RECON: TNO occultation with 14JU80

Event between 14JU80 and star GA0760:08702864 with event index number of 1110118

Geocentric closest approach at 2021/05/02 12:03:43 UTC

J2000 position of star is 17:41:08.8 -12:07:14
Equinox of date position of star is 17:42:19.6 -12:07:48
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 34 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=22.2

TNO is 43.2 AU from the Sun and 42.5 AU from the Earth.
The TNO is moving 16.9 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 812 seconds.
The 1-sigma cross-track error in the shadow position is 2036 km.

The TNO has an absolute magnitude Hv=5.8
Diameter=416.9 km assuming a 5% albedo -- 24.7 sec chord
Diameter=170.2 km assuming a 30% albedo -- 10.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14JU80, (2021/05/02 12:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.1 -26:28:39  0.9 22.12  46
35Eta Oph      17:11:36.2 -15:44:59  2.6  8.29  39
56Omi Ser      17:42:36.9 -12:53:05  4.4  0.76  33
PPM 233417     17:41:05.3 -11:28:34  8.5  0.72  34
PPM 233453     17:42:33.0 -12:01:32  9.3  0.12  34
14JU80         17:42:20.5 -12:07:48 13.6        33
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 14JU80, (2021/05/02 12:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.12  46
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.29  39
56Omi Ser      17:41:24.8 -12:52:32  4.4  0.76  33
PPM 233417     17:39:53.9 -11:27:58  8.5  0.72  34
PPM 233453     17:41:21.3 -12:00:58  9.3  0.12  34
14JU80         17:41:08.8 -12:07:14 13.6        34
Positions are for J2000

Event circumstances last updated at 2021/01/20 21:13:48 UT

Marc W. Buie, Southwest Research Institute

RECON