RECON: TNO occultation with 14QY441

Event between 14QY441 and star UC4-564-013597 with event index number of 185301

Geocentric closest approach at 2019/03/23 07:01:57 UTC

J2000 position of star is 05:05:25.6 +22:42:30
Equinox of date position of star is 05:06:28.5 +22:43:52
Stellar brightness R=15.4, use SENSEUP=128
Star is 135 degrees from the moon. Moon is 93% illuminated.
TNO apparent brightness V=21.5

TNO is 37.7 AU from the Sun and 37.9 AU from the Earth.
The TNO is moving 11.8 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 271 seconds.
The 1-sigma cross-track error in the shadow position is 1613 km.

The TNO has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 38.8 sec chord
Diameter=186.6 km assuming a 30% albedo -- 15.8 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 
 
 

Star training set for 14QY441, (2019/03/23 07:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:01.5 +16:32:47  0.8  9.31 143
Alnath         05:27:30.5 +28:37:19  1.6  7.54 129
PPM 094053     05:06:47.5 +23:05:09  6.5  0.36 135
PPM 094066     05:07:50.4 +22:32:06  7.0  0.35 135
PPM 094061     05:07:13.1 +22:41:05 10.8  0.15 135
14QY441        05:06:35.2 +22:44:00 15.4       135
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 14QY441, (2019/03/23 07:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.31 143
Alnath         05:26:17.5 +28:36:24  1.6  7.54 129
PPM 094053     05:05:37.7 +23:03:40  6.5  0.36 135
PPM 094066     05:06:40.9 +22:30:38  7.0  0.35 135
PPM 094061     05:06:03.6 +22:39:36 10.8  0.15 135
14QY441        05:05:25.6 +22:42:30 15.4       135
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:12:58 UT

Marc W. Buie, Southwest Research Institute

RECON