RECON: TNO occultation with 10DN93

Event between 10DN93 and star UC4-640-048010 with event index number of 132942

Geocentric closest approach at 2017/05/16 17:04:16 UTC

J2000 position of star is 13:08:19.7 +37:55:07
Equinox of date position of star is 13:09:07.6 +37:49:35
Stellar brightness R=15.4, use SENSEUP=128
Star is 112 degrees from the moon. Moon is 72% illuminated.
TNO apparent brightness V=22.1

TNO is 48.4 AU from the Sun and 48.0 AU from the Earth.
The TNO is moving 19.7 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 356 seconds.
The 1-sigma cross-track error in the shadow position is 4891 km.

The TNO has an absolute magnitude Hv=5.1
Diameter=583.5 km assuming a 5% albedo -- 29.6 sec chord
Diameter=238.2 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 10DN93, (2017/05/16 17:04UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:27.3 +19:05:34  0.0 23.79  93
Alkaid         13:48:13.4 +49:13:37  1.9 13.40 106
15 CVn         13:10:30.0 +38:26:30  6.2  0.67 112
PPM 076970     13:10:26.6 +37:19:52  7.1  0.56 112
PPM 076948     13:08:26.2 +37:48:14 10.7  0.14 112
10DN93         13:09:07.8 +37:49:34 15.4       112
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 10DN93, (2017/05/16 17:04UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.3 +19:10:22  0.0 23.79  93
Alkaid         13:47:32.2 +49:18:48  1.9 13.40 106
15 CVn         13:09:42.1 +38:32:02  6.2  0.67 112
PPM 076970     13:09:38.5 +37:25:24  7.1  0.56 112
PPM 076948     13:07:38.1 +37:53:47 10.7  0.14 112
10DN93         13:08:19.7 +37:55:07 15.4       112
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:06:30 UT

Marc W. Buie, Southwest Research Institute

RECON