RECON: TNO occultation with 11HO60

Event between 11HO60 and star GA0480:09443889 with event index number of 295278

Geocentric closest approach at 2019/01/24 19:44:01 UTC

J2000 position of star is 15:45:11.6 -40:58:00
Equinox of date position of star is 15:46:28.1 -41:01:29
Stellar brightness G=16.5, use SENSEUP=128
Star is 72 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=21.9

TNO is 36.8 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 23.4 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 217 seconds.
The 1-sigma cross-track error in the shadow position is 4693 km.

The TNO has an absolute magnitude Hv=6.1
Diameter=358.1 km assuming a 5% albedo -- 15.3 sec chord
Diameter=146.2 km assuming a 30% albedo -- 6.3 sec chord
Dynamical classification is 11:2EEEEEEEEE
 
 
 
 
 
 
 
 

Star training set for 11HO60, (2019/01/24 19:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:34.8 -26:28:22  0.9 17.17  75
Eta Lup        16:01:23.5 -38:26:58  2.8  3.85  73
PPM 320951     15:45:40.2 -41:52:40  6.0  0.87  72
PPM 320970     15:46:42.2 -40:42:20  8.5  0.32  72
PPM 320962     15:46:18.8 -40:54:03  9.5  0.13  72
11HO60         15:46:28.7 -41:01:31 16.5        72
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 11HO60, (2019/01/24 19:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.17  75
Eta Lup        16:00:07.3 -38:23:48  2.8  3.85  73
PPM 320951     15:44:22.6 -41:49:08  6.0  0.87  72
PPM 320970     15:45:25.3 -40:38:49  8.5  0.32  72
PPM 320962     15:45:01.8 -40:50:32  9.5  0.13  72
11HO60         15:45:11.6 -40:58:00 16.5        72
Positions are for J2000

Event circumstances last updated at 2018/12/04 05:11:26 UT

Marc W. Buie, Southwest Research Institute

RECON