RECON: TNO occultation with 2060

Event between (2060) Chiron and star GA0940:00044062 with event index number of 1106738

Geocentric closest approach at 2022/01/18 11:10:10 UTC

J2000 position of star is 00:28:01.6 +05:19:17
Equinox of date position of star is 00:29:09.7 +05:26:35
Stellar brightness G=16.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=18.9

TNO is 18.9 AU from the Sun and 19.2 AU from the Earth.
The TNO is moving 15.4 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 46 seconds.
The 1-sigma cross-track error in the shadow position is 698 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=420.7 km assuming a 5% albedo -- 27.3 sec chord
Diameter=171.8 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 2060, (2022/01/18 11:10UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:51.8 -29:30:18  1.2 41.12 146
Algenib        00:14:22.4 +15:18:22  2.8 10.51 113
PPM 143688     00:38:38.7 +03:15:22  6.4  3.22 114
PPM 143562     00:31:16.8 +04:58:55  7.0  0.70 115
PPM 143517     00:28:22.1 +05:45:33  9.5  0.37 115
2060           00:29:09.8 +05:26:36 16.0       114
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, (2022/01/18 11:10UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 41.12 146
Algenib        00:13:14.2 +15:11:01  2.8 10.51 113
PPM 143688     00:37:30.6 +03:08:06  6.4  3.22 114
PPM 143562     00:30:08.7 +04:51:37  7.0  0.70 115
PPM 143517     00:27:13.9 +05:38:14  9.5  0.37 115
2060           00:28:01.6 +05:19:17 16.0       115
Positions are for J2000

Event circumstances last updated at 2022/01/10 00:02:51 UT

Marc W. Buie, Southwest Research Institute

RECON