RECON: TNO occultation with 03HM57

Event between 03HM57 and star GA0560:21565736 with event index number of 300390

Geocentric closest approach at 2020/05/05 04:42:01 UTC

J2000 position of star is 17:30:02.4 -33:44:53
Equinox of date position of star is 17:31:22.3 -33:45:44
Stellar brightness G=16.3, use SENSEUP=128
Star is 72 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=22.0

TNO is 15.5 AU from the Sun and 14.7 AU from the Earth.
The TNO is moving 14.1 km/sec on the sky relative to the star, or, 4.8 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 715 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=120.2 km assuming a 5% albedo -- 4.3 sec chord
Diameter=49.1 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 03HM57, (2020/05/05 04:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.5 -26:28:32  0.9 14.99  57
34Ups Sco      17:32:08.9 -37:18:36  2.7  3.55  73
PPM 296449     17:33:07.9 -33:43:01  6.4  0.37  72
PPM 296421     17:31:53.9 -33:40:07  8.5  0.14  72
PPM 296398     17:30:46.3 -33:46:33  8.6  0.13  72
03HM57         17:31:22.9 -33:45:45 16.3        72
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 03HM57, (2020/05/05 04:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.99  57
34Ups Sco      17:30:45.8 -37:17:46  2.7  3.55  73
PPM 296449     17:31:47.3 -33:42:12  6.4  0.37  72
PPM 296421     17:30:33.4 -33:39:16  8.5  0.14  72
PPM 296398     17:29:25.7 -33:45:40  8.6  0.13  72
03HM57         17:30:02.4 -33:44:53 16.3        72
Positions are for J2000

Event circumstances last updated at 2020/03/08 20:30:39 UT

Marc W. Buie, Southwest Research Institute

RECON