RECON: TNO occultation with 14YY49

Event between 14YY49 and star UC4-460-031132 with event index number of 321890

Geocentric closest approach at 2020/03/10 13:01:03 UTC

J2000 position of star is 07:13:57.7 +01:50:46
Equinox of date position of star is 07:15:00.2 +01:48:38
Stellar brightness R=13.7, use SENSEUP=64
Star is 75 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=23.3

TNO is 19.6 AU from the Sun and 19.1 AU from the Earth.
The TNO is moving 12.6 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 74 seconds.
The 1-sigma cross-track error in the shadow position is 1140 km.

The TNO has an absolute magnitude Hv=10.2
Diameter=55.2 km assuming a 5% albedo -- 4.4 sec chord
Diameter=22.5 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14YY49, (2020/03/10 13:01UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:02.2 -16:44:42 -1.5 19.88  84
Alhena         06:38:52.7 +16:22:49  1.9 17.07  83
PPM 152385     07:20:25.7 +02:42:08  5.9  1.62  74
PPM 152289     07:17:39.4 +01:50:28  7.6  0.66  74
PPM 152238     07:16:14.8 +01:47:30  9.8  0.31  75
PPM 152174     07:14:35.7 +01:46:23 10.2  0.11  75
14YY49         07:15:00.6 +01:48:37 13.7        75
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 14YY49, (2020/03/10 13:01UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.1 -16:43:22 -1.5 19.88  84
Alhena         06:37:42.8 +16:23:57  1.9 17.07  83
PPM 152385     07:19:22.4 +02:44:26  5.9  1.62  74
PPM 152289     07:16:36.5 +01:52:41  7.6  0.66  74
PPM 152238     07:15:11.9 +01:49:41  9.8  0.31  75
PPM 152174     07:13:32.8 +01:48:32 10.2  0.11  75
14YY49         07:13:57.7 +01:50:46 13.7        75
Positions are for J2000

Event circumstances last updated at 2020/01/21 21:03:12 UT

Marc W. Buie, Southwest Research Institute

RECON