RECON: TNO occultation with 03WA191

Event between 03WA191 and star GA1080:02457771 with event index number of 1184963

Geocentric closest approach at 2023/01/10 08:06:10 UTC

J2000 position of star is 06:51:47.7 +18:21:17
Equinox of date position of star is 06:53:08.4 +18:19:32
Stellar brightness G=16.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 90% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 32.9 AU from the Sun and 31.9 AU from the Earth.
Apparent velocity is 24.5 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 288 seconds.
The 1-sigma cross-track error in the shadow position is 2168 km.
The sky-plane scale is 23151.7 km/arcsec.

The object has an absolute magnitude Hv=8.3
Diameter=132.4 km assuming a 5% albedo -- 5.4 sec chord
Diameter=54.1 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 03WA191, (2023/01/10 08:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:43.4 +27:58:07  1.1 15.62  33
Alhena         06:39:02.5 +16:22:40  1.9  3.89  49
PPM 123009     06:47:42.2 +18:48:42  6.5  1.38  46
PPM 123122     06:51:35.0 +18:46:11  8.2  0.58  45
PPM 123180     06:53:37.0 +18:15:46  9.8  0.13  45
03WA191        06:53:08.5 +18:19:32 16.7        45
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 3.1 sigma about the mid-time.
The median site spacing is 31.0 km RECON observability=1.0 and success probability=13.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:05:27 -58.1 Dark Up 52.1 215.5 Up 07:50:27 - 08:20:27 -2618
Kamloops 08:06:04 -61.3 Dark Up 57.1 193.7 Up 07:51:04 - 08:21:04 -2926
Kelowna 08:06:01 -62.1 Dark Up 57.7 195.6 Up 07:51:01 - 08:21:01 -2992
Peachland 08:06:01 -62.2 Dark Up 57.9 195.1 Up 07:51:01 - 08:21:01 -3005
Summerland 08:06:01 -62.4 Dark Up 58.0 195.3 Up 07:51:01 - 08:21:01 -3018
Penticton 08:06:01 -62.4 Dark Up 58.1 195.6 Up 07:51:01 - 08:21:01 -3023
Oliver 08:06:01 -62.8 Dark Up 58.4 195.7 Up 07:51:01 - 08:21:01 -3056
Anarchist Mountain Observatory 08:06:00 -63.0 Dark Up 58.5 196.1 Up 07:51:00 - 08:21:00 -3070
Okanogan 08:06:00 -63.6 Dark Up 59.2 196.0 Up 07:51:00 - 08:21:00 -3133
Victoria 08:06:11 -63.3 Dark Up 59.6 189.0 Up 07:51:11 - 08:21:11 -3158
Brewster 08:06:00 -63.9 Dark Up 59.5 195.8 Up 07:51:00 - 08:21:00 -3161
Manson/Chelan 08:06:01 -64.1 Dark Up 59.8 195.2 Up 07:51:01 - 08:21:01 -3185
Wenatchee 08:06:01 -64.6 Dark Up 60.2 195.1 Up 07:51:01 - 08:21:01 -3232
Ellensburg 08:06:01 -65.0 Dark Up 60.7 194.9 Up 07:51:01 - 08:21:01 -3273
Yakima 08:06:01 -65.4 Dark Up 61.1 195.0 Up 07:51:01 - 08:21:01 -3313
Toppenish/White Swan 08:06:01 -65.6 Dark Up 61.3 195.4 Up 07:51:01 - 08:21:01 -3332
PNWRO 08:05:55 -66.0 Dark Up 61.3 198.5 Up 07:50:55 - 08:20:55 -3350
The Dalles 08:06:02 -66.4 Dark Up 62.2 194.3 Up 07:51:02 - 08:21:02 -3416
