RECON: TNO occultation with 149348

Event between (149348) 02VS130 and star UC4-569-014152 with event index number of 170725

Geocentric closest approach at 2019/01/02 19:31:48 UTC

J2000 position of star is 05:03:55.8 +23:45:10
Equinox of date position of star is 05:05:00.0 +23:46:34
Stellar brightness R=15.0, use SENSEUP=128
Star is 167 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=22.6

TNO is 42.9 AU from the Sun and 42.0 AU from the Earth.
The TNO is moving 22.9 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 1619 seconds.
The 1-sigma cross-track error in the shadow position is 3108 km.

The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 14.4 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 149348, (2019/01/02 19:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.8 +16:32:46  0.8  9.78 176
Alnath         05:27:29.7 +28:37:18  1.6  6.98 161
PPM 094053     05:06:46.7 +23:05:08  6.5  0.79 167
PPM 094048     05:06:21.4 +23:49:26  8.3  0.29 167
PPM 094016     05:04:59.8 +23:47:37  9.8  0.03 167
149348         05:05:05.1 +23:46:41 15.0       167
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 149348, (2019/01/02 19:32UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.78 176
Alnath         05:26:17.5 +28:36:24  1.6  6.98 161
PPM 094053     05:05:37.7 +23:03:40  6.5  0.79 167
PPM 094048     05:05:12.0 +23:47:56  8.3  0.29 167
PPM 094016     05:03:50.5 +23:46:05  9.8  0.03 167
149348         05:03:55.8 +23:45:10 15.0       167
Positions are for J2000

Event circumstances last updated at 2017/08/04 18:03:49 UT

Marc W. Buie, Southwest Research Institute

RECON