RECON: TNO occultation with 07RZ326

Event between 07RZ326 and star GA1260:13528988 with event index number of 2029936

Geocentric closest approach at 2021/11/19 17:05:45 UTC

J2000 position of star is 23:23:16.8 +36:39:42
Equinox of date position of star is 23:24:20.3 +36:46:53
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 61 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=24.0

TNO is 35.4 AU from the Sun and 34.9 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 254 seconds.
The 1-sigma cross-track error in the shadow position is 5378 km.

The TNO has an absolute magnitude Hv=8.4
Diameter=125.3 km assuming a 5% albedo -- 6.6 sec chord
Diameter=51.2 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 07RZ326, (2021/11/19 17:06UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:10.7 +45:21:34  1.3 31.38  88
Scheat         23:04:50.3 +28:12:07  2.4  9.51  66
PPM 088721     23:20:28.1 +35:56:42  6.5  1.14  62
PPM 088798     23:25:47.4 +36:28:55  6.6  0.42  61
PPM 088765     23:23:35.4 +36:35:48  9.1  0.24  61
PPM 088781     23:24:40.2 +36:34:05 10.9  0.22  61
07RZ326        23:24:20.7 +36:46:55 15.1        61
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 07RZ326, (2021/11/19 17:06UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 31.38  88
Scheat         23:03:46.8 +28:05:01  2.4  9.51  66
PPM 088721     23:19:24.5 +35:49:30  6.5  1.14  62
PPM 088798     23:24:43.4 +36:21:42  6.6  0.42  61
PPM 088765     23:22:31.6 +36:28:35  9.1  0.24  61
PPM 088781     23:23:36.3 +36:26:52 10.9  0.22  61
07RZ326        23:23:16.8 +36:39:42 15.1        61
Positions are for J2000

Event circumstances last updated at 2021/10/03 01:34:58 UT

Marc W. Buie, Southwest Research Institute

RECON