RECON: TNO occultation with 95HM5

Event between 95HM5 and star GA0720:06224039 with event index number of 2246742

Geocentric closest approach at 2022/06/30 00:12:40 UTC

J2000 position of star is 16:31:09.7 -17:23:31
Equinox of date position of star is 16:32:26.7 -17:26:19
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 140 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.5

TNO is 29.6 AU from the Sun and 28.7 AU from the Earth.
The TNO is moving 19.5 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 633 seconds.
The 1-sigma cross-track error in the shadow position is 1857 km.

The TNO has an absolute magnitude Hv=7.7
Diameter=170.6 km assuming a 5% albedo -- 8.7 sec chord
Diameter=69.7 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 95HM5, (2022/06/30 00:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.4 -26:28:48  0.9  9.05 142
8Bet1Sco       16:06:44.9 -19:51:55  2.6  6.55 135
8Phi Oph       16:32:25.8 -16:39:36  4.0  0.78 140
PPM 231799     16:32:56.8 -17:45:37  8.3  0.34 140
95HM5          16:32:27.6 -17:26:20 16.9       140
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 95HM5, (2022/06/30 00:13UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.05 142
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.55 135
8Phi Oph       16:31:08.3 -16:36:47  4.0  0.78 140
PPM 231799     16:31:38.7 -17:42:49  8.3  0.34 140
95HM5          16:31:09.7 -17:23:31 16.9       140
Positions are for J2000

Event circumstances last updated at 2022/04/02 01:11:52 UT

Marc W. Buie, Southwest Research Institute

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