RECON: TNO occultation with 134340

Event between (134340) Pluto and star GA0660:38091262 with event index number of 2038704

Geocentric closest approach at 2021/11/05 15:12:56 UTC

J2000 position of star is 19:45:48.5 -22:54:55
Equinox of date position of star is 19:47:06.3 -22:51:40
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=15.2

TNO is 34.4 AU from the Sun and 34.7 AU from the Earth.
The TNO is moving 15.2 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 85 seconds.
The 1-sigma cross-track error in the shadow position is 1259 km.

The TNO has an absolute magnitude Hv=-0.4
Diameter=7413.4 km assuming a 5% albedo -- 486.5 sec chord
Diameter=3026.5 km assuming a 30% albedo -- 198.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 134340, (2021/11/05 15:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.2 -29:30:22  1.2 43.23 100
38Zet Sgr      19:04:00.0 -29:50:49  2.7 11.91  50
PPM 270116     19:41:25.8 -23:22:38  5.7  1.40  59
PPM 270210     19:45:50.9 -22:48:07  7.8  0.30  60
PPM 270235     19:47:02.6 -22:58:17  9.2  0.11  60
134340         19:47:06.6 -22:51:39 15.6        61
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 134340, (2021/11/05 15:13UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 43.23 100
38Zet Sgr      19:02:36.7 -29:52:49  2.7 11.91  50
PPM 270116     19:40:07.2 -23:25:45  5.7  1.40  59
PPM 270210     19:44:32.7 -22:51:21  7.8  0.30  60
PPM 270235     19:45:44.3 -23:01:33  9.2  0.11  60
134340         19:45:48.5 -22:54:55 15.6        60
Positions are for J2000

Event circumstances last updated at 2021/10/04 01:48:08 UT

Marc W. Buie, Southwest Research Institute

RECON