RECON: TNO occultation with 15KH162

Event between 15KH162 and star GA0880:04655499 with event index number of 1956168

Geocentric closest approach at 2023/06/27 12:36:06 UTC

J2000 position of star is 16:05:13.6 -01:01:51
Equinox of date position of star is 16:06:25.6 -01:05:33
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 43 degrees from the moon. Moon is 62% illuminated.
Apparent brightness V=21.9

Object is 61.1 AU from the Sun and 60.3 AU from the Earth.
Apparent velocity is 20.9 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 128 seconds.
The 1-sigma cross-track error in the shadow position is 2264 km.

The object has an absolute magnitude Hv=4.0
Diameter=946.3 km assuming a 5% albedo -- 45.4 sec chord
Diameter=386.3 km assuming a 30% albedo -- 18.5 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 15KH162, (2023/06/27 12:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.1 -26:28:55  0.9 26.06  51
1Del Oph       16:15:34.7 -03:45:11  2.7  3.50  45
PPM 199363     16:11:04.4 -03:31:37  5.0  2.69  44
PPM 179703     16:05:54.0 -01:13:23  8.3  0.19  43
15KH162        16:06:26.4 -01:05:36 15.7        44
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 15KH162, (2023/06/27 12:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 26.06  51
1Del Oph       16:14:20.7 -03:41:43  2.7  3.50  45
PPM 199363     16:09:50.5 -03:28:00  5.0  2.69  44
PPM 179703     16:04:41.2 -01:09:37  8.3  0.19  43
15KH162        16:05:13.6 -01:01:51 15.7        43
Positions are for J2000

Event circumstances last updated at 2023/03/25 02:59:29 UT

Marc W. Buie, Southwest Research Institute

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