RECON: TNO occultation with 12TE324

Event between 12TE324 and star GA0980:00207517 with event index number of 1562707

Geocentric closest approach at 2020/02/21 22:10:47 UTC

J2000 position of star is 02:25:56.1 +09:08:18
Equinox of date position of star is 02:26:58.6 +09:13:32
Stellar brightness G=14.6, use SENSEUP=128
Star is 83 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=23.1

TNO is 42.6 AU from the Sun and 43.1 AU from the Earth.
The TNO is moving 17.4 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 291 seconds.
The 1-sigma cross-track error in the shadow position is 2295 km.

The TNO has an absolute magnitude Hv=6.6
Diameter=293.8 km assuming a 5% albedo -- 16.9 sec chord
Diameter=119.9 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 12TE324, (2020/02/21 22:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.7 +16:32:54  0.8 32.49 116
Menkar         03:03:20.1 +04:10:03  2.5 10.34  90
73Xi 2Cet      02:29:14.0 +08:32:58  4.3  0.87  84
PPM 145563     02:25:35.3 +09:48:12  7.7  0.67  83
PPM 145577     02:26:42.2 +08:48:42  9.1  0.42  83
12TE324        02:27:00.6 +09:13:42 14.6        84
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 12TE324, (2020/02/21 22:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 32.49 116
Menkar         03:02:16.8 +04:05:21  2.5 10.34  90
73Xi 2Cet      02:28:09.6 +08:27:36  4.3  0.87  84
PPM 145563     02:24:30.6 +09:42:46  7.7  0.67  83
PPM 145577     02:25:37.8 +08:43:18  9.1  0.42  83
12TE324        02:25:56.1 +09:08:18 14.6        83
Positions are for J2000

Event circumstances last updated at 2019/07/02 02:30:31 UT

Marc W. Buie, Southwest Research Institute

RECON