RECON: TNO occultation with 04KV18

Event between 04KV18 and star GA0740:16706554 with event index number of 2563751

Geocentric closest approach at 2022/06/02 22:35:20 UTC

J2000 position of star is 18:13:11.6 -14:52:51
Equinox of date position of star is 18:14:27.7 -14:52:24
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=23.5

TNO is 30.4 AU from the Sun and 29.5 AU from the Earth.
The TNO is moving 22.3 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 329 seconds.
The 1-sigma cross-track error in the shadow position is 1879 km.

The TNO has an absolute magnitude Hv=8.7
Diameter=110.2 km assuming a 5% albedo -- 4.9 sec chord
Diameter=45.0 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 04KV18, (2022/06/02 22:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.1 -26:28:47  0.9 26.81 140
Nunki          18:56:39.2 -26:16:01  2.0 15.06 172
PPM 234113     18:10:59.8 -13:55:44  6.4  1.27 158
PPM 234184     18:13:45.7 -15:21:58  8.5  0.52 159
PPM 234193     18:14:13.2 -15:11:06  8.7  0.32 159
04KV18         18:14:28.5 -14:52:23 13.4       159
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 04KV18, (2022/06/02 22:35UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.81 140
Nunki          18:55:15.9 -26:17:49  2.0 15.06 172
PPM 234113     18:09:43.4 -13:56:04  6.4  1.27 158
PPM 234184     18:12:28.5 -15:22:24  8.5  0.52 159
PPM 234193     18:12:56.1 -15:11:33  8.7  0.32 159
04KV18         18:13:11.6 -14:52:51 13.4       159
Positions are for J2000

Event circumstances last updated at 2022/03/11 00:19:53 UT

Marc W. Buie, Southwest Research Institute

RECON