RECON: TNO occultation with 10JE215

Event between 10JE215 and star GA0720:26742127 with event index number of 2092117

Geocentric closest approach at 2024/07/02 19:09:51 UTC

J2000 position of star is 18:41:17.8 -17:28:53
Equinox of date position of star is 18:42:41.0 -17:27:26
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon. Moon is 12% illuminated.
Apparent brightness V=22.8

Object is 28.8 AU from the Sun and 27.8 AU from the Earth.
Apparent velocity is 22.7 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 549 seconds.
The 1-sigma cross-track error in the shadow position is 2644 km.

The object has an absolute magnitude Hv=8.3
Diameter=133.0 km assuming a 5% albedo -- 5.9 sec chord
Diameter=54.3 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10JE215, (2024/07/02 19:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.8 -26:29:03  0.9 31.76 172
Nunki          18:56:47.0 -26:15:51  2.0  9.39 140
PPM 234930     18:44:21.7 -19:15:31  6.1  1.84 141
PPM 234892     18:42:45.1 -17:02:58  8.3  0.41 141
PPM 234881     18:42:22.9 -17:14:22  9.4  0.23 141
10JE215        18:42:43.3 -17:27:23 15.5       141
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 10JE215, (2024/07/02 19:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 31.76 172
Nunki          18:55:15.9 -26:17:49  2.0  9.39 140
PPM 234930     18:42:55.1 -19:17:04  6.1  1.84 141
PPM 234892     18:41:19.9 -17:04:27  8.3  0.41 141
PPM 234881     18:40:57.6 -17:15:51  9.4  0.23 141
10JE215        18:41:17.8 -17:28:53 15.5       141
Positions are for J2000

Event circumstances last updated at 2023/11/07 05:30:36 UT

Marc W. Buie, Southwest Research Institute

RECON