RECON: TNO occultation with 08JO41

Event between 08JO41 and star GA1080:05726440 with event index number of 204937

Geocentric closest approach at 2019/07/26 02:15:48 UTC

J2000 position of star is 18:39:06.0 +19:02:08
Equinox of date position of star is 18:39:55.1 +19:03:13
Stellar brightness G=14.9, use SENSEUP=128
Star is 117 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=24.7

TNO is 41.6 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 352 seconds.
The 1-sigma cross-track error in the shadow position is 4953 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=123.6 km assuming a 5% albedo -- 5.1 sec chord
Diameter=50.5 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 08JO41, (2019/07/26 02:16UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:36.1 +38:48:10  0.0 19.75 108
Rasalhague     17:35:50.6 +12:32:50  2.1 16.73 133
111 Her        18:47:53.1 +18:12:16  4.4  2.06 115
PPM 135066     18:41:10.6 +19:43:54  8.2  0.74 116
PPM 135045     18:40:22.8 +19:03:47  9.9  0.10 117
08JO41         18:39:57.3 +19:03:16 14.9       117
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 08JO41, (2019/07/26 02:16UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 19.75 108
Rasalhague     17:34:56.2 +12:33:32  2.1 16.73 133
111 Her        18:47:01.4 +18:10:56  4.4  2.06 115
PPM 135066     18:40:19.7 +19:42:45  8.2  0.74 116
PPM 135045     18:39:31.6 +19:02:39  9.9  0.10 117
08JO41         18:39:06.0 +19:02:08 14.9       117
Positions are for J2000

Event circumstances last updated at 2018/09/24 17:49:51 UT

Marc W. Buie, Southwest Research Institute

RECON