RECON: TNO occultation with 13JK64

Event between 13JK64 and star GA0700:11329721 with event index number of 2057069

Geocentric closest approach at 2024/02/17 07:52:25 UTC

J2000 position of star is 17:29:38.1 -19:39:41
Equinox of date position of star is 17:31:03.7 -19:40:43
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 162 degrees from the moon. Moon is 58% illuminated.
Apparent brightness V=23.5

Object is 34.9 AU from the Sun and 35.3 AU from the Earth.
Apparent velocity is 18.7 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 202 seconds.
The 1-sigma cross-track error in the shadow position is 1661 km.

The object has an absolute magnitude Hv=7.9
Diameter=157.0 km assuming a 5% albedo -- 8.4 sec chord
Diameter=64.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 
 
 

Star training set for 13JK64, (2024/02/17 07:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:53.5 -26:29:00  0.9 15.40 177
35Eta Oph      17:11:45.8 -15:45:11  2.6  6.04 164
PPM 233026     17:26:01.9 -18:27:58  6.4  1.70 163
PPM 266907     17:29:42.7 -20:58:54  8.3  1.34 163
PPM 233166     17:32:04.4 -19:34:27  9.1  0.26 162
13JK64         17:31:03.7 -19:40:43 16.9       162
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 13JK64, (2024/02/17 07:52UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.40 177
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.04 164
PPM 233026     17:24:37.1 -18:26:45  6.4  1.70 163
PPM 266907     17:28:16.2 -20:57:49  8.3  1.34 163
PPM 233166     17:30:38.8 -19:33:27  9.1  0.26 162
13JK64         17:29:38.1 -19:39:41 16.9       162
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:17:19 UT

Marc W. Buie, Southwest Research Institute

RECON