RECON: TNO occultation with 470316

Event between (470316) 07OC10 and star GA1020:19136796 with event index number of 2230428

Geocentric closest approach at 2023/07/05 23:32:36 UTC

J2000 position of star is 22:18:53.3 +12:57:15
Equinox of date position of star is 22:20:02.5 +13:04:21
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 35 degrees from the moon. Moon is 91% illuminated.
Apparent brightness V=21.0

Object is 36.6 AU from the Sun and 36.1 AU from the Earth.
Apparent velocity is 13.7 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 111 seconds.
The 1-sigma cross-track error in the shadow position is 1370 km.

The object has an absolute magnitude Hv=5.2
Diameter=532.1 km assuming a 5% albedo -- 39.2 sec chord
Diameter=217.2 km assuming a 30% albedo -- 16.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 470316, (2023/07/05 23:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:14.1 +45:21:55  1.3 38.38  66
Markab         23:05:56.0 +15:19:56  2.5 11.35  42
31 Peg         22:22:40.6 +12:19:28  5.0  0.99  34
PPM 141276     22:18:25.6 +13:01:02  7.5  0.40  35
PPM 141307     22:19:53.3 +13:03:27  9.3  0.04  35
470316         22:20:02.5 +13:04:22 17.0        35
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 470316, (2023/07/05 23:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 38.38  66
Markab         23:04:45.8 +15:12:18  2.5 11.35  42
31 Peg         22:21:31.1 +12:12:19  5.0  0.99  34
PPM 141276     22:17:16.4 +12:53:56  7.5  0.40  35
PPM 141307     22:18:44.1 +12:56:20  9.3  0.04  35
470316         22:18:53.3 +12:57:15 17.0        35
Positions are for J2000

Event circumstances last updated at 2023/07/04 04:00:37 UT

Marc W. Buie, Southwest Research Institute

RECON