RECON: TNO occultation with 95626

Event between (95626) 02GZ32 and star GA0680:27209390 with event index number of 2132157

Geocentric closest approach at 2022/07/29 15:11:51 UTC

J2000 position of star is 18:28:53.1 -20:45:09
Equinox of date position of star is 18:30:13.3 -20:44:12
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 140 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=19.5

TNO is 18.1 AU from the Sun and 17.2 AU from the Earth.
The TNO is moving 18.2 km/sec on the sky relative to the star, or, 5.2 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 818 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 13.8 sec chord
Diameter=102.6 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 95626, (2022/07/29 15:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.7 -26:28:49  0.9 27.89 114
Nunki          18:56:39.8 -26:16:00  2.0  8.20 146
21 Sgr         18:26:41.7 -20:31:39  4.1  0.85 139
PPM 268487     18:31:12.2 -20:56:10  8.3  0.30 140
PPM 268444     18:29:27.0 -20:47:43  9.9  0.19 140
95626          18:30:13.8 -20:44:11 16.1       140
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 95626, (2022/07/29 15:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.89 114
Nunki          18:55:15.9 -26:17:49  2.0  8.20 146
21 Sgr         18:25:21.1 -20:32:31  4.1  0.85 139
PPM 268487     18:29:51.3 -20:57:10  8.3  0.30 140
PPM 268444     18:28:06.2 -20:48:40  9.9  0.19 140
95626          18:28:53.1 -20:45:09 16.1       140
Positions are for J2000

Event circumstances last updated at 2022/06/06 23:51:19 UT

Marc W. Buie, Southwest Research Institute

RECON