RECON: TNO occultation with 05RH52

Event between 05RH52 and star GA1120:00027795 with event index number of 1959505

Geocentric closest approach at 2023/01/11 17:08:57 UTC

J2000 position of star is 00:12:56.6 +22:05:25
Equinox of date position of star is 00:14:04.2 +22:12:40
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 81% illuminated.
TNO apparent brightness V=23.7

TNO is 42.5 AU from the Sun and 42.6 AU from the Earth.
The TNO is moving 13.6 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 312 seconds.
The 1-sigma cross-track error in the shadow position is 3877 km.

The TNO has an absolute magnitude Hv=7.3
Diameter=192.3 km assuming a 5% albedo -- 15.0 sec chord
Diameter=78.5 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 
 
 

Star training set for 05RH52, (2023/01/11 17:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:13.1 +45:21:49  1.3 48.65 116
Algenib        00:14:25.5 +15:18:41  2.8  6.91 149
PPM 089549     00:16:07.7 +22:24:44  6.0  0.50 143
PPM 089528     00:14:55.1 +22:21:25  9.5  0.23 143
05RH52         00:14:08.1 +22:13:05 16.5       143
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 05RH52, (2023/01/11 17:09UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 48.65 116
Algenib        00:13:14.2 +15:11:01  2.8  6.91 149
PPM 089549     00:14:56.0 +22:17:03  6.0  0.50 143
PPM 089528     00:13:43.5 +22:13:45  9.5  0.23 143
05RH52         00:12:56.6 +22:05:25 16.5       143
Positions are for J2000

Event circumstances last updated at 2021/10/05 01:26:14 UT

Marc W. Buie, Southwest Research Institute

RECON