RECON: TNO occultation with 60454

Event between (60454) 00CH105 and star GA0800:04487262 with event index number of 2756353

Geocentric closest approach at 2029/05/10 12:24:30 UTC

J2000 position of star is 13:06:58.1 -08:13:23
Equinox of date position of star is 13:08:09.9 -08:20:43
Stellar brightness G=0.0, use SENSEUP=2 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 176 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=23.0

TNO is 41.8 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 275 seconds.
The 1-sigma cross-track error in the shadow position is 4071 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=271.7 km assuming a 5% albedo -- 13.1 sec chord
Diameter=110.9 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 60454, (2029/05/10 12:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:44.7 -11:18:49  1.0  5.37 172
PPM 196204     13:10:04.6 -09:08:27  5.5  0.86 176
PPM 196140     13:06:18.9 -08:43:41  8.0  0.64 176
PPM 196181     13:08:30.5 -08:11:41  9.1  0.18 175
60454          13:08:30.0 -08:22:45  0.0       175
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 60454, (2029/05/10 12:24UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  5.37 172
PPM 196204     13:08:32.4 -08:59:05  5.5  0.86 176
PPM 196140     13:04:47.0 -08:34:16  8.0  0.64 176
PPM 196181     13:06:58.6 -08:02:18  9.1  0.18 175
60454          13:06:58.1 -08:13:23  0.0       176
Positions are for J2000

Event circumstances last updated at 2022/12/12 05:06:48 UT

Marc W. Buie, Southwest Research Institute

RECON