RECON: TNO occultation with 471165

Event between (471165) 10HE79 and star GA0700:06508030 with event index number of 253954

Geocentric closest approach at 2020/04/07 21:59:22 UTC

J2000 position of star is 16:31:18.5 -19:13:24
Equinox of date position of star is 16:32:26.5 -19:15:50
Stellar brightness G=15.5, use SENSEUP=128
Star is 53 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=20.9

TNO is 37.4 AU from the Sun and 36.8 AU from the Earth.
The TNO is moving 13.9 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 250 seconds.
The 1-sigma cross-track error in the shadow position is 2652 km.

The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 41.4 sec chord
Diameter=234.9 km assuming a 30% albedo -- 16.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 471165, (2020/04/07 21:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.2 -26:28:31  0.9  7.22  55
8Bet1Sco       16:06:37.1 -19:51:34  2.6  6.12  47
7Chi Oph       16:28:12.1 -18:30:02  4.1  1.27  52
PPM 231759     16:30:54.2 -18:43:31  8.1  0.66  53
PPM 231825     16:33:51.1 -19:38:00  9.0  0.49  54
471165         16:32:29.6 -19:15:56 15.5        54
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 471165, (2020/04/07 21:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.22  55
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.12  47
7Chi Oph       16:27:01.4 -18:27:23  4.1  1.27  52
PPM 231759     16:29:43.4 -18:40:56  8.1  0.66  53
PPM 231825     16:32:39.8 -19:35:30  9.0  0.49  54
471165         16:31:18.5 -19:13:24 15.5        53
Positions are for J2000

Event circumstances last updated at 2019/05/23 22:46:39 UT

Marc W. Buie, Southwest Research Institute

RECON