RECON: TNO occultation with 470596

Event between (470596) 08NW4 and star GA1000:20073263 with event index number of 2776474

Geocentric closest approach at 2029/06/12 12:14:00 UTC

J2000 position of star is 22:28:46.6 +11:45:39
Equinox of date position of star is 22:29:57.3 +11:52:59
Stellar brightness G=16.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 101 degrees from the moon. Moon is 0% illuminated.
Apparent brightness V=21.5

Object is 36.8 AU from the Sun and 36.7 AU from the Earth.
Apparent velocity is 11.0 km/sec on the sky relative to the star, or, 1.5 arcsec/hr.
The 1-sigma error in the time of the event is 197 seconds.
The 1-sigma cross-track error in the shadow position is 2752 km.

The object has an absolute magnitude Hv=5.7
Diameter=424.6 km assuming a 5% albedo -- 39.6 sec chord
Diameter=173.4 km assuming a 30% albedo -- 16.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 470596, (2029/06/12 12:12UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:26.2 +45:23:12  1.3 40.58  99
Markab         23:06:13.8 +15:21:51  2.5  9.40  92
PPM 141560     22:34:06.8 +13:11:49  6.5  1.60 100
PPM 141482     22:29:34.9 +12:23:59  8.0  0.51 101
PPM 141522     22:32:04.3 +12:02:39  9.3  0.47 101
PPM 141506     22:31:09.1 +11:42:51 10.8  0.30 101
470596         22:30:14.0 +11:54:43 16.8       101
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 470596, (2029/06/12 12:12UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 40.58  99
Markab         23:04:45.8 +15:12:18  2.5  9.40  92
PPM 141560     22:32:39.6 +13:02:41  6.5  1.60 100
PPM 141482     22:28:07.7 +12:14:55  8.0  0.51 101
PPM 141522     22:30:36.9 +11:53:33  9.3  0.47 101
PPM 141506     22:29:41.7 +11:33:46 10.8  0.30 101
470596         22:28:46.6 +11:45:39 16.8       101
Positions are for J2000

Event circumstances last updated at 2023/10/28 01:11:23 UT

Marc W. Buie, Southwest Research Institute

RECON