RECON: TNO occultation with 182222

Event between (182222) 00YU1 and star GA1080:00985083 with event index number of 360229

Geocentric closest approach at 2020/10/10 11:03:33 UTC

J2000 position of star is 05:23:06.6 +18:16:26
Equinox of date position of star is 05:24:16.1 +18:17:28
Stellar brightness G=13.9, use SENSEUP=64
Star is 32 degrees from the moon. Moon is 46% illuminated.
TNO apparent brightness V=23.5

[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 1113 seconds.
The 1-sigma cross-track error in the shadow position is 3310 km.
The sky-plane scale is 30608.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 24.5 sec chord
Diameter=93.5 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 182222, (2020/10/10 11:04UT)
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 0.8 sigma about the mid-time.
The median site spacing is 23.3 km RECON observability=1.0 and success probability=13.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 11:03:23 -30.1 Dark Up 55.9 154.5 Up 10:48:23 - 11:18:23 2501
Victoria 11:04:01 -33.2 Dark Up 56.2 146.9 Up 10:49:01 - 11:19:01 2478
Kelowna 11:03:25 -30.4 Dark Up 56.2 154.0 Up 10:48:25 - 11:18:25 2475
Summerland 11:03:28 -30.6 Dark Up 56.4 153.5 Up 10:48:28 - 11:18:28 2458
Penticton 11:03:29 -30.6 Dark Up 56.5 153.6 Up 10:48:29 - 11:18:29 2450
Oliver 11:03:30 -30.8 Dark Up 56.8 153.4 Up 10:48:30 - 11:18:30 2421
Anarchist Mountain Observatory 11:03:30 -30.7 Dark Up 57.0 153.6 Up 10:48:30 - 11:18:30 2401
Tonasket 11:03:33 -30.9 Dark Up 57.3 153.3 Up 10:48:33 - 11:18:33 2378
Okanogan 11:03:34 -31.2 Dark Up 57.5 152.8 Up 10:48:34 - 11:18:34 2354
Brewster 11:03:37 -31.4 Dark Up 57.7 152.3 Up 10:48:37 - 11:18:37 2337
Manson/Chelan 11:03:42 -31.7 Dark Up 57.8 151.6 Up 10:48:42 - 11:18:42 2330
Entiat 11:03:41 -31.8 Dark Up 58.0 151.3 Up 10:48:41 - 11:18:41 2314
Wenatchee 11:03:45 -32.0 Dark Up 58.2 150.9 Up 10:48:45 - 11:18:45 2296
Ellensburg 11:03:48 -32.3 Dark Up 58.5 150.3 Up 10:48:48 - 11:18:48 2267
Yakima 11:03:52 -32.5 Dark Up 58.8 149.9 Up 10:48:52 - 11:18:52 2233
Toppenish/White Swan 11:03:52 -32.5 Dark Up 59.1 150.0 Up 10:48:52 - 11:18:52 2210
Goldendale 11:03:57 -33.0 Dark Up 59.4 148.9 Up 10:48:57 - 11:18:57 2176
The Dalles 11:04:02 -33.3 Dark Up 59.5 148.1 Up 10:49:02 - 11:19:02 2168
Pasco 11:03:43 -31.8 Dark Up 59.6 152.1 Up 10:48:43 - 11:18:43 2162
PNWRO 11:03:43 -31.8 Dark Up 59.9 152.3 Up 10:48:43 - 11:18:43 2134
Maupin 11:04:03 -33.5 Dark Up 59.9 147.9 Up 10:49:03 - 11:19:03 2129
Sisters 11:04:11 -34.2 Dark Up 60.4 146.2 Up 10:49:11 - 11:19:11 2069
