RECON: TNO occultation with 14FY71

Event between 14FY71 and star GA0700:05139552 with event index number of 1114097

Geocentric closest approach at 2021/06/12 03:43:29 UTC

J2000 position of star is 12:57:58.3 -19:28:30
Equinox of date position of star is 12:59:06.3 -19:35:22
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon. Moon is 3% illuminated.
TNO apparent brightness V=21.5

TNO is 39.6 AU from the Sun and 39.1 AU from the Earth.
The TNO is moving 12.0 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 138 seconds.
The 1-sigma cross-track error in the shadow position is 2504 km.

The TNO has an absolute magnitude Hv=5.4
Diameter=498.9 km assuming a 5% albedo -- 41.7 sec chord
Diameter=203.7 km assuming a 30% albedo -- 17.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 14FY71, (2021/06/12 03:44UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:19.6 -11:16:21  1.0 10.59 104
9Bet Crv       12:35:31.1 -23:30:54  2.6  6.74  98
PPM 261160     13:04:55.2 -20:41:53  5.5  1.76 103
PPM 226585     12:58:43.8 -19:51:57  8.5  0.29 101
PPM 226612     12:59:44.8 -19:35:58  9.4  0.15 101
14FY71         12:59:06.8 -19:35:26 16.4       101
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 14FY71, (2021/06/12 03:44UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 10.59 104
9Bet Crv       12:34:23.2 -23:23:49  2.6  6.74  98
PPM 261160     13:03:46.3 -20:35:00  5.5  1.76 103
PPM 226585     12:57:35.2 -19:45:01  8.5  0.29 101
PPM 226612     12:58:36.2 -19:29:03  9.4  0.15 101
14FY71         12:57:58.3 -19:28:30 16.4       101
Positions are for J2000

Event circumstances last updated at 2021/04/08 23:40:07 UT

Marc W. Buie, Southwest Research Institute

RECON