RECON: TNO occultation with 06TO130

Event between 06TO130 and star GA1080:00357434 with event index number of 2015975

Geocentric closest approach at 2022/10/17 17:48:28 UTC

J2000 position of star is 03:20:17.3 +18:26:08
Equinox of date position of star is 03:21:35.1 +18:31:00
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 62 degrees from the moon. Moon is 50% illuminated.
TNO apparent brightness V=22.6

TNO is 30.9 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 131 seconds.
The 1-sigma cross-track error in the shadow position is 1654 km.

The TNO has an absolute magnitude Hv=7.6
Diameter=183.7 km assuming a 5% albedo -- 8.9 sec chord
Diameter=75.0 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 06TO130, (2022/10/17 17:48UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:13.9 +16:33:12  0.8 18.13  46
Menkar         03:03:28.4 +04:10:40  2.5 15.01  72
63Tau2Ari      03:24:04.2 +20:49:19  6.2  2.38  61
PPM 118985     03:19:37.6 +18:15:10  7.8  0.53  63
PPM 119021     03:22:04.6 +18:49:05  9.0  0.32  62
06TO130        03:21:35.3 +18:31:00 16.5        62
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 06TO130, (2022/10/17 17:48UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 18.13  46
Menkar         03:02:16.8 +04:05:21  2.5 15.01  72
63Tau2Ari      03:22:45.2 +20:44:31  6.2  2.38  61
PPM 118985     03:18:19.9 +18:10:15  7.8  0.53  63
PPM 119021     03:20:46.5 +18:44:13  9.0  0.32  62
06TO130        03:20:17.3 +18:26:08 16.5        62
Positions are for J2000

Event circumstances last updated at 2022/10/01 04:15:30 UT

Marc W. Buie, Southwest Research Institute

RECON