RECON: TNO occultation with 119473

Event between (119473) 01UO18 and star GA1160:01825108 with event index number of 2825837

Geocentric closest approach at 2029/08/23 06:54:02 UTC

J2000 position of star is 05:57:04.9 +26:15:07
Equinox of date position of star is 05:58:35.4 +26:15:12
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 128 degrees from the moon. Moon is 99% illuminated.
Apparent brightness V=22.8

Object is 28.3 AU from the Sun and 28.8 AU from the Earth.
Apparent velocity is 20.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 506 seconds.
The 1-sigma cross-track error in the shadow position is 1269 km.

The object has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.9 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 
 
 

Star training set for 119473, (2029/08/23 06:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:46.6 +07:24:36  0.4 18.85 127
Alnath         05:28:10.1 +28:37:47  1.6  7.22 121
139 Tau        05:59:50.1 +25:57:17  4.7  0.36 128
PPM 095183     06:00:43.1 +25:46:37  7.7  0.62 128
PPM 095159     06:00:09.7 +26:12:12  9.0  0.28 128
PPM 095150     05:59:46.3 +26:11:06 10.2  0.20 128
119473         05:58:55.6 +26:15:13 15.3       128
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 119473, (2029/08/23 06:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.85 127
Alnath         05:26:17.6 +28:36:23  1.6  7.22 121
139 Tau        05:57:59.6 +25:57:14  4.7  0.36 128
PPM 095183     05:58:52.8 +25:46:37  7.7  0.62 128
PPM 095159     05:58:19.1 +26:12:10  9.0  0.28 128
PPM 095150     05:57:55.7 +26:11:03 10.2  0.20 128
119473         05:57:04.9 +26:15:07 15.3       128
Positions are for J2000

Event circumstances last updated at 2024/03/21 22:36:55 UT

Marc W. Buie, Southwest Research Institute

RECON