RECON: TNO occultation with 13UE15

Event between 13UE15 and star GA1180:02349069 with event index number of 2645650

Geocentric closest approach at 2024/04/04 01:47:08 UTC

J2000 position of star is 06:18:49.8 +29:44:43
Equinox of date position of star is 06:20:22.2 +29:44:02
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 29% illuminated.
Apparent brightness V=22.7

Object is 24.9 AU from the Sun and 25.1 AU from the Earth.
Apparent velocity is 12.3 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is 1057 km.

The object has an absolute magnitude Hv=8.5
Diameter=121.9 km assuming a 5% albedo -- 9.9 sec chord
Diameter=49.8 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 13UE15, (2024/04/04 01:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:47.9 +27:57:56  1.1 18.98 163
Alnath         05:27:49.6 +28:37:33  1.6 11.52 133
PPM 095824     06:22:44.8 +29:31:39  6.3  0.55 145
PPM 095746     06:20:10.9 +29:46:11  7.1  0.06 144
13UE15         06:20:22.9 +29:44:02 15.7       145
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 13UE15, (2024/04/04 01:42UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 18.98 163
Alnath         05:26:17.6 +28:36:23  1.6 11.52 133
PPM 095824     06:21:11.9 +29:32:26  6.3  0.55 145
PPM 095746     06:18:37.8 +29:46:52  7.1  0.06 144
13UE15         06:18:49.8 +29:44:43 15.7       145
Positions are for J2000

Event circumstances last updated at 2024/01/30 03:20:21 UT

Marc W. Buie, Southwest Research Institute

RECON