RECON: TNO occultation with 469704

Event between (469704) 05EZ296 and star GA0780:04445369 with event index number of 254249

Geocentric closest approach at 2020/04/16 17:00:27 UTC

J2000 position of star is 13:51:00.2 -11:35:48
Equinox of date position of star is 13:51:59.3 -11:41:15
Stellar brightness G=17.1, use SENSEUP=128
Star is 107 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=22.0

TNO is 34.0 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 160 seconds.
The 1-sigma cross-track error in the shadow position is 2226 km.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.4 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 469704, (2020/04/16 17:00UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:15.9 -11:16:00  1.0  6.34 113
86 Vir         13:47:01.4 -12:31:39  5.1  1.49 108
PPM 227990     13:55:13.0 -11:47:40  7.4  0.77 106
PPM 227914     13:51:42.3 -11:44:09  9.5  0.10 107
469704         13:52:05.2 -11:41:48 17.1       107
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 469704, (2020/04/16 17:00UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  6.34 113
86 Vir         13:45:56.3 -12:25:35  5.1  1.49 108
PPM 227990     13:54:07.9 -11:41:43  7.4  0.77 106
PPM 227914     13:50:37.3 -11:38:09  9.5  0.10 107
469704         13:51:00.2 -11:35:48 17.1       107
Positions are for J2000

Event circumstances last updated at 2018/06/12 19:59:34 UT

Marc W. Buie, Southwest Research Institute

RECON