RECON: TNO occultation with 578834

Event between (578834) 14GF54 and star GA0620:07176181 with event index number of 2552363

Geocentric closest approach at 2022/05/01 17:57:14 UTC

J2000 position of star is 15:19:08.9 -27:40:42
Equinox of date position of star is 15:20:27.5 -27:45:23
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.1

TNO is 32.7 AU from the Sun and 31.7 AU from the Earth.
The TNO is moving 23.1 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 122 seconds.
The 1-sigma cross-track error in the shadow position is 1387 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=236.6 km assuming a 5% albedo -- 10.3 sec chord
Diameter=96.6 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 578834, (2022/05/01 17:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:46.8 -26:28:47  0.9 15.68 161
7Del Sco       16:01:39.5 -22:41:01  2.3 10.60 169
PPM 264176     15:24:17.4 -26:46:02  6.5  1.30 171
PPM 264143     15:22:55.3 -28:00:08  8.4  0.59 170
PPM 264114     15:21:44.7 -27:45:34  9.7  0.28 170
578834         15:20:29.5 -27:45:30 16.7       170
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 578834, (2022/05/01 17:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.68 161
7Del Sco       16:00:20.0 -22:37:19  2.3 10.60 169
PPM 264176     15:22:57.1 -26:41:20  6.5  1.30 171
PPM 264143     15:21:34.4 -27:55:24  8.4  0.59 170
PPM 264114     15:20:24.0 -27:40:48  9.7  0.28 170
578834         15:19:08.9 -27:40:42 16.7       170
Positions are for J2000

Event circumstances last updated at 2021/10/12 02:08:37 UT

Marc W. Buie, Southwest Research Institute

RECON