RECON: TNO occultation with 10BK118

Event between 10BK118 and star GA0360:17482495 with event index number of 1090003

Geocentric closest approach at 2021/04/28 10:51:26 UTC

J2000 position of star is 15:07:09.7 -53:41:27
Equinox of date position of star is 15:08:43.4 -53:46:18
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 36 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=23.3

TNO is 19.8 AU from the Sun and 19.0 AU from the Earth.
The TNO is moving 32.8 km/sec on the sky relative to the star, or, 8.5 arcsec/hr.
The 1-sigma error in the time of the event is 70 seconds.
The 1-sigma cross-track error in the shadow position is 1001 km.

The TNO has an absolute magnitude Hv=10.2
Diameter=55.2 km assuming a 5% albedo -- 1.7 sec chord
Diameter=22.5 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 10BK118, (2021/04/28 10:51UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:41:03.9 -60:55:20  0.0  8.06  44
Alp Lup        14:43:21.5 -47:28:42  2.3  7.46  31
PPM 343490     15:12:52.2 -55:25:32  5.5  1.76  38
PPM 343448     15:10:17.4 -53:53:00  8.4  0.26  36
PPM 343426     15:09:11.4 -53:55:27  9.3  0.17  36
10BK118        15:08:43.7 -53:46:19 16.6        36
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 10BK118, (2021/04/28 10:51UT)
Object            RA         Dec     mag  sep  mel
PPM 360911     14:39:25.4 -60:49:53  0.0  8.06  44
Alp Lup        14:41:55.7 -47:23:18  2.3  7.46  31
PPM 343490     15:11:16.0 -55:20:46  5.5  1.76  38
PPM 343448     15:08:43.1 -53:48:10  8.4  0.26  36
PPM 343426     15:07:37.2 -53:50:37  9.3  0.17  36
10BK118        15:07:09.7 -53:41:27 16.6        36
Positions are for J2000

Event circumstances last updated at 2021/04/07 23:50:44 UT

Marc W. Buie, Southwest Research Institute

RECON