RECON: TNO occultation with 14KD102

Event between 14KD102 and star GA0720:19048219 with event index number of 1144355

Geocentric closest approach at 2021/05/18 12:56:04 UTC

J2000 position of star is 18:00:47.9 -16:19:53
Equinox of date position of star is 18:02:00.7 -16:19:51
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 136 degrees from the moon. Moon is 37% illuminated.
TNO apparent brightness V=22.3

TNO is 30.8 AU from the Sun and 30.0 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 890 seconds.
The 1-sigma cross-track error in the shadow position is 4301 km.

The TNO has an absolute magnitude Hv=7.4
Diameter=200.5 km assuming a 5% albedo -- 10.7 sec chord
Diameter=81.8 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 14KD102, (2021/05/18 12:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.3 -26:28:39  0.9 23.50 117
35Eta Oph      17:11:36.3 -15:45:00  2.6 12.13 124
6 Sgr          18:02:37.7 -17:09:21  6.3  0.84 136
PPM 233879     18:01:26.8 -16:03:59  7.6  0.30 136
PPM 233883     18:01:37.1 -16:31:19  9.4  0.22 136
14KD102        18:02:02.0 -16:19:51 17.0       136
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 14KD102, (2021/05/18 12:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.50 117
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.13 124
6 Sgr          18:01:23.1 -17:09:25  6.3  0.84 136
PPM 233879     18:00:12.8 -16:04:00  7.6  0.30 136
PPM 233883     18:00:22.9 -16:31:21  9.4  0.22 136
14KD102        18:00:47.9 -16:19:53 17.0       136
Positions are for J2000

Event circumstances last updated at 2021/01/02 19:50:05 UT

Marc W. Buie, Southwest Research Institute

RECON