RECON: TNO occultation with 98HO151

Event between 98HO151 and star UC4-478-055241 with event index number of 198399

Geocentric closest approach at 2019/06/08 13:40:58 UTC

J2000 position of star is 14:03:42.8 +05:27:12
Equinox of date position of star is 14:04:36.7 +05:22:04
Stellar brightness R=15.2, use SENSEUP=128
Star is 62 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=24.5

TNO is 44.2 AU from the Sun and 43.6 AU from the Earth.
The TNO is moving 15.9 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 969 seconds.
The 1-sigma cross-track error in the shadow position is 3710 km.

The TNO has an absolute magnitude Hv=8.0
Diameter=152.1 km assuming a 5% albedo -- 9.6 sec chord
Diameter=62.1 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 98HO151, (2019/06/08 13:41UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:33.0 +19:04:58  0.0 14.02  62
Vindemiatrix   13:03:08.7 +10:51:18  2.8 16.19  46
PPM 160305     14:04:54.4 +04:48:30  6.2  0.56  62
PPM 160294     14:04:19.1 +05:51:53  9.6  0.51  62
PPM 160308     14:05:03.2 +05:07:40 10.3  0.25  62
98HO151        14:04:41.3 +05:21:39 15.2        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 98HO151, (2019/06/08 13:41UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.3 +19:10:21  0.0 14.02  62
Vindemiatrix   13:02:10.3 +10:57:33  2.8 16.19  46
PPM 160305     14:03:55.7 +04:54:03  6.2  0.56  62
PPM 160294     14:03:20.7 +05:57:27  9.6  0.51  62
PPM 160308     14:04:04.7 +05:13:13 10.3  0.25  62
98HO151        14:03:42.8 +05:27:12 15.2        62
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:00:53 UT

Marc W. Buie, Southwest Research Institute

RECON