RECON: TNO occultation with 600181

Event between (600181) 11OC61 and star GA0740:32067315 with event index number of 2738077

Geocentric closest approach at 2022/10/12 05:23:37 UTC

J2000 position of star is 22:08:51.5 -14:54:51
Equinox of date position of star is 22:10:02.5 -14:48:21
Stellar brightness G=14.1, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 79 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 44.6 AU from the Sun and 43.9 AU from the Earth.
The TNO is moving 14.5 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 353 seconds.
The 1-sigma cross-track error in the shadow position is 2329 km.
The sky-plane scale is 31861.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=313.3 km assuming a 5% albedo -- 21.6 sec chord
Diameter=127.9 km assuming a 30% albedo -- 8.8 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 600181, (2022/10/12 05:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:54.3 -29:30:04  1.2 18.51  75
33Iot Aqr      22:07:39.9 -13:45:30  4.3  1.20  79
PPM 239822     22:08:49.1 -14:22:44  7.2  0.52  79
PPM 239881     22:11:02.8 -15:00:32  9.1  0.31  78
600181         22:10:05.3 -14:48:06 14.1        78
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 2.6 sigma about the mid-time.
The median site spacing is 16.3 km RECON observability=1.0 and success probability=10.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:21:07 -37.1 Dark Up 24.0 189.0 Low 05:06:07 - 05:36:07 -2409
Victoria 05:21:21 -37.0 Dark Up 26.4 185.9 Low 05:06:21 - 05:36:21 -2449
Peachland 05:21:03 -38.0 Dark Up 24.8 189.7 Low 05:06:03 - 05:36:03 -2467
Kelowna 05:21:02 -38.1 Dark Up 24.7 190.0 Low 05:06:02 - 05:36:02 -2468
Summerland 05:21:04 -38.1 Dark Up 25.0 189.8 Low 05:06:04 - 05:36:04 -2476
Penticton 05:21:03 -38.2 Dark Up 25.0 189.9 Low 05:06:03 - 05:36:03 -2482
Oliver 05:21:03 -38.5 Dark Up 25.4 189.9 Low 05:06:03 - 05:36:03 -2500
Anarchist Mountain Observatory 05:21:01 -38.7 Dark Up 25.5 190.1 Low 05:06:01 - 05:36:01 -2512
Tonasket 05:21:03 -38.9 Dark Up 25.8 190.1 Low 05:06:03 - 05:36:03 -2527
Okanogan 05:21:02 -39.0 Dark Up 26.2 189.9 Low 05:06:02 - 05:36:02 -2541
Brewster 05:21:04 -39.1 Dark Up 26.5 189.8 Low 05:06:04 - 05:36:04 -2551
Manson/Chelan 05:21:06 -39.0 Dark Up 26.7 189.4 Low 05:06:06 - 05:36:06 -2553
Wenatchee 05:21:06 -39.3 Dark Up 27.2 189.3 Low 05:06:06 - 05:36:06 -2575
Ellensburg 05:21:07 -39.4 Dark Up 27.6 189.1 Low 05:06:07 - 05:36:07 -2592
Yakima 05:21:07 -39.7 Dark Up 28.0 189.1 Low 05:06:07 - 05:36:07 -2613
Toppenish/White Swan 05:21:07 -39.9 Dark Up 28.2 189.3 Low 05:06:07 - 05:36:07 -2629
Goldendale 05:21:10 -40.0 Dark Up 28.8 188.9 Low 05:06:10 - 05:36:10 -2650
The Dalles 05:21:11 -40.0 Dark Up 29.1 188.5 Low 05:06:11 - 05:36:11 -2654
Sleaford 05:20:05 -41.6 Dark Up 20.2 203.4 Low 05:05:05 - 05:35:05 -2661
Pasco 05:21:00 -40.6 Dark Up 28.2 190.6 Low 05:06:00 - 05:36:00 -2665
Maupin 05:21:11 -40.3 Dark Up 29.5 188.6 Low 05:06:11 - 05:36:11 -2680
PNWRO 05:20:59 -40.9 Dark Up 28.4 190.9 Low 05:05:59 - 05:35:59 -2684
Sisters 05:21:13 -40.5 Dark Up 30.4 188.2 Up 05:06:13 - 05:36:13 -2718
Redmond 05:21:11 -40.8 Dark Up 30.4 188.6 Up 05:06:11 - 05:36:11 -2729
Bend 05:21:12 -40.8 Dark Up 30.6 188.5 Up 05:06:12 - 05:36:12 -2738
Oregon Observatory 05:21:13 -40.9 Dark Up 30.8 188.4 Up 05:06:13 - 05:36:13 -2745
