RECON: TNO occultation with 04MU8

Event between 04MU8 and star GA0680:36031211 with event index number of 164155

Geocentric closest approach at 2018/11/11 05:02:57 UTC

J2000 position of star is 20:25:29.5 -20:12:25
Equinox of date position of star is 20:26:34.9 -20:08:41
Stellar brightness G=15.2, use SENSEUP=128
Star is 33 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=23.0

TNO is 47.6 AU from the Sun and 47.9 AU from the Earth.
The TNO is moving 12.2 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 670 seconds.
The 1-sigma cross-track error in the shadow position is 4174 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=361.4 km assuming a 5% albedo -- 29.6 sec chord
Diameter=147.5 km assuming a 30% albedo -- 12.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 04MU8, (2018/11/11 05:03UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:41.3 -29:31:19  1.2 35.59  66
38Zet Sgr      19:03:48.6 -29:51:06  2.7 21.07  16
7Sig Cap       20:20:28.8 -19:03:30  5.3  1.80  32
PPM 271107     20:26:02.9 -19:56:58  8.2  0.23  33
04MU8          20:26:34.9 -20:08:41 15.2        34
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 04MU8, (2018/11/11 05:03UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 35.59  66
38Zet Sgr      19:02:36.7 -29:52:49  2.7 21.07  16
7Sig Cap       20:19:23.6 -19:07:07  5.3  1.80  32
PPM 271107     20:24:57.6 -20:00:42  8.2  0.23  33
04MU8          20:25:29.5 -20:12:25 15.2        33
Positions are for J2000

Event circumstances last updated at 2018/11/04 22:23:19 UT

Marc W. Buie, Southwest Research Institute

RECON