RECON: TNO occultation with 523622

Event between (523622) 07TG422 and star GA1040:01199623 with event index number of 2681657

Geocentric closest approach at 2029/01/13 23:37:33 UTC

J2000 position of star is 05:50:33.7 +15:16:16
Equinox of date position of star is 05:51:57.9 +15:16:34
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=22.8

Object is 42.5 AU from the Sun and 41.6 AU from the Earth.
Apparent velocity is 22.0 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 171 seconds.
The 1-sigma cross-track error in the shadow position is 2783 km.

The object has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 13.9 sec chord
Diameter=123.3 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 523622, (2029/01/13 23:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.7 +07:24:36  0.4  7.94 157
Bellatrix      05:26:41.4 +06:22:25  1.6 10.89 151
131 Tau        05:48:52.4 +14:29:48  5.7  1.12 160
PPM 121447     05:51:37.6 +14:53:12  8.1  0.42 160
PPM 121462     05:52:14.0 +15:30:55  8.9  0.24 161
523622         05:52:13.6 +15:16:37 16.7       161
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 523622, (2029/01/13 23:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  7.94 157
Bellatrix      05:25:07.8 +06:20:58  1.6 10.89 151
131 Tau        05:47:13.1 +14:29:18  5.7  1.12 160
PPM 121447     05:49:58.0 +14:52:49  8.1  0.42 160
PPM 121462     05:50:33.9 +15:30:33  8.9  0.24 161
523622         05:50:33.7 +15:16:16 16.7       161
Positions are for J2000

Event circumstances last updated at 2024/06/25 21:30:42 UT

Marc W. Buie, Southwest Research Institute

RECON