RECON: TNO occultation with 06HV122

Event between 06HV122 and star GA0620:07656345 with event index number of 1085924

Geocentric closest approach at 2021/05/30 11:42:16 UTC

J2000 position of star is 15:54:41.9 -26:39:17
Equinox of date position of star is 15:55:59.7 -26:42:58
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 62 degrees from the moon. Moon is 79% illuminated.
TNO apparent brightness V=23.0

TNO is 40.1 AU from the Sun and 39.1 AU from the Earth.
The TNO is moving 23.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 437 seconds.
The 1-sigma cross-track error in the shadow position is 5754 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=243.2 km assuming a 5% albedo -- 10.2 sec chord
Diameter=99.3 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 06HV122, (2021/05/30 11:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:43.4 -26:28:40  0.9  7.76  55
7Del Sco       16:01:36.2 -22:40:51  2.3  4.23  62
PPM 264761     15:51:52.5 -26:21:12  6.5  0.99  63
PPM 264868     15:57:00.1 -26:48:32  7.6  0.24  62
PPM 264857     15:56:29.2 -26:47:43 10.0  0.13  62
06HV122        15:56:00.1 -26:42:59 16.7        62
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 06HV122, (2021/05/30 11:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  7.76  55
7Del Sco       16:00:20.0 -22:37:18  2.3  4.23  62
PPM 264761     15:50:34.7 -26:17:23  6.5  0.99  63
PPM 264868     15:55:41.9 -26:44:52  7.6  0.24  62
PPM 264857     15:55:11.0 -26:44:02 10.0  0.13  62
06HV122        15:54:41.9 -26:39:17 16.7        62
Positions are for J2000

Event circumstances last updated at 2021/04/19 23:03:31 UT

Marc W. Buie, Southwest Research Institute

RECON