RECON: TNO occultation with 01QR297

Event between 01QR297 and star GA0820:22420641 with event index number of 999599

Geocentric closest approach at 2020/10/13 11:17:49 UTC

J2000 position of star is 23:14:50.3 -06:46:25
Equinox of date position of star is 23:15:52.9 -06:39:48
Stellar brightness G=16.9, use SENSEUP=128
Star is 167 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=26.4

TNO is 43.3 AU from the Sun and 42.5 AU from the Earth.
The TNO is moving 20.1 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 208 seconds.
The 1-sigma cross-track error in the shadow position is 3173 km.

The TNO has an absolute magnitude Hv=10.0
Diameter=275.4 km assuming a 5% albedo -- 3.0 sec chord
Diameter=112.4 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 
 
 

Star training set for 01QR297, (2020/10/13 11:18UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:47.7 -29:30:42  1.2 23.20 164
Markab         23:05:47.9 +15:19:03  2.5 22.12 149
92Chi Aqr      23:17:55.5 -07:36:46  4.2  1.08 167
PPM 207330     23:16:17.5 -06:00:30  7.7  0.66 166
PPM 207319     23:15:43.1 -06:38:38  9.4  0.05 167
01QR297        23:15:54.8 -06:39:36 16.9       166
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 01QR297, (2020/10/13 11:18UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:23  1.2 23.20 164
Markab         23:04:45.8 +15:12:18  2.5 22.12 149
92Chi Aqr      23:16:50.9 -07:43:36  4.2  1.08 167
PPM 207330     23:15:13.0 -06:07:19  7.7  0.66 166
PPM 207319     23:14:38.6 -06:45:27  9.4  0.05 167
01QR297        23:14:50.3 -06:46:25 16.9       166
Positions are for J2000

Event circumstances last updated at 2020/03/06 22:13:12 UT

Marc W. Buie, Southwest Research Institute

RECON