RECON: TNO occultation with 2060

Event between (2060) Chiron and star GA0980:00102834 with event index number of 1389081

Geocentric closest approach at 2025/02/05 22:30:29 UTC

J2000 position of star is 01:09:57.8 +08:21:25
Equinox of date position of star is 01:11:14.1 +08:29:10
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 36 degrees from the moon. Moon is 57% illuminated.
Apparent brightness V=18.6

Object is 18.6 AU from the Sun and 19.0 AU from the Earth.
Apparent velocity is 19.3 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 37 seconds.
The 1-sigma cross-track error in the shadow position is 693 km.

The object has an absolute magnitude Hv=5.6
Diameter=434.5 km assuming a 5% albedo -- 23.7 sec chord
Diameter=177.4 km assuming a 30% albedo -- 9.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 2060, (2025/02/05 22:30UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:14:31.9 +15:19:23  2.8 15.46  46
71Eps Psc      01:04:15.0 +08:01:29  4.3  1.80  38
PPM 144276     01:08:12.6 +08:47:09  8.5  0.81  37
PPM 144313     01:10:29.8 +08:25:46 10.0  0.20  36
2060           01:11:16.5 +08:29:25 16.4        36
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, (2025/02/05 22:30UT)
Object            RA         Dec     mag  sep  mel
Algenib        00:13:14.2 +15:11:01  2.8 15.46  46
71Eps Psc      01:02:56.5 +07:53:25  4.3  1.80  38
PPM 144276     01:06:53.9 +08:39:08  8.5  0.81  37
PPM 144313     01:09:11.1 +08:17:47 10.0  0.20  36
2060           01:09:57.8 +08:21:25 16.4        36
Positions are for J2000

Event circumstances last updated at 2024/05/05 03:30:06 UT

Marc W. Buie, Southwest Research Institute

RECON