparent brightness V=21.9

Object is 35.7 AU from the Sun and 35.8 AU from the Earth.
Apparent velocity is 15.2 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is 1450 km.

The object has an absolute magnitude Hv=6.2
Diameter=338.9 km assuming a 5% albedo -- 22.7 sec chord
Diameter=138.3 km assuming a 30% albedo -- 9.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14WY535, (2023/05/17 02:21UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:36.9 +11:51:07  1.3 24.25 126
Alphard        09:28:44.2 -08:45:40  2.0  9.12 120
PPM 191823     08:55:27.1 -05:31:28  6.4  1.29 111
PPM 191836     08:56:08.8 -03:38:45  7.4  0.65 111
PPM 191844     08:56:40.6 -04:09:35  9.2  0.12 111
14WY535        08:56:46.2 -04:16:46 16.3       112
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 14WY535, (2023/05/17 02:21UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 24.25 126
Alphard        09:27:35.2 -08:39:30  2.0  9.12 120
PPM 191823     08:54:17.4 -05:26:04  6.4  1.29 111
PPM 191836     08:54:58.4 -03:33:20  7.4  0.65 111
PPM 191844     08:55:30.3 -04:04:10  9.2  0.12 111
14WY535        08:55:36.0 -04:11:20 16.3       111
Positions are for J2000

Event circumstances last updated at 2023/02/10 03:59:08 UT

Marc W. Buie, Southwest Research Institute

RECON