RECON: TNO occultation with 15VA167

Event between 15VA167 and star GA1060:00373070 with event index number of 1015695

Geocentric closest approach at 2019/11/27 17:29:16 UTC

J2000 position of star is 03:34:21.4 +16:24:38
Equinox of date position of star is 03:35:26.1 +16:28:24
Stellar brightness G=16.3, use SENSEUP=128
Star is 156 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=23.7

TNO is 40.1 AU from the Sun and 39.1 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 828 seconds.
The 1-sigma cross-track error in the shadow position is 5332 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=177.8 km assuming a 5% albedo -- 7.1 sec chord
Diameter=72.6 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 15VA167, (2019/11/27 17:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.9 +16:32:52  0.8 14.76 170
Menkar         03:03:19.3 +04:10:00  2.5 14.62 144
PPM 119253     03:40:33.5 +16:36:00  6.2  1.22 157
PPM 119193     03:35:56.6 +16:11:33  8.5  0.30 156
PPM 119192     03:35:55.3 +16:33:18 10.2  0.13 156
15VA167        03:35:28.9 +16:28:34 16.3       156
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 15VA167, (2019/11/27 17:29UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 14.76 170
Menkar         03:02:16.8 +04:05:21  2.5 14.62 144
PPM 119253     03:39:25.8 +16:32:11  6.2  1.22 157
PPM 119193     03:34:49.2 +16:07:38  8.5  0.30 156
PPM 119192     03:34:47.7 +16:29:23 10.2  0.13 156
15VA167        03:34:21.4 +16:24:38 16.3       156
Positions are for J2000

Event circumstances last updated at 2019/01/30 20:37:41 UT

Marc W. Buie, Southwest Research Institute

RECON