RECON: TNO occultation with 10FX86

Event between 10FX86 and star GA0460:08160600 with event index number of 2086886

Geocentric closest approach at 2023/05/10 21:40:18 UTC

J2000 position of star is 14:49:03.5 -42:44:46
Equinox of date position of star is 14:50:31.0 -42:50:17
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 65 degrees from the moon. Moon is 69% illuminated.
TNO apparent brightness V=21.2

TNO is 45.8 AU from the Sun and 44.9 AU from the Earth.
The TNO is moving 25.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 169 seconds.
The 1-sigma cross-track error in the shadow position is 2225 km.

The TNO has an absolute magnitude Hv=4.6
Diameter=758.6 km assuming a 5% albedo -- 29.7 sec chord
Diameter=309.7 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 10FX86, (2023/05/10 21:26UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:41:13.1 -60:55:51  0.0 18.14  63
Bet Lup        15:00:04.3 -43:13:35  2.7  1.78  63
PPM 319887     14:49:03.8 -43:39:12  6.4  0.86  65
PPM 319957     14:52:30.2 -42:55:04  7.2  0.36  64
PPM 319907     14:49:58.1 -42:45:38  9.1  0.14  65
10FX86         14:50:34.8 -42:50:31 13.9        64
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 10FX86, (2023/05/10 21:26UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:39:25.2 -60:49:52  0.0 18.14  63
Bet Lup        14:58:31.9 -43:08:03  2.7  1.78  63
PPM 319887     14:47:32.1 -43:33:24  6.4  0.86  65
PPM 319957     14:50:58.7 -42:49:21  7.2  0.36  64
PPM 319907     14:48:26.9 -42:39:52  9.1  0.14  65
10FX86         14:49:03.5 -42:44:46 13.9        64
Positions are for J2000

Event circumstances last updated at 2022/05/13 23:10:23 UT

Marc W. Buie, Southwest Research Institute

RECON