RECON: TNO occultation with 471165

Event between (471165) 10HE79 and star GA0720:08975948 with event index number of 2801647

Geocentric closest approach at 2029/07/18 03:41:30 UTC

J2000 position of star is 17:21:05.9 -16:45:53
Equinox of date position of star is 17:22:27.6 -16:47:11
Stellar brightness G=13.2, use SENSEUP=32 with the MallinCam and and exposure time of 500 milli-seconds with the QHY174 camera.
Star is 62 degrees from the moon. Moon is 45% illuminated.
Apparent brightness V=21.3

Object is 39.1 AU from the Sun and 38.3 AU from the Earth.
Apparent velocity is 19.5 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 124 seconds.
The 1-sigma cross-track error in the shadow position is 1459 km.

The object has an absolute magnitude Hv=5.3
Diameter=527.2 km assuming a 5% albedo -- 27.2 sec chord
Diameter=215.2 km assuming a 30% albedo -- 11.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 471165, (2029/07/18 03:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:13.4 -26:29:41  0.9 15.40  50
35Eta Oph      17:12:04.5 -15:45:34  2.6  2.78  59
PPM 232892     17:20:01.5 -16:20:27  5.9  0.81  61
PPM 232901     17:20:21.3 -16:03:31  8.1  0.94  61
PPM 232948     17:22:16.6 -16:56:16  9.2  0.19  61
471165         17:22:48.5 -16:47:31 13.2        62
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 471165, (2029/07/18 03:42UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 15.40  50
35Eta Oph      17:10:22.7 -15:43:29  2.6  2.78  59
PPM 232892     17:18:19.3 -16:18:42  5.9  0.81  61
PPM 232901     17:18:39.2 -16:01:47  8.1  0.94  61
PPM 232948     17:20:33.9 -16:54:37  9.2  0.19  61
471165         17:21:05.9 -16:45:53 13.2        62
Positions are for J2000

Event circumstances last updated at 2023/07/08 02:41:25 UT

Marc W. Buie, Southwest Research Institute

RECON