RECON: TNO occultation with 15VE170

Event between 15VE170 and star GA1060:00377355 with event index number of 1016956

Geocentric closest approach at 2019/02/25 22:44:28 UTC

J2000 position of star is 03:36:06.1 +17:06:51
Equinox of date position of star is 03:37:11.2 +17:10:35
Stellar brightness G=16.6, use SENSEUP=128
Star is 175 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=24.0

TNO is 37.0 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 10.4 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 750 seconds.
The 1-sigma cross-track error in the shadow position is 3671 km.

The TNO has an absolute magnitude Hv=8.1
Diameter=143.2 km assuming a 5% albedo -- 13.7 sec chord
Diameter=58.5 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 15VE170, (2019/02/25 22:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.3 +16:32:47  0.8 14.33 171
44Zet Per      03:55:20.4 +31:56:20  2.8 15.32 164
PPM 119253     03:40:30.9 +16:35:52  6.2  0.98 176
PPM 119178     03:34:44.2 +17:23:33  8.5  0.62 174
PPM 119233     03:38:45.0 +17:03:04  9.5  0.39 175
PPM 119219     03:37:57.6 +17:17:06 10.2  0.21 175
15VE170        03:37:11.4 +17:10:35 16.6       175
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 15VE170, (2019/02/25 22:44UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.33 171
44Zet Per      03:54:07.9 +31:53:01  2.8 15.32 164
PPM 119253     03:39:25.8 +16:32:11  6.2  0.98 176
PPM 119178     03:33:38.9 +17:19:45  8.5  0.62 174
PPM 119233     03:37:39.7 +16:59:22  9.5  0.39 175
PPM 119219     03:36:52.3 +17:13:22 10.2  0.21 175
15VE170        03:36:06.1 +17:06:51 16.6       175
Positions are for J2000

Event circumstances last updated at 2019/02/12 06:19:49 UT

Marc W. Buie, Southwest Research Institute

RECON