RECON: TNO occultation with 2060

Event between (2060) Chiron and star UC4-470-137180 with event index number of 148667

Geocentric closest approach at 2018/08/15 23:56:41 UTC

J2000 position of star is 23:59:31.2 +03:53:04
Equinox of date position of star is 00:00:26.4 +03:59:03
Stellar brightness R=15.9, use SENSEUP=128
Star is 155 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=18.6

TNO is 18.7 AU from the Sun and 17.9 AU from the Earth.
The TNO is moving 17.8 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 38 seconds.
The 1-sigma cross-track error in the shadow position is 657 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 23.4 sec chord
Diameter=170.2 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 2060, (2018/08/15 23:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:40.5 -29:31:23  1.2 36.64 128
Algenib        00:14:11.8 +15:17:13  2.8 11.79 156
22 Psc         23:52:55.1 +03:02:02  5.5  2.11 153
PPM 143103     00:04:37.4 +04:00:38  8.1  1.03 156
PPM 174631     23:59:53.5 +04:22:38  9.1  0.42 155
PPM 174638     00:00:16.3 +04:08:15 10.5  0.16 155
2060           00:00:28.5 +03:59:17 15.9       155
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, (2018/08/15 23:57UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 36.64 128
Algenib        00:13:14.2 +15:11:01  2.8 11.79 156
22 Psc         23:51:57.9 +02:55:49  5.5  2.11 153
PPM 143103     00:03:40.1 +03:54:25  8.1  1.03 156
PPM 174631     23:58:56.2 +04:16:24  9.1  0.42 155
PPM 174638     23:59:19.0 +04:02:02 10.5  0.16 155
2060           23:59:31.2 +03:53:04 15.9       155
Positions are for J2000

Event circumstances last updated at 2017/12/15 17:13:13 UT

Marc W. Buie, Southwest Research Institute

RECON