RECON: TNO occultation with 532037

Event between (532037) 13FY27 and star GA0820:04051286 with event index number of 2160263

Geocentric closest approach at 2026/04/07 01:04:30 UTC

J2000 position of star is 10:57:29.8 -06:14:35
Equinox of date position of star is 10:58:43.6 -06:22:25
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 84 degrees from the moon. Moon is 78% illuminated.
Apparent brightness V=22.1

Object is 79.2 AU from the Sun and 78.4 AU from the Earth.
Apparent velocity is 24.4 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 203 seconds.
The 1-sigma cross-track error in the shadow position is 4284 km.

The object has an absolute magnitude Hv=3.1
Diameter=1406.1 km assuming a 5% albedo -- 58.9 sec chord
Diameter=574.0 km assuming a 30% albedo -- 24.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 532037, (2026/04/07 01:05UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:46.1 +11:50:16  1.3 21.93 103
PPM 193861     10:52:25.5 -03:13:57  5.8  3.53  87
PPM 193940     10:57:03.1 -05:41:34  8.4  0.82  84
PPM 193958     10:58:27.3 -06:24:51  9.5  0.10  84
532037         10:58:49.5 -06:23:02 16.4        83
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 532037, (2026/04/07 01:05UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 21.93 103
PPM 193861     10:51:05.3 -03:05:34  5.8  3.53  87
PPM 193940     10:55:43.2 -05:33:07  8.4  0.82  84
PPM 193958     10:57:07.6 -06:16:24  9.5  0.10  84
532037         10:57:29.8 -06:14:35 16.4        84
Positions are for J2000

Event circumstances last updated at 2024/04/23 03:24:12 UT

Marc W. Buie, Southwest Research Institute

RECON