RECON: TNO occultation with 2060

Event between (2060) Chiron and star GA0920:00003580 with event index number of 239957

Geocentric closest approach at 2020/01/21 10:50:24 UTC

J2000 position of star is 00:02:15.4 +03:21:04
Equinox of date position of star is 00:03:16.8 +03:27:44
Stellar brightness G=15.3, use SENSEUP=128
Star is 102 degrees from the moon. Moon is 12% illuminated.
TNO apparent brightness V=18.9

TNO is 18.8 AU from the Sun and 19.3 AU from the Earth.
The TNO is moving 19.9 km/sec on the sky relative to the star, or, 5.1 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 705 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 21.0 sec chord
Diameter=170.2 km assuming a 30% albedo -- 8.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 2060, (2020/01/21 10:50UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:45.3 -29:30:56  1.2 36.42  76
Algenib        00:14:16.3 +15:17:42  2.8 12.14 108
22 Psc         23:52:59.5 +03:02:31  5.5  2.60  99
PPM 143103     00:04:41.8 +04:01:07  8.1  0.66 102
PPM 143094     00:04:03.3 +03:22:24  9.9  0.21 102
PPM 143084     00:03:41.7 +03:24:59 10.2  0.11 102
2060           00:03:17.1 +03:27:46 15.3       102
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, (2020/01/21 10:50UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 36.42  76
Algenib        00:13:14.2 +15:11:01  2.8 12.14 108
22 Psc         23:51:57.9 +02:55:49  5.5  2.60  99
PPM 143103     00:03:40.1 +03:54:25  8.1  0.66 102
PPM 143094     00:03:01.6 +03:15:42  9.9  0.21 102
PPM 143084     00:02:40.0 +03:18:17 10.2  0.11 102
2060           00:02:15.4 +03:21:04 15.3       102
Positions are for J2000

Event circumstances last updated at 2019/12/15 20:28:17 UT

Marc W. Buie, Southwest Research Institute

RECON