RECON: TNO occultation with 578834

Event between (578834) 14GF54 and star GA0600:08042324 with event index number of 2552795

Geocentric closest approach at 2027/08/01 18:39:24 UTC

J2000 position of star is 15:57:52.7 -29:36:53
Equinox of date position of star is 15:59:20.1 -29:40:50
Stellar brightness G=13.4, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 123 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=22.4

Object is 33.3 AU from the Sun and 32.9 AU from the Earth.
Apparent velocity is 7.7 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 331 seconds.
The 1-sigma cross-track error in the shadow position is 2092 km.

The object has an absolute magnitude Hv=7.0
Diameter=236.6 km assuming a 5% albedo -- 31.3 sec chord
Diameter=96.6 km assuming a 30% albedo -- 12.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 578834, (2027/08/01 18:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.2 -26:29:27  0.9  7.65 130
7Del Sco       16:01:58.2 -22:41:53  2.3  7.01 123
PPM 294436     15:57:58.6 -31:51:52  6.5  2.20 123
PPM 264916     15:59:00.8 -30:04:27  8.4  0.40 123
578834         15:59:35.7 -29:41:32 13.4       124
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, (2027/08/01 18:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.65 130
7Del Sco       16:00:20.0 -22:37:19  2.3  7.01 123
PPM 294436     15:56:14.1 -31:47:09  6.5  2.20 123
PPM 264916     15:57:17.6 -29:59:47  8.4  0.40 123
578834         15:57:52.7 -29:36:53 13.4       123
Positions are for J2000

Event circumstances last updated at 2023/05/29 03:02:05 UT

Marc W. Buie, Southwest Research Institute

RECON