RECON: TNO occultation with 15VM164

Event between 15VM164 and star GA1080:00374834 with event index number of 1018526

Geocentric closest approach at 2018/12/28 18:29:48 UTC

J2000 position of star is 03:27:23.0 +19:20:09
Equinox of date position of star is 03:28:28.2 +19:24:03
Stellar brightness G=15.4, use SENSEUP=128
Star is 124 degrees from the moon. Moon is 57% illuminated.
TNO apparent brightness V=24.9

TNO is 30.1 AU from the Sun and 29.4 AU from the Earth.
The TNO is moving 16.7 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 200 seconds.
The 1-sigma cross-track error in the shadow position is 4666 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=61.4 km assuming a 5% albedo -- 3.7 sec chord
Diameter=25.1 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15VM164, (2018/12/28 18:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.8 +16:32:45  0.8 16.54 109
44Zet Per      03:55:19.8 +31:56:19  2.8 13.91 114
65 Ari         03:25:32.0 +20:52:10  5.9  1.62 124
PPM 119098     03:29:00.6 +18:56:50  8.4  0.47 124
PPM 119095     03:28:37.3 +19:15:06  8.9  0.15 124
15VM164        03:28:28.4 +19:24:04 15.4       124
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 15VM164, (2018/12/28 18:30UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 16.54 109
44Zet Per      03:54:07.9 +31:53:01  2.8 13.91 114
65 Ari         03:24:26.1 +20:48:12  5.9  1.62 124
PPM 119098     03:27:55.3 +18:52:56  8.4  0.47 124
PPM 119095     03:27:31.9 +19:11:12  8.9  0.15 124
15VM164        03:27:23.0 +19:20:09 15.4       124
Positions are for J2000

Event circumstances last updated at 2018/12/01 22:11:38 UT

Marc W. Buie, Southwest Research Institute

RECON