RECON: TNO occultation with 04KV18

Event between 04KV18 and star GA0740:13409454 with event index number of 268029

Geocentric closest approach at 2020/06/09 22:39:44 UTC

J2000 position of star is 17:54:27.7 -15:44:06
Equinox of date position of star is 17:55:31.3 -15:44:14
Stellar brightness G=13.1, use SENSEUP=32
Star is 44 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.7

TNO is 30.0 AU from the Sun and 29.0 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 673 seconds.
The 1-sigma cross-track error in the shadow position is 2376 km.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 4.0 sec chord
Diameter=39.0 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 04KV18, (2020/06/09 22:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.8 -26:28:32  0.9 22.49  62
35Eta Oph      17:11:33.1 -15:44:56  2.6 10.61  55
PPM 233766     17:57:29.6 -15:48:52  6.1  0.45  44
PPM 233728     17:55:51.1 -15:43:56  9.3  0.05  44
04KV18         17:55:38.2 -15:44:14 13.1        44
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, (2020/06/09 22:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.49  62
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.61  55
PPM 233766     17:56:19.0 -15:48:46  6.1  0.45  44
PPM 233728     17:54:40.6 -15:43:48  9.3  0.05  44
04KV18         17:54:27.7 -15:44:06 13.1        44
Positions are for J2000

Event circumstances last updated at 2018/06/05 19:29:44 UT

Marc W. Buie, Southwest Research Institute

RECON