RECON: TNO occultation with 499514

Event between (499514) 10OO127 and star UC4-518-143045 with event index number of 220278

Geocentric closest approach at 2018/05/28 18:32:45 UTC

J2000 position of star is 22:09:38.6 +13:26:51
Equinox of date position of star is 22:10:31.1 +13:32:09
Stellar brightness R=15.0, use SENSEUP=128
Star is 99 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=21.3

TNO is 45.4 AU from the Sun and 45.4 AU from the Earth.
The TNO is moving 12.0 km/sec on the sky relative to the star, or, 1.3 arcsec/hr.
The 1-sigma error in the time of the event is 239 seconds.
The 1-sigma cross-track error in the shadow position is 5166 km.

The TNO has an absolute magnitude Hv=4.6
Diameter=724.5 km assuming a 5% albedo -- 60.3 sec chord
Diameter=295.8 km assuming a 30% albedo -- 24.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 499514, (2018/05/28 18:33UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:03.6 +45:20:49  1.3 36.92  90
Markab         23:05:40.8 +15:18:17  2.5 13.46 112
20 Peg         22:01:59.2 +13:12:31  5.6  2.11  97
PPM 141135     22:11:13.3 +13:50:23  8.4  0.34  99
PPM 141115     22:10:09.5 +13:45:41  8.9  0.24  99
499514         22:10:32.5 +13:32:18 15.0        99
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 499514, (2018/05/28 18:33UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 36.92  90
Markab         23:04:45.7 +15:12:18  2.5 13.46 112
20 Peg         22:01:05.4 +13:07:10  5.6  2.11  97
PPM 141135     22:10:19.5 +13:44:55  8.4  0.34  99
PPM 141115     22:09:15.7 +13:40:14  8.9  0.24  99
499514         22:09:38.6 +13:26:51 15.0        99
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:40:47 UT

Marc W. Buie, Southwest Research Institute

RECON