RECON: TNO occultation with 182222

Event between (182222) 00YU1 and star GA1080:00985083 with event index number of 362665

Geocentric closest approach at 2020/10/10 11:05:06 UTC

J2000 position of star is 05:23:06.6 +18:16:26
Equinox of date position of star is 05:24:13.0 +18:17:25
Stellar brightness G=13.9, use SENSEUP=64
Star is 32 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 42.7 AU from the Sun and 42.2 AU from the Earth.
The TNO is moving 9.3 km/sec on the sky relative to the star, or, 1.1 arcsec/hr.
The 1-sigma error in the time of the event is 804 seconds.
The 1-sigma cross-track error in the shadow position is 2800 km.
The sky-plane scale is 30608.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=263.0 km assuming a 5% albedo -- 28.2 sec chord
Diameter=107.4 km assuming a 30% albedo -- 11.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 182222, (2020/10/10 11:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:06.9 +16:32:58  0.8 11.39  44
Alnath         05:27:36.4 +28:37:23  1.6 10.36  30
111 Tau        05:25:38.2 +17:24:04  5.5  0.94  32
PPM 120901     05:24:43.8 +18:37:08  8.4  0.34  32
PPM 120880     05:23:30.4 +18:13:51  9.7  0.20  33
182222         05:24:19.6 +18:17:31 13.9        32
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 1.1 sigma about the mid-time.
The median site spacing is 19.5 km RECON observability=1.0 and success probability=14.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 11:05:01 -30.3 Dark Up 56.3 154.2 Up 10:50:01 - 11:20:01 2989
Kelowna 11:04:56 -30.1 Dark Up 56.3 154.8 Up 10:49:56 - 11:19:56 2983
Penticton 11:05:00 -30.4 Dark Up 56.6 154.3 Up 10:50:00 - 11:20:00 2958
Okanagan Falls 11:05:00 -30.5 Dark Up 56.8 154.1 Up 10:50:00 - 11:20:00 2943
Oliver 11:05:01 -30.5 Dark Up 56.9 154.0 Up 10:50:01 - 11:20:01 2929
Anarchist Mountain Observatory 11:05:01 -30.5 Dark Up 57.1 154.3 Up 10:50:01 - 11:20:01 2909
Oroville 11:05:03 -30.6 Dark Up 57.2 154.1 Up 10:50:03 - 11:20:03 2905
Tonasket 11:05:05 -30.7 Dark Up 57.4 153.9 Up 10:50:05 - 11:20:05 2885
Okanogan 11:05:06 -30.9 Dark Up 57.7 153.5 Up 10:50:06 - 11:20:06 2862
Brewster 11:05:08 -31.2 Dark Up 57.8 152.9 Up 10:50:08 - 11:20:08 2845
Manson/Chelan 11:05:13 -31.5 Dark Up 57.9 152.2 Up 10:50:13 - 11:20:13 2838
Entiat 11:05:14 -31.6 Dark Up 58.1 151.9 Up 10:50:14 - 11:20:14 2822
Wenatchee 11:05:15 -31.8 Dark Up 58.3 151.6 Up 10:50:15 - 11:20:15 2803
Ellensburg 11:05:20 -32.1 Dark Up 58.6 150.9 Up 10:50:20 - 11:20:20 2775
Yakima 11:05:22 -32.3 Dark Up 58.9 150.6 Up 10:50:22 - 11:20:22 2741
Toppenish/White Swan 11:05:22 -32.3 Dark Up 59.2 150.7 Up 10:50:22 - 11:20:22 2718
Goldendale 11:05:29 -32.8 Dark Up 59.5 149.5 Up 10:50:29 - 11:20:29 2683
The Dalles 11:05:32 -33.1 Dark Up 59.6 148.7 Up 10:50:32 - 11:20:32 2675
Pasco 11:05:15 -31.6 Dark Up 59.7 152.8 Up 10:50:15 - 11:20:15 2669
George/Umatilla 11:05:19 -31.9 Dark Up 59.9 152.1 Up 10:50:19 - 11:20:19 2647
PNWRO 11:05:13 -31.5 Dark Up 60.0 153.0 Up 10:50:13 - 11:20:13 2641
Maupin 11:05:35 -33.2 Dark Up 60.0 148.5 Up 10:50:35 - 11:20:35 2636
Madras/Culver 11:05:38 -33.5 Dark Up 60.5 148.0 Up 10:50:38 - 11:20:38 2590
Sisters 11:05:43 -33.9 Dark Up 60.6 146.9 Up 10:50:43 - 11:20:43 2575
Redmond 11:05:40 -33.7 Dark Up 60.7 147.6 Up 10:50:40 - 11:20:40 2561
Bend 11:05:40 -33.9 Dark Up 60.9 147.1 Up 10:50:40 - 11:20:40 2547
Oregon Observatory 11:05:42 -34.0 Dark Up 61.0 146.7 Up 10:50:42 - 11:20:42 2536
La Pine/Gilchrist 11:05:45 -34.2 Dark Up 61.1 146.4 Up 10:50:45 - 11:20:45 2520