Redmond 11:04:09 -33.9 Dark Up 60.6 146.9 Up 10:49:09 - 11:19:09 2054
Bend 11:04:09 -34.1 Dark Up 60.7 146.5 Up 10:49:09 - 11:19:09 2040
Oregon Observatory 11:04:13 -34.3 Dark Up 60.8 146.1 Up 10:49:13 - 11:19:13 2029
La Pine/Gilchrist 11:04:14 -34.4 Dark Up 61.0 145.8 Up 10:49:14 - 11:19:14 2013
North Lake 11:04:13 -34.2 Dark Up 61.6 146.4 Up 10:49:13 - 11:19:13 1956
Paisley 11:04:13 -34.2 Dark Up 62.2 146.5 Up 10:49:13 - 11:19:13 1896
Klamath Falls 11:04:23 -35.2 Dark Up 62.0 143.8 Up 10:49:23 - 11:19:23 1895
Lakeview 11:04:13 -34.3 Dark Up 62.7 146.3 Up 10:49:13 - 11:19:13 1845
Cedarville 11:04:15 -34.4 Dark Up 63.3 145.9 Up 10:49:15 - 11:19:15 1781
Fall River/Burney 11:04:28 -35.4 Dark Up 63.2 143.2 Up 10:49:28 - 11:19:28 1777
Susanville 11:04:26 -35.2 Dark Up 64.0 143.8 Up 10:49:26 - 11:19:26 1696
Greenville 11:04:30 -35.5 Dark Up 64.1 142.9 Up 10:49:30 - 11:19:30 1681
Gimple 11:04:29 -35.4 Dark Up 64.1 143.1 Up 10:49:29 - 11:19:29 1678
Quincy 11:04:31 -35.6 Dark Up 64.3 142.7 Up 10:49:31 - 11:19:31 1662
Portola 11:04:27 -35.3 Dark Up 64.6 143.4 Up 10:49:27 - 11:19:27 1635
Reno 11:04:24 -35.0 Dark Up 65.1 144.3 Up 10:49:24 - 11:19:24 1589
Carson City 11:04:23 -35.1 Dark Up 65.4 143.9 Up 10:49:23 - 11:19:23 1556
Gardnerville 11:04:26 -35.1 Dark Up 65.6 143.7 Up 10:49:26 - 11:19:26 1532
Yerington 11:04:21 -34.7 Dark Up 65.8 145.0 Up 10:49:21 - 11:19:21 1517
Hawthorne 11:04:19 -34.5 Dark Up 66.4 145.4 Up 10:49:19 - 11:19:19 1456
Lee Vining 11:04:27 -35.0 Dark Up 66.7 143.7 Up 10:49:27 - 11:19:27 1420
Tonopah 11:04:09 -33.7 Dark Up 67.4 147.8 Up 10:49:09 - 11:19:09 1366
Bishop 11:04:23 -34.7 Dark Up 67.5 144.4 Up 10:49:23 - 11:19:23 1340
Beatty 11:04:11 -33.7 Dark Up 68.6 147.3 Up 10:49:11 - 11:19:11 1241
CPSLO 11:04:52 -37.1 Dark Up 68.0 136.7 Up 10:49:52 - 11:19:52 1224
Niwot 11:02:22 -24.4 Dark Up 68.2 177.9 Up 10:47:22 - 11:17:22 1194
SwRI 11:02:21 -24.5 Dark Up 68.3 177.6 Up 10:47:21 - 11:17:21 1186
Indian Springs 11:04:04 -33.0 Dark Up 69.3 149.4 Up 10:49:04 - 11:19:04 1174
Henderson 11:03:59 -32.6 Dark Up 70.1 150.3 Up 10:48:59 - 11:18:59 1100
Searchlight/Boulder City 11:04:03 -32.7 Dark Up 70.6 149.7 Up 10:49:03 - 11:19:03 1043
Wildwood 11:04:41 -35.9 Dark Up 70.0 138.9 Up 10:49:41 - 11:19:41 1037
Patrick 11:03:53 -31.9 Dark Up 71.0 152.3 Up 10:48:53 - 11:18:53 1002
Laughlin/Bullhead City 11:04:02 -32.5 Dark Up 71.0 150.2 Up 10:49:02 - 11:19:02 1002
Kingman/Dolan Springs 11:03:57 -32.1 Dark Up 71.2 151.5 Up 10:48:57 - 11:18:57 987
Mohave Valley 11:04:02 -32.6 Dark Up 71.2 149.8 Up 10:49:02 - 11:19:02 975
DCO 11:03:49 -31.5 Dark Up 71.6 153.8 Up 10:48:49 - 