RECON: TNO occultation with 523753

Event between (523753) 14WV508 and star GA1060:03440768 with event index number of 2614971

Geocentric closest approach at 2022/11/29 19:40:45 UTC

J2000 position of star is 11:55:50.3 +17:10:21
Equinox of date position of star is 11:56:58.6 +17:02:56
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 41% illuminated.
TNO apparent brightness V=21.8

TNO is 16.0 AU from the Sun and 16.3 AU from the Earth.
The TNO is moving 17.3 km/sec on the sky relative to the star, or, 5.3 arcsec/hr.
The 1-sigma error in the time of the event is 71 seconds.
The 1-sigma cross-track error in the shadow position is 1060 km.

The TNO has an absolute magnitude Hv=9.4
Diameter=78.7 km assuming a 5% albedo -- 4.5 sec chord
Diameter=32.1 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 
 
 

Star training set for 523753, (2022/11/29 19:41UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:35.4 +11:51:16  1.3 26.49 175
Denebola       11:50:13.7 +14:26:38  2.1  3.07 155
95 Leo         11:56:51.1 +15:31:09  5.5  1.53 154
PPM 128681     11:58:52.8 +17:20:25  7.1  0.53 153
PPM 128645     11:55:40.5 +17:27:18  9.1  0.52 154
PPM 128666     11:57:25.3 +17:00:17 11.0  0.11 154
523753         11:57:00.9 +17:02:42 16.8       153
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 523753, (2022/11/29 19:41UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 26.49 175
Denebola       11:49:02.8 +14:34:17  2.1  3.07 155
95 Leo         11:55:40.6 +15:38:48  5.5  1.53 154
PPM 128681     11:57:42.3 +17:28:04  7.1  0.53 153
PPM 128645     11:54:29.8 +17:34:57  9.1  0.52 154
PPM 128666     11:56:14.7 +17:07:56 11.0  0.11 154
523753         11:55:50.3 +17:10:21 16.8       154
Positions are for J2000

Event circumstances last updated at 2022/03/12 01:49:56 UT

Marc W. Buie, Southwest Research Institute

RECON