RECON: TNO occultation with 532027

Event between (532027) 13EH154 and star GA0700:05371120 with event index number of 2447819

Geocentric closest approach at 2027/07/18 07:38:48 UTC

J2000 position of star is 14:09:26.3 -19:37:58
Equinox of date position of star is 14:10:47.3 -19:44:49
Stellar brightness G=12.9, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 75 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.4

Object is 26.7 AU from the Sun and 26.5 AU from the Earth.
Apparent velocity is 3.7 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 525 seconds.
The 1-sigma cross-track error in the shadow position is 2238 km.

The object has an absolute magnitude Hv=7.9
Diameter=153.5 km assuming a 5% albedo -- 43.1 sec chord
Diameter=62.7 km assuming a 30% albedo -- 17.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 532027, (2027/07/18 07:42UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:38.9 -11:18:15  1.0 13.61  88
PPM 228526     14:16:55.5 -18:19:41  5.9  2.01  74
PPM 228331     14:09:32.6 -19:51:07  8.5  0.35  75
PPM 228367     14:10:44.7 -19:29:44  9.4  0.27  75
PPM 228344     14:10:01.6 -19:40:58 10.1  0.24  75
532027         14:10:58.1 -19:45:43 12.9        75
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 532027, (2027/07/18 07:42UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 13.61  88
PPM 228526     14:15:24.0 -18:12:03  5.9  2.01  74
PPM 228331     14:08:00.8 -19:43:20  8.5  0.35  75
PPM 228367     14:09:13.0 -19:21:59  9.4  0.27  75
PPM 228344     14:08:29.9 -19:33:12 10.1  0.24  75
532027         14:09:26.3 -19:37:58 12.9        75
Positions are for J2000

Event circumstances last updated at 2024/04/23 03:29:35 UT

Marc W. Buie, Southwest Research Institute

RECON