RECON: TNO occultation with 470443

Event between (470443) 07XV50 and star GA1240:01874912 with event index number of 2230868

Geocentric closest approach at 2024/12/02 23:11:19 UTC

J2000 position of star is 05:26:25.2 +35:05:15
Equinox of date position of star is 05:28:01.9 +35:06:24
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 170 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=21.3

Object is 47.2 AU from the Sun and 46.3 AU from the Earth.
Apparent velocity is 25.7 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 217 seconds.
The 1-sigma cross-track error in the shadow position is 2870 km.

The object has an absolute magnitude Hv=4.6
Diameter=717.8 km assuming a 5% albedo -- 27.9 sec chord
Diameter=293.0 km assuming a 30% albedo -- 11.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 
 
 

Star training set for 470443, (2024/12/02 23:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.2 +16:33:27  0.8 21.73 156
3Iot Aur       04:58:37.2 +33:12:11  2.7  6.38 165
PPM 070537     05:35:17.7 +34:44:27  6.1  1.52 171
PPM 070322     05:26:52.5 +34:52:30  7.6  0.34 169
470443         05:28:05.0 +35:06:26 16.5       170
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 470443, (2024/12/02 23:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 21.73 156
3Iot Aur       04:56:59.6 +33:09:58  2.7  6.38 165
PPM 070537     05:33:38.1 +34:43:32  6.1  1.52 171
PPM 070322     05:25:12.9 +34:51:16  7.6  0.34 169
470443         05:26:25.2 +35:05:15 16.5       169
Positions are for J2000

Event circumstances last updated at 2024/03/02 06:04:16 UT

Marc W. Buie, Southwest Research Institute

RECON