Maupin 08:06:02 -66.8 Dark Up 62.5 194.7 Up 07:51:02 - 08:21:02 -3455
Sisters 08:06:02 -67.6 Dark Up 63.5 194.1 Up 07:51:02 - 08:21:02 -3547
Bend 08:06:01 -67.9 Dark Up 63.7 194.8 Up 07:51:01 - 08:21:01 -3567
Oregon Observatory 08:06:02 -68.0 Dark Up 63.9 194.6 Up 07:51:02 - 08:21:02 -3586
Dunrhomin 08:05:06 -68.1 Dark Up 60.6 228.5 Up 07:50:06 - 08:20:06 -3701
Nikitin 08:05:06 -68.2 Dark Up 60.8 228.7 Up 07:50:06 - 08:20:06 -3719
Chiloquin 08:06:02 -69.3 Dark Up 65.2 194.4 Up 07:51:02 - 08:21:02 -3721
CU-SBO 08:05:06 -68.3 Dark Up 60.9 228.6 Up 07:50:06 - 08:20:06 -3727
Klamath Falls 08:06:02 -69.7 Dark Up 65.5 194.7 Up 07:51:02 - 08:21:02 -3754
Cedarville 08:05:56 -70.4 Dark Up 65.8 198.7 Up 07:50:56 - 08:20:56 -3805
Fall River/Burney 08:05:59 -70.9 Dark Up 66.6 196.3 Up 07:50:59 - 08:20:59 -3868
Gimple 08:05:57 -71.8 Dark Up 67.3 198.2 Up 07:50:57 - 08:20:57 -3954
Greenville 08:05:57 -71.8 Dark Up 67.4 198.0 Up 07:50:57 - 08:20:57 -3955
Quincy 08:05:57 -72.0 Dark Up 67.5 198.1 Up 07:50:57 - 08:20:57 -3975
Portola 08:05:56 -72.2 Dark Up 67.5 199.3 Up 07:50:56 - 08:20:56 -3982
Reno 08:05:53 -72.4 Dark Up 67.6 201.1 Up 07:50:53 - 08:20:53 -4001
Carson City 08:05:53 -72.8 Dark Up 68.0 201.5 Up 07:50:53 - 08:20:53 -4037
Yerington 08:05:51 -73.0 Dark Up 68.0 203.1 Up 07:50:51 - 08:20:51 -4049
Gardnerville 08:05:52 -73.0 Dark Up 68.2 201.8 Up 07:50:52 - 08:20:52 -4061
Hawthorne 08:05:48 -73.4 Dark Up 68.2 204.9 Up 07:50:48 - 08:20:48 -4089
Lee Vining 08:05:49 -74.0 Dark Up 68.9 204.3 Up 07:50:49 - 08:20:49 -4153
Bishop 08:05:46 -74.6 Dark Up 69.2 206.7 Up 07:50:46 - 08:20:46 -4205
Beatty 08:05:40 -74.9 Dark Up 69.0 211.2 Up 07:50:40 - 08:20:40 -4230
Patrick 08:05:29 -75.7 Dark Up 68.8 220.0 Up 07:50:29 - 08:20:29 -4339
Laughlin/Bullhead City 08:05:31 -76.1 Dark Up 69.4 218.8 Up 07:50:31 - 08:20:31 -4376
Lake Havasu City 08:05:29 -76.7 Dark Up 69.8 220.6 Up 07:50:29 - 08:20:29 -4442
George/Scottsdale 08:05:20 -76.5 Dark Up 68.9 227.2 Up 07:50:20 - 08:20:20 -4481
Wildwood 08:05:44 -77.9 Dark Up 72.1 210.6 Up 07:50:44 - 08:20:44 -4548
Idyllwild 08:05:37 -78.0 Dark Up 71.6 216.2 Up 07:50:37 - 08:20:37 -4558
Calipatria 08:05:32 -78.3 Dark Up 71.5 220.3 Up 07:50:32 - 08:20:32 -4604
Yuma 08:05:29 -78.4 Dark Up 71.3 223.2 Up 07:50:29 - 08:20:29 -4635

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 03WA191, (2023/01/10 08:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 15.62  33
Alhena         06:37:42.8 +16:23:57  1.9  3.89  49
PPM 123009     06:46:21.1 +18:50:16  6.5  1.38  46
PPM 123122     06:50:14.0 +18:47:53  8.2  0.58  45
PPM 123180     06:52:16.3 +18:17:31  9.8  0.13  45
03WA191        06:51:47.7 +18:21:17 16.7        45
Positions are for J2000

Event circumstances last updated at 2023/01/07 03:17:33 UT

Marc W. Buie, Southwest Research Institute

RECON