RECON: TNO occultation with 14JE80

Event between 14JE80 and star GA0720:31032339 with event index number of 2486937

Geocentric closest approach at 2022/05/23 12:19:48 UTC

J2000 position of star is 19:10:51.1 -16:03:57
Equinox of date position of star is 19:12:07.4 -16:01:40
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 56 degrees from the moon. Moon is 42% illuminated.
TNO apparent brightness V=22.5

TNO is 18.5 AU from the Sun and 17.7 AU from the Earth.
The TNO is moving 12.6 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 416 seconds.
The 1-sigma cross-track error in the shadow position is 2645 km.

The TNO has an absolute magnitude Hv=9.7
Diameter=70.1 km assuming a 5% albedo -- 5.6 sec chord
Diameter=28.6 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 14JE80, (2022/05/23 12:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.0 -26:28:47  0.9 38.84  91
Nunki          18:56:39.1 -26:16:01  2.0 10.85  59
PPM 235507     19:08:09.3 -16:11:35  5.8  0.97  57
PPM 235609     19:12:22.6 -15:52:55  7.7  0.16  56
PPM 235611     19:12:28.8 -16:03:51  9.5  0.09  55
14JE80         19:12:08.1 -16:01:39 16.8        55
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 14JE80, (2022/05/23 12:20UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 38.84  91
Nunki          18:55:15.9 -26:17:49  2.0 10.85  59
PPM 235507     19:06:52.1 -16:13:46  5.8  0.97  57
PPM 235609     19:11:05.6 -15:55:14  7.7  0.16  56
PPM 235611     19:11:11.7 -16:06:09  9.5  0.09  55
14JE80         19:10:51.1 -16:03:57 16.8        56
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:02:32 UT

Marc W. Buie, Southwest Research Institute

RECON