RECON: TNO occultation with 15VP165

Event between 15VP165 and star GA1060:00409431 with event index number of 1019372

Geocentric closest approach at 2019/10/15 02:11:56 UTC

J2000 position of star is 03:48:25.8 +16:35:12
Equinox of date position of star is 03:49:30.9 +16:38:39
Stellar brightness G=16.8, use SENSEUP=128
Star is 24 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=24.6

TNO is 32.3 AU from the Sun and 31.5 AU from the Earth.
The TNO is moving 18.9 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 941 seconds.
The 1-sigma cross-track error in the shadow position is 5992 km.

The TNO has an absolute magnitude Hv=9.4
Diameter=79.1 km assuming a 5% albedo -- 4.2 sec chord
Diameter=32.3 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15VP165, (2019/10/15 02:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.5 +16:32:51  0.8 11.38  35
44Zet Per      03:55:22.8 +31:56:27  2.8 15.35  32
PPM 119433     03:54:18.1 +17:23:04  6.0  1.35  25
PPM 119381     03:50:03.6 +16:31:06  7.9  0.18  24
15VP165        03:49:33.3 +16:38:46 16.8        24
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 15VP165, (2019/10/15 02:12UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 11.38  35
44Zet Per      03:54:07.9 +31:53:01  2.8 15.35  32
PPM 119433     03:53:10.2 +17:19:37  6.0  1.35  25
PPM 119381     03:48:56.2 +16:27:32  7.9  0.18  24
15VP165        03:48:25.8 +16:35:12 16.8        24
Positions are for J2000

Event circumstances last updated at 2019/01/28 21:53:38 UT

Marc W. Buie, Southwest Research Institute

RECON