RECON: TNO occultation with 15875

Event between (15875) 96TP66 and star GA1160:02534954 with event index number of 1388093

Geocentric closest approach at 2024/09/09 04:46:43 UTC

J2000 position of star is 06:46:59.3 +26:28:24
Equinox of date position of star is 06:48:30.4 +26:26:42
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 133 degrees from the moon. Moon is 30% illuminated.
Apparent brightness V=22.5

Object is 31.0 AU from the Sun and 31.4 AU from the Earth.
Apparent velocity is 17.2 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 447 seconds.
The 1-sigma cross-track error in the shadow position is 2171 km.

The object has an absolute magnitude Hv=7.4
Diameter=204.2 km assuming a 5% albedo -- 11.8 sec chord
Diameter=83.4 km assuming a 30% albedo -- 4.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 15875, (2024/09/09 04:47UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:49.6 +27:57:52  1.1 13.04 121
Alhena         06:39:08.3 +16:22:34  1.9 10.30 133
37 Gem         06:56:49.7 +25:20:33  6.3  2.17 131
PPM 096583     06:50:42.7 +27:09:38  6.6  0.87 133
PPM 096535     06:48:42.8 +26:31:57  9.2  0.10 133
15875          06:48:31.3 +26:26:41 15.3       133
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, (2024/09/09 04:47UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 13.04 121
Alhena         06:37:42.8 +16:23:57  1.9 10.30 133
37 Gem         06:55:18.6 +25:22:33  6.3  2.17 131
PPM 096583     06:49:10.3 +27:11:25  6.6  0.87 133
PPM 096535     06:47:10.7 +26:33:40  9.2  0.10 133
15875          06:46:59.3 +26:28:24 15.3       133
Positions are for J2000

Event circumstances last updated at 2024/06/09 02:45:14 UT

Marc W. Buie, Southwest Research Institute

RECON