La Pine/Gilchrist 05:21:13 -40.9 Dark Up 31.0 188.3 Up 05:06:13 - 05:36:13 -2755
North Lake 05:21:11 -41.5 Dark Up 31.4 189.0 Up 05:06:11 - 05:36:11 -2795
Chiloquin 05:21:15 -41.4 Dark Up 32.2 188.0 Up 05:06:15 - 05:36:15 -2813
Klamath Falls 05:21:15 -41.6 Dark Up 32.5 188.1 Up 05:06:15 - 05:36:15 -2836
Paisley 05:21:10 -42.1 Dark Up 31.9 189.5 Up 05:06:10 - 05:36:10 -2837
Lakeview 05:21:07 -42.5 Dark Up 32.4 189.7 Up 05:06:07 - 05:36:07 -2873
Fall River/Burney 05:21:15 -42.5 Dark Up 33.6 188.7 Up 05:06:15 - 05:36:15 -2918
Cedarville 05:21:07 -43.0 Dark Up 33.0 190.0 Up 05:06:07 - 05:36:07 -2918
Susanville 05:21:11 -43.3 Dark Up 34.1 189.6 Up 05:06:11 - 05:36:11 -2976
Greenville 05:21:12 -43.3 Dark Up 34.5 189.3 Up 05:06:12 - 05:36:12 -2987
Gimple 05:21:11 -43.4 Dark Up 34.4 189.4 Up 05:06:11 - 05:36:11 -2989
Quincy 05:21:12 -43.4 Dark Up 34.7 189.3 Up 05:06:12 - 05:36:12 -3000
Portola 05:21:09 -43.8 Dark Up 34.7 189.9 Up 05:06:09 - 05:36:09 -3020
Reno 05:21:06 -44.4 Dark Up 34.9 190.6 Up 05:06:06 - 05:36:06 -3054
Carson City 05:21:06 -44.6 Dark Up 35.2 190.7 Up 05:06:06 - 05:36:06 -3078
Gardnerville 05:21:07 -44.8 Dark Up 35.5 190.8 Up 05:06:07 - 05:36:07 -3095
Yerington 05:21:03 -45.1 Dark Up 35.3 191.5 Up 05:06:03 - 05:36:03 -3107
Hawthorne 05:21:01 -45.7 Dark Up 35.7 192.1 Up 05:06:01 - 05:36:01 -3153
Lee Vining 05:21:03 -45.7 Dark Up 36.3 191.7 Up 05:06:03 - 05:36:03 -3177
Tonopah 05:20:52 -46.8 Dark Up 35.9 193.8 Up 05:05:52 - 05:35:52 -3222
Bishop 05:20:59 -46.5 Dark Up 36.8 192.6 Up 05:05:59 - 05:35:59 -3238
Beatty 05:20:50 -47.8 Dark Up 37.0 194.6 Up 05:05:50 - 05:35:50 -3315
CPSLO 05:21:13 -46.1 Dark Up 39.2 190.2 Up 05:06:13 - 05:36:13 -3322
Indian Springs 05:20:45 -48.7 Dark Up 37.1 195.9 Up 05:05:45 - 05:35:45 -3369
Dunrhomin 05:19:50 -51.8 Dark Up 30.7 206.5 Up 05:04:50 - 05:34:50 -3410
Henderson 05:20:40 -49.4 Dark Up 37.4 196.8 Up 05:05:40 - 05:35:40 -3427
Wildwood 05:21:02 -48.2 Dark Up 40.0 192.9 Up 05:06:02 - 05:36:02 -3466
Laughlin/Bullhead City 05:20:38 -50.2 Dark Up 38.2 197.5 Up 05:05:38 - 05:35:38 -3502
Patrick 05:20:34 -50.5 Dark Up 37.7 198.2 Up 05:05:34 - 05:35:34 -3504
Kingman/Dolan Springs 05:20:35 -50.5 Dark Up 38.0 198.1 Up 05:05:35 - 05:35:35 -3515
Mohave Valley 05:20:39 -50.4 Dark Up 38.4 197.6 Up 05:05:39 - 05:35:39 -3522
Idyllwild 05:20:52 -49.6 Dark Up 40.0 195.3 Up 05:05:52 - 05:35:52 -3545
Lake Havasu City 05:20:38 -50.8 Dark Up 38.7 197.9 Up 05:05:38 - 05:35:38 -3559
Parker 05:20:38 -51.0 Dark Up 39.1 198.1 Up 05:05:38 - 05:35:38 -3586
Blythe 05:20:39 -51.1 Dark Up 39.6 197.8 Up 05:05:39 - 05:35:39 -3617
Calipatria 05:20:45 -50.8 Dark Up 40.3 196.9 Up 05:05:45 - 05:35:45 -3627
Yuma 05:20:40 -51.6 Dark Up 40.5 198.0 Up 05:05:40 - 05:35:40 -3686
George/Scottsdale 05:20:23 -52.9 Dark Up 38.8 201.0 Up 05:05:23 - 05:35:23 -3690

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 600181, (2022/10/12 05:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 18.51  75
33Iot Aqr      22:06:26.3 -13:52:12  4.3  1.20  79
PPM 239822     22:07:35.4 -14:29:27  7.2  0.52  79
PPM 239881     22:09:49.0 -15:07:17  9.1  0.31  78
600181         22:08:51.5 -14:54:51 14.1        79
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:03:59 UT

Marc W. Buie, Southwest Research Institute

RECON