RECON: TNO occultation with 2060

Event between (2060) Chiron and star GA0960:00061225 with event index number of 1211878

Geocentric closest approach at 2022/12/15 17:38:46 UTC

J2000 position of star is 00:39:58.7 +06:16:09
Equinox of date position of star is 00:41:09.8 +06:23:41
Stellar brightness G=12.7, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=18.7

TNO is 18.8 AU from the Sun and 18.5 AU from the Earth.
The TNO is moving 4.2 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 675 km.

The TNO has an absolute magnitude Hv=5.7
Diameter=434.5 km assuming a 5% albedo -- 105.0 sec chord
Diameter=177.4 km assuming a 30% albedo -- 42.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 2060, (2022/12/15 17:39UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:25.3 +15:18:40  2.8 11.07 152
96 G. Psc      00:49:35.2 +05:23:55  5.8  2.32 153
PPM 143680     00:38:08.2 +05:32:19  8.2  1.14 155
PPM 143729     00:39:45.8 +06:08:50  9.2  0.43 155
2060           00:41:09.9 +06:23:42 12.7       154
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 2060, (2022/12/15 17:39UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 11.07 152
96 G. Psc      00:48:24.0 +05:16:26  5.8  2.32 153
PPM 143680     00:36:57.1 +05:24:45  8.2  1.14 155
PPM 143729     00:38:34.6 +06:01:16  9.2  0.43 155
2060           00:39:58.7 +06:16:09 12.7       154
Positions are for J2000

Event circumstances last updated at 2022/12/02 03:09:30 UT

Marc W. Buie, Southwest Research Institute

RECON