RECON: TNO occultation with 119315

Event between (119315) 01SQ73 and star GA1300:03813275 with event index number of 1054978

Geocentric closest approach at 2021/02/28 13:20:42 UTC

J2000 position of star is 07:29:55.9 +40:00:05
Equinox of date position of star is 07:31:22.6 +39:57:23
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 68 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.8

TNO is 19.9 AU from the Sun and 19.3 AU from the Earth.
The TNO is moving 14.6 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 123 seconds.
The 1-sigma cross-track error in the shadow position is 882 km.

The TNO has an absolute magnitude Hv=9.6
Diameter=72.4 km assuming a 5% albedo -- 4.9 sec chord
Diameter=29.6 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 119315, (2021/02/28 13:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:36.5 +27:58:24  1.1 12.39  63
PPM 072880     07:33:21.5 +38:50:57  6.5  1.17  67
PPM 049877     07:29:38.3 +40:36:42  7.7  0.73  68
PPM 049925     07:32:30.8 +40:18:46  9.5  0.42  68
PPM 049907     07:31:26.5 +40:04:44 10.4  0.12  68
119315         07:31:22.8 +39:57:22 13.4        68
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 119315, (2021/02/28 13:21UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 12.39  63
PPM 072880     07:31:55.5 +38:53:44  6.5  1.17  67
PPM 049877     07:28:10.8 +40:39:23  7.7  0.73  68
PPM 049925     07:31:03.6 +40:21:31  9.5  0.42  68
PPM 049907     07:29:59.5 +40:07:27 10.4  0.12  68
119315         07:29:55.9 +40:00:05 13.4        68
Positions are for J2000

Event circumstances last updated at 2021/02/06 20:39:39 UT

Marc W. Buie, Southwest Research Institute

RECON