RECON: TNO occultation with 02PR149

Event between 02PR149 and star GA0940:00097288 with event index number of 2714441

Geocentric closest approach at 2022/08/30 03:23:36 UTC

J2000 position of star is 01:05:06.7 +05:09:14
Equinox of date position of star is 01:06:14.6 +05:16:14
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 172 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=23.3

TNO is 41.7 AU from the Sun and 40.9 AU from the Earth.
The TNO is moving 17.9 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 234 seconds.
The 1-sigma cross-track error in the shadow position is 2628 km.

The TNO has an absolute magnitude Hv=7.0
Diameter=243.2 km assuming a 5% albedo -- 13.6 sec chord
Diameter=99.3 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 02PR149, (2022/08/30 03:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:53.9 -29:30:06  1.2 46.30 141
Algenib        00:14:24.3 +15:18:34  2.8 16.22 164
80 Psc         01:09:32.4 +05:46:09  5.5  0.95 171
77 Psc         01:06:59.7 +05:01:43  6.7  0.30 172
PPM 144234     01:05:43.6 +05:06:02  9.5  0.22 173
02PR149        01:06:17.2 +05:16:30 15.9       172
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 02PR149, (2022/08/30 03:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 46.30 141
Algenib        00:13:14.2 +15:11:01  2.8 16.22 164
80 Psc         01:08:21.8 +05:38:55  5.5  0.95 171
77 Psc         01:05:49.3 +04:54:27  6.7  0.30 172
PPM 144234     01:04:33.2 +04:58:46  9.5  0.22 173
02PR149        01:05:06.7 +05:09:14 15.9       172
Positions are for J2000

Event circumstances last updated at 2021/11/02 00:47:42 UT

Marc W. Buie, Southwest Research Institute

RECON