RECON: TNO occultation with 01DC106

Event between 01DC106 and star GA0860:04107209 with event index number of 1995476

Geocentric closest approach at 2022/03/10 01:36:26 UTC

J2000 position of star is 12:39:33.9 -02:17:03
Equinox of date position of star is 12:40:42.3 -02:24:20
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 47% illuminated.
TNO apparent brightness V=22.6

TNO is 41.7 AU from the Sun and 40.8 AU from the Earth.
The TNO is moving 23.3 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 137 seconds.
The 1-sigma cross-track error in the shadow position is 2084 km.

The TNO has an absolute magnitude Hv=6.4
Diameter=317.7 km assuming a 5% albedo -- 13.7 sec chord
Diameter=129.7 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 01DC106, (2022/03/10 01:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:21.9 -11:16:35  1.0 14.38 129
PPM 195577     12:32:47.3 -05:10:29  6.4  3.40 114
PPM 178830     12:38:15.5 -02:26:42  7.5  0.61 114
PPM 178843     12:41:40.0 -02:55:16  9.9  0.57 115
PPM 178846     12:42:40.1 -02:05:01 10.6  0.59 115
01DC106        12:40:42.3 -02:24:21 13.6       115
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 01DC106, (2022/03/10 01:36UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 14.38 129
PPM 195577     12:31:38.7 -05:03:09  6.4  3.40 114
PPM 178830     12:37:07.1 -02:19:23  7.5  0.61 114
PPM 178843     12:40:31.5 -02:47:58  9.9  0.57 115
PPM 178846     12:41:31.7 -01:57:44 10.6  0.59 115
01DC106        12:39:33.9 -02:17:03 13.6       115
Positions are for J2000

Event circumstances last updated at 2022/03/04 23:45:45 UT

Marc W. Buie, Southwest Research Institute

RECON