RECON: TNO occultation with 523741

Event between (523741) 14TY85 and star GA1220:01331502 with event index number of 2743052

Geocentric closest approach at 2029/03/29 23:03:07 UTC

J2000 position of star is 04:54:34.8 +33:53:43
Equinox of date position of star is 04:56:09.3 +33:55:56
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 112 degrees from the moon. Moon is 100% illuminated.
Apparent brightness V=22.1

Object is 33.2 AU from the Sun and 33.6 AU from the Earth.
Apparent velocity is 17.0 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 144 seconds.
The 1-sigma cross-track error in the shadow position is 1515 km.

The object has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 16.6 sec chord
Diameter=112.4 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523741, (2029/03/29 23:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:36.1 +16:33:57  0.8 17.89 117
3Iot Aur       04:58:54.2 +33:12:34  2.7  0.89 111
PPM 069666     04:51:12.9 +32:38:12  6.0  1.71 113
PPM 069690     04:53:11.6 +34:08:25  8.4  0.71 112
PPM 069724     04:55:19.2 +33:58:40  9.7  0.25 112
523741         04:56:30.0 +33:56:25 15.7       111
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 523741, (2029/03/29 23:02UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 17.89 117
3Iot Aur       04:56:59.6 +33:09:58  2.7  0.89 111
PPM 069666     04:49:19.1 +32:35:16  6.0  1.71 113
PPM 069690     04:51:16.3 +34:05:34  8.4  0.71 112
PPM 069724     04:53:24.0 +33:55:54  9.7  0.25 112
523741         04:54:34.8 +33:53:43 15.7       112
Positions are for J2000

Event circumstances last updated at 2023/12/24 23:37:08 UT

Marc W. Buie, Southwest Research Institute

RECON