North Lake 11:05:43 -34.0 Dark Up 61.7 147.1 Up 10:50:43 - 11:20:43 2463
Chiloquin 11:05:54 -34.9 Dark Up 61.9 144.7 Up 10:50:54 - 11:20:54 2434
Paisley 11:05:44 -34.0 Dark Up 62.3 147.2 Up 10:50:44 - 11:20:44 2402
Klamath Falls 11:05:56 -34.9 Dark Up 62.2 144.5 Up 10:50:56 - 11:20:56 2401
Tulelake 11:05:54 -34.9 Dark Up 62.6 144.7 Up 10:50:54 - 11:20:54 2367
Lakeview 11:05:43 -34.0 Dark Up 62.8 147.0 Up 10:50:43 - 11:20:43 2351
Cedarville 11:05:48 -34.2 Dark Up 63.5 146.7 Up 10:50:48 - 11:20:48 2287
Fall River/Burney 11:06:00 -35.2 Dark Up 63.3 143.9 Up 10:51:00 - 11:21:00 2283
Susanville 11:05:56 -34.9 Dark Up 64.2 144.5 Up 10:50:56 - 11:20:56 2202
Greenville 11:05:59 -35.2 Dark Up 64.3 143.7 Up 10:50:59 - 11:20:59 2187
Gimple 11:06:00 -35.2 Dark Up 64.3 143.8 Up 10:51:00 - 11:21:00 2184
Quincy 11:06:02 -35.3 Dark Up 64.4 143.4 Up 10:51:02 - 11:21:02 2168
Portola 11:05:59 -35.0 Dark Up 64.8 144.2 Up 10:50:59 - 11:20:59 2141
Reno 11:05:54 -34.7 Dark Up 65.3 145.1 Up 10:50:54 - 11:20:54 2095
Carson City 11:05:57 -34.8 Dark Up 65.6 144.7 Up 10:50:57 - 11:20:57 2062
Gardnerville 11:05:57 -34.9 Dark Up 65.8 144.5 Up 10:50:57 - 11:20:57 2037
Yerington 11:05:53 -34.4 Dark Up 66.0 145.7 Up 10:50:53 - 11:20:53 2023
Hawthorne 11:05:51 -34.2 Dark Up 66.6 146.2 Up 10:50:51 - 11:20:51 1962
Lee Vining 11:05:56 -34.8 Dark Up 66.9 144.5 Up 10:50:56 - 11:20:56 1926
Tonopah 11:05:41 -33.4 Dark Up 67.6 148.7 Up 10:50:41 - 11:20:41 1872
Bishop 11:05:54 -34.4 Dark Up 67.7 145.2 Up 10:50:54 - 11:20:54 1846
Lone Pine 11:05:54 -34.4 Dark Up 68.5 144.9 Up 10:50:54 - 11:20:54 1763
Beatty 11:05:42 -33.4 Dark Up 68.8 148.2 Up 10:50:42 - 11:20:42 1747
CPSLO 11:06:24 -36.8 Dark Up 68.2 137.4 Up 10:51:24 - 11:21:24 1730
Niwot 11:03:53 -24.2 Dark Up 68.2 178.8 Up 10:48:53 - 11:18:53 1702
Indian Springs 11:05:34 -32.7 Dark Up 69.5 150.3 Up 10:50:34 - 11:20:34 1680
Henderson 11:05:31 -32.3 Dark Up 70.2 151.3 Up 10:50:31 - 11:20:31 1606
Searchlight/Boulder City 11:05:34 -32.4 Dark Up 70.7 150.7 Up 10:50:34 - 11:20:34 1549
Wildwood 11:06:11 -35.6 Dark Up 70.2 139.7 Up 10:51:11 - 11:21:11 1542
Patrick 11:05:25 -31.6 Dark Up 71.2 153.3 Up 10:50:25 - 11:20:25 1509
Laughlin/Bullhead City 11:05:33 -32.2 Dark Up 71.1 151.2 Up 10:50:33 - 11:20:33 1508
Kingman/Dolan Springs 11:05:28 -31.8 Dark Up 71.3 152.6 Up 10:50:28 - 11:20:28 1493
Mohave Valley 11:05:34 -32.3 Dark Up 71.4 150.8 Up 10:50:34 - 11:20:34 1482
DCO 11:05:20 -31.2 Dark Up 71.7 154.8 Up 10:50:20 - 11:20:20 1456
Idyllwild 11:05:57 -34.3 Dark Up 71.4 143.6 Up 10:50:57 - 11:20:57 1442
Lake Havasu City 11:05:34 -32.2 Dark Up 71.8 150.9 Up 10:50:34 - 11:20:34 1435
Parker 11:05:34 -32.3 Dark Up 72.2 150.5 Up 10:50:34 - 11:20:34 1399
Blythe 11:05:39 -32.6 Dark Up 72.5 148.8 Up 10:50:39 - 11:20:39 1358
Calipatria 11:05:50 -33.5 Dark Up 72.5 145.5 Up 10:50:50 - 11:20:50 1342
Yuma 11:05:44 -32.9 Dark Up 73.3 147.2 Up 10:50:44 - 11:20:44 1268

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 182222, (2020/10/10 11:05UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 11.39  44
Alnath         05:26:17.5 +28:36:23  1.6 10.36  30
111 Tau        05:24:25.7 +17:23:01  5.5  0.94  32
PPM 120901     05:23:30.6 +18:36:03  8.4  0.34  32
PPM 120880     05:22:17.5 +18:12:44  9.7  0.20  33
182222         05:23:06.6 +18:16:26 13.9        32
Positions are for J2000

Event circumstances last updated at 2018/11/30 19:43:51 UT

Marc W. Buie, Southwest Research Institute

RECON