RECON: TNO occultation with 15VZ168

Event between 15VZ168 and star GA1060:00328565 with event index number of 1021805

Geocentric closest approach at 2019/02/23 19:01:30 UTC

J2000 position of star is 03:15:07.9 +16:04:06
Equinox of date position of star is 03:16:12.2 +16:08:17
Stellar brightness G=14.5, use SENSEUP=128
Star is 161 degrees from the moon. Moon is 77% illuminated.
TNO apparent brightness V=24.8

TNO is 49.5 AU from the Sun and 49.8 AU from the Earth.
The TNO is moving 10.8 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 1472 seconds.
The 1-sigma cross-track error in the shadow position is 5622 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=174.6 km assuming a 5% albedo -- 16.2 sec chord
Diameter=71.3 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 15VZ168, (2019/02/23 19:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.3 +16:32:47  0.8 19.38 142
Menkar         03:03:17.0 +04:09:49  2.5 12.39 166
PPM 118814     03:07:27.0 +13:15:36  5.6  3.57 164
PPM 118930     03:15:12.7 +15:39:38  7.2  0.53 161
PPM 118957     03:16:32.8 +15:58:41  9.0  0.18 161
15VZ168        03:16:12.3 +16:08:18 14.5       161
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 15VZ168, (2019/02/23 19:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 19.38 142
Menkar         03:02:16.8 +04:05:21  2.5 12.39 166
PPM 118814     03:06:23.7 +13:11:13  5.6  3.57 164
PPM 118930     03:14:08.4 +15:35:25  7.2  0.53 161
PPM 118957     03:15:28.4 +15:54:29  9.0  0.18 161
15VZ168        03:15:07.9 +16:04:06 14.5       161
Positions are for J2000

Event circumstances last updated at 2019/02/12 06:16:43 UT

Marc W. Buie, Southwest Research Institute

RECON