RECON: TNO occultation with 05VZ122

Event between 05VZ122 and star GA1040:01215538 with event index number of 238245

Geocentric closest approach at 2020/01/11 23:06:44 UTC

J2000 position of star is 05:51:22.3 +14:20:21
Equinox of date position of star is 05:52:28.7 +14:20:34
Stellar brightness G=14.9, use SENSEUP=128
Star is 40 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=22.8

TNO is 35.6 AU from the Sun and 34.7 AU from the Earth.
The TNO is moving 22.7 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 1418 seconds.
The 1-sigma cross-track error in the shadow position is 4765 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=205.1 km assuming a 5% albedo -- 9.0 sec chord
Diameter=83.7 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 05VZ122, (2020/01/11 23:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.4 +07:24:33  0.4  6.99  42
Bellatrix      05:26:12.4 +06:21:58  1.6 10.27  49
137 Tau        05:53:30.6 +14:10:31  5.5  0.29  40
PPM 121473     05:51:57.1 +14:26:51  6.7  0.17  40
05VZ122        05:52:30.8 +14:20:35 14.9        40
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 05VZ122, (2020/01/11 23:07UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.99  42
Bellatrix      05:25:07.8 +06:20:58  1.6 10.27  49
137 Tau        05:52:22.2 +14:10:18  5.5  0.29  40
PPM 121473     05:50:48.6 +14:26:36  6.7  0.17  40
05VZ122        05:51:22.3 +14:20:21 14.9        40
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:09:14 UT

Marc W. Buie, Southwest Research Institute

RECON