RECON: TNO occultation with 14KX101

Event between 14KX101 and star GA0700:09058037 with event index number of 1058149

Geocentric closest approach at 2021/02/23 04:28:28 UTC

J2000 position of star is 17:16:09.1 -19:56:13
Equinox of date position of star is 17:17:23.8 -19:57:32
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 156 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=22.8

TNO is 31.7 AU from the Sun and 32.0 AU from the Earth.
The TNO is moving 14.0 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 360 seconds.
The 1-sigma cross-track error in the shadow position is 1606 km.

The TNO has an absolute magnitude Hv=7.6
Diameter=185.4 km assuming a 5% albedo -- 13.2 sec chord
Diameter=75.7 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14KX101, (2021/02/23 04:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:42.4 -26:28:38  0.9 12.54 147
35Eta Oph      17:11:35.5 -15:44:59  2.6  4.43 153
40Xi Oph       17:22:16.5 -21:08:02  3.9  1.64 158
PPM 232820     17:16:08.6 -19:53:10  8.3  0.30 156
14KX101        17:17:24.2 -19:57:33 15.3       157
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 14KX101, (2021/02/23 04:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.54 147
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.43 153
40Xi Oph       17:21:00.7 -21:06:51  3.9  1.64 158
PPM 232820     17:14:53.6 -19:51:48  8.3  0.30 156
14KX101        17:16:09.1 -19:56:13 15.3       156
Positions are for J2000

Event circumstances last updated at 2021/01/18 21:47:03 UT

Marc W. Buie, Southwest Research Institute

RECON