RECON: TNO occultation with 00YE2

Event between 00YE2 and star GA1100:01633057 with event index number of 999153

Geocentric closest approach at 2020/11/17 21:58:43 UTC

J2000 position of star is 05:58:38.0 +20:42:34
Equinox of date position of star is 05:59:47.6 +20:42:36
Stellar brightness G=16.4, use SENSEUP=128
Star is 175 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=24.2

TNO is 38.3 AU from the Sun and 37.5 AU from the Earth.
The TNO is moving 20.0 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 2289 seconds.
The 1-sigma cross-track error in the shadow position is 4288 km.

The TNO has an absolute magnitude Hv=8.3
Diameter=133.7 km assuming a 5% albedo -- 6.7 sec chord
Diameter=54.6 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 
 
 

Star training set for 00YE2, (2020/11/17 21:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.2 +07:24:33  0.4 13.33 162
Alhena         06:38:55.1 +16:22:47  1.9 10.21 170
54Chi1Ori      05:55:37.2 +20:16:42  5.1  1.09 174
PPM 095130     05:58:22.8 +20:58:42  8.3  0.44 175
PPM 095174     05:59:58.0 +20:44:46  9.2  0.04 175
00YE2          05:59:52.8 +20:42:36 16.4       175
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 00YE2, (2020/11/17 21:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.33 162
Alhena         06:37:42.8 +16:23:57  1.9 10.21 170
54Chi1Ori      05:54:22.7 +20:16:32  5.1  1.09 174
PPM 095130     05:57:07.9 +20:58:38  8.3  0.44 175
PPM 095174     05:58:43.2 +20:44:45  9.2  0.04 175
00YE2          05:58:38.0 +20:42:34 16.4       175
Positions are for J2000

Event circumstances last updated at 2019/06/08 00:38:47 UT

Marc W. Buie, Southwest Research Institute

RECON