RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star GA1160:02107030 with event index number of 1105588

Geocentric closest approach at 2021/09/01 01:09:07 UTC

J2000 position of star is 06:16:22.8 +27:21:15
Equinox of date position of star is 06:17:44.3 +27:20:43
Stellar brightness G=13.9, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 6 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=22.3

TNO is 30.1 AU from the Sun and 30.5 AU from the Earth.
The TNO is moving 18.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 272 seconds.
The 1-sigma cross-track error in the shadow position is 1427 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=204.2 km assuming a 5% albedo -- 11.3 sec chord
Diameter=83.4 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15875, (2021/09/01 01:11UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:38.4 +27:58:20  1.1 19.67  26
Alnath         05:27:39.8 +28:37:25  1.6 11.12   6
44Kap Aur      06:16:45.5 +29:29:17  4.3  2.15   7
PPM 095737     06:19:42.2 +27:11:59  7.8  0.46   7
PPM 095711     06:18:41.5 +27:16:52  9.7  0.22   6
PPM 095695     06:17:50.5 +27:12:57 10.2  0.13   6
15875          06:17:44.3 +27:20:43 13.9         6
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 15875, (2021/09/01 01:11UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 19.67  26
Alnath         05:26:17.5 +28:36:23  1.6 11.12   6
44Kap Aur      06:15:22.6 +29:29:47  4.3  2.15   7
PPM 095737     06:18:20.7 +27:12:35  7.8  0.46   7
PPM 095711     06:17:20.0 +27:17:26  9.7  0.22   6
PPM 095695     06:16:29.1 +27:13:30 10.2  0.13   6
15875          06:16:22.8 +27:21:15 13.9         6
Positions are for J2000

Event circumstances last updated at 2021/08/29 01:38:40 UT

Marc W. Buie, Southwest Research Institute

RECON