RECON: TNO occultation with 04KV18

Event between 04KV18 and star GA0740:12158637 with event index number of 301759

Geocentric closest approach at 2020/10/17 00:37:06 UTC

J2000 position of star is 17:49:10.3 -15:55:47
Equinox of date position of star is 17:50:20.0 -15:56:05
Stellar brightness G=14.7, use SENSEUP=128
Star is 60 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=25.0

TNO is 30.1 AU from the Sun and 30.5 AU from the Earth.
The TNO is moving 19.2 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 350 seconds.
The 1-sigma cross-track error in the shadow position is 2364 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=95.5 km assuming a 5% albedo -- 3.1 sec chord
Diameter=39.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 04KV18, (2020/10/17 00:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:41.1 -26:28:35  0.9 21.31  43
35Eta Oph      17:11:34.3 -15:44:57  2.6  9.33  51
PPM 233599     17:48:48.0 -14:43:55  5.9  1.26  60
PPM 233652     17:51:35.9 -15:58:32  8.3  0.30  60
PPM 233633     17:50:55.1 -16:10:05  9.7  0.27  60
04KV18         17:50:22.1 -15:56:06 14.7        60
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, (2020/10/17 00:37UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.31  43
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.33  51
PPM 233599     17:47:36.7 -14:43:33  5.9  1.26  60
PPM 233652     17:50:24.0 -15:58:15  8.3  0.30  60
PPM 233633     17:49:43.1 -16:09:47  9.7  0.27  60
04KV18         17:49:10.3 -15:55:47 14.7        60
Positions are for J2000

Event circumstances last updated at 2020/03/08 20:57:38 UT

Marc W. Buie, Southwest Research Institute

RECON