RECON: TNO occultation with 95626

Event between (95626) 02GZ32 and star GA0700:21766138 with event index number of 1056422

Geocentric closest approach at 2021/02/25 18:00:16 UTC

J2000 position of star is 18:17:01.1 -19:13:41
Equinox of date position of star is 18:18:15.8 -19:13:09
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 137 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=19.8

TNO is 18.0 AU from the Sun and 18.5 AU from the Earth.
The TNO is moving 21.5 km/sec on the sky relative to the star, or, 5.8 arcsec/hr.
The 1-sigma error in the time of the event is 88 seconds.
The 1-sigma cross-track error in the shadow position is 796 km.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 11.7 sec chord
Diameter=102.6 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 95626, (2021/02/25 18:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:42.5 -26:28:38  0.9 25.76 113
Nunki          18:56:34.5 -26:16:07  2.0 11.29 146
PPM 234244     18:16:45.4 -18:39:12  6.1  0.67 136
PPM 234281     18:18:14.5 -19:04:00  8.2  0.15 137
PPM 234288     18:18:32.7 -19:15:30  9.6  0.08 137
95626          18:18:16.0 -19:13:08 16.2       137
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, (2021/02/25 18:00UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.76 113
Nunki          18:55:15.9 -26:17:49  2.0 11.29 146
PPM 234244     18:15:30.8 -18:39:42  6.1  0.67 136
PPM 234281     18:16:59.7 -19:04:33  8.2  0.15 137
PPM 234288     18:17:17.8 -19:16:03  9.6  0.08 137
95626          18:17:01.1 -19:13:41 16.2       137
Positions are for J2000

Event circumstances last updated at 2021/02/06 20:38:27 UT

Marc W. Buie, Southwest Research Institute

RECON