RECON: TNO occultation with 87269

Event between (87269) 00OO67 and star GA0940:00556187 with event index number of 1777338

Geocentric closest approach at 2027/03/21 00:40:10 UTC

J2000 position of star is 04:59:36.2 +04:13:10
Equinox of date position of star is 05:00:53.8 +04:15:16
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 87 degrees from the moon. Moon is 97% illuminated.
Apparent brightness V=24.7

Object is 34.8 AU from the Sun and 35.0 AU from the Earth.
Apparent velocity is 16.4 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 343 seconds.
The 1-sigma cross-track error in the shadow position is 4765 km.

The object has an absolute magnitude Hv=9.1
Diameter=87.1 km assuming a 5% albedo -- 5.6 sec chord
Diameter=35.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURS
 
 
 
 
 
 
 
 

Star training set for 87269, (2027/03/21 00:40UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:50.8 -08:10:20  0.1 12.97  84
Bellatrix      05:26:35.5 +06:22:19  1.6  6.70  80
PPM 148183     04:57:25.3 +05:26:24  6.3  1.49  88
PPM 148301     05:02:13.9 +04:36:20  7.7  0.46  87
PPM 148281     05:01:21.9 +04:31:40  9.2  0.28  87
87269          05:01:02.5 +04:15:30 16.4        86
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 87269, (2027/03/21 00:40UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 12.97  84
Bellatrix      05:25:07.8 +06:20:58  1.6  6.70  80
PPM 148183     04:55:58.3 +05:23:56  6.3  1.49  88
PPM 148301     05:00:47.4 +04:34:02  7.7  0.46  87
PPM 148281     04:59:55.4 +04:29:21  9.2  0.28  87
87269          04:59:36.2 +04:13:10 16.4        87
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:21 UT

Marc W. Buie, Southwest Research Institute

RECON