RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star UC4-678-031026 with event index number of 184387

Geocentric closest approach at 2019/03/26 17:37:30 UTC

J2000 position of star is 04:47:14.3 +45:29:33
Equinox of date position of star is 04:48:32.7 +45:31:25
Stellar brightness R=16.5, use SENSEUP=128
Star is 154 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=20.9

TNO is 15.5 AU from the Sun and 15.8 AU from the Earth.
The TNO is moving 21.8 km/sec on the sky relative to the star, or, 6.9 arcsec/hr.
The 1-sigma error in the time of the event is 291 seconds.
The 1-sigma cross-track error in the shadow position is 4024 km.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.3 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 341275, (2019/03/26 17:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.6 +16:32:47  0.8 29.08 170
3Iot Aur       04:58:14.9 +33:11:41  2.7 12.47 166
PPM 047482     04:56:14.3 +44:05:25  6.0  1.97 156
PPM 047363     04:49:17.4 +45:31:19  7.8  0.11 154
341275         04:48:38.3 +45:31:33 16.5       154
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, (2019/03/26 17:38UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 29.08 170
3Iot Aur       04:56:59.6 +33:09:58  2.7 12.47 166
PPM 047482     04:54:51.2 +44:03:38  6.0  1.97 156
PPM 047363     04:47:53.3 +45:29:21  7.8  0.11 154
341275         04:47:14.3 +45:29:33 16.5       154
Positions are for J2000

Event circumstances last updated at 2017/12/06 18:48:57 UT

Marc W. Buie, Southwest Research Institute

RECON