RECON: TNO occultation with 15VM170

Event between 15VM170 and star GA1060:00385079 with event index number of 1018767

Geocentric closest approach at 2020/01/01 15:58:46 UTC

J2000 position of star is 03:39:08.9 +16:17:48
Equinox of date position of star is 03:40:13.2 +16:21:26
Stellar brightness G=15.5, use SENSEUP=128
Star is 62 degrees from the moon. Moon is 36% illuminated.
TNO apparent brightness V=24.4

TNO is 39.4 AU from the Sun and 38.7 AU from the Earth.
The TNO is moving 16.7 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 1007 seconds.
The 1-sigma cross-track error in the shadow position is 5607 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=124.2 km assuming a 5% albedo -- 7.4 sec chord
Diameter=50.7 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 15VM170, (2020/01/01 15:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:53  0.8 13.61  75
Menkar         03:03:19.7 +04:10:01  2.5 15.20  50
PPM 119253     03:40:33.8 +16:36:01  6.2  0.25  62
PPM 119262     03:41:08.3 +16:25:25  8.3  0.22  62
PPM 119260     03:40:50.4 +16:14:31  8.8  0.18  62
PPM 119244     03:39:42.0 +16:26:33 10.1  0.16  62
15VM170        03:40:16.8 +16:21:39 15.5        62
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 15VM170, (2020/01/01 15:59UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 13.61  75
Menkar         03:02:16.8 +04:05:21  2.5 15.20  50
PPM 119253     03:39:25.8 +16:32:11  6.2  0.25  62
PPM 119262     03:40:00.4 +16:21:36  8.3  0.22  62
PPM 119260     03:39:42.5 +16:10:41  8.8  0.18  62
PPM 119244     03:38:34.1 +16:22:42 10.1  0.16  62
15VM170        03:39:08.9 +16:17:48 15.5        62
Positions are for J2000

Event circumstances last updated at 2018/12/01 22:19:42 UT

Marc W. Buie, Southwest Research Institute

RECON