RECON: TNO occultation with 03HF57

Event between 03HF57 and star GA0700:05909591 with event index number of 2580105

Geocentric closest approach at 2023/06/14 21:25:02 UTC

J2000 position of star is 15:42:36.5 -19:58:10
Equinox of date position of star is 15:43:57.5 -20:02:32
Stellar brightness G=10.7, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 11% illuminated.
Apparent brightness V=24.1

Object is 35.3 AU from the Sun and 34.3 AU from the Earth.
Apparent velocity is 21.4 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 626 seconds.
The 1-sigma cross-track error in the shadow position is 3955 km.

The object has an absolute magnitude Hv=8.6
Diameter=115.3 km assuming a 5% albedo -- 5.4 sec chord
Diameter=47.1 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 03HF57, (2023/06/14 21:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.0 -26:28:55  0.9 12.54 155
7Del Sco       16:01:43.5 -22:41:12  2.3  4.91 162
43Kap Lib      15:43:18.1 -19:45:11  4.7  0.33 167
PPM 230612     15:43:16.4 -19:32:12  8.2  0.53 167
PPM 230624     15:43:46.0 -19:56:23  9.3  0.11 167
03HF57         15:43:58.0 -20:02:34 10.7       166
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 03HF57, (2023/06/14 21:25UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.54 155
7Del Sco       16:00:20.0 -22:37:19  2.3  4.91 162
43Kap Lib      15:41:56.7 -19:40:46  4.7  0.33 167
PPM 230612     15:41:55.2 -19:27:47  8.2  0.53 167
PPM 230624     15:42:24.5 -19:51:59  9.3  0.11 167
03HF57         15:42:36.5 -19:58:10 10.7       167
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:27:17 UT

Marc W. Buie, Southwest Research Institute

RECON