RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star UC4-679-029994 with event index number of 184384

Geocentric closest approach at 2019/03/21 00:16:34 UTC

J2000 position of star is 04:46:01.8 +45:37:38
Equinox of date position of star is 04:47:20.1 +45:39:31
Stellar brightness R=15.6, use SENSEUP=128
Star is 100 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=20.9

TNO is 15.5 AU from the Sun and 15.7 AU from the Earth.
The TNO is moving 20.0 km/sec on the sky relative to the star, or, 6.3 arcsec/hr.
The 1-sigma error in the time of the event is 317 seconds.
The 1-sigma cross-track error in the shadow position is 3972 km.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.7 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 341275, (2019/03/21 00:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.5 +16:32:47  0.8 29.20 110
3Iot Aur       04:58:14.9 +33:11:41  2.7 12.64 102
PPM 047482     04:56:14.2 +44:05:25  6.0  2.21  99
PPM 047363     04:49:17.3 +45:31:19  7.8  0.35 100
PPM 047324     04:47:11.9 +45:46:15 10.1  0.12 100
341275         04:47:25.8 +45:39:39 15.6       100
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 341275, (2019/03/21 00:17UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 29.20 110
3Iot Aur       04:56:59.6 +33:09:58  2.7 12.64 102
PPM 047482     04:54:51.2 +44:03:38  6.0  2.21  99
PPM 047363     04:47:53.3 +45:29:21  7.8  0.35 100
PPM 047324     04:45:47.8 +45:44:13 10.1  0.12 100
341275         04:46:01.8 +45:37:38 15.6       100
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:19:21 UT

Marc W. Buie, Southwest Research Institute

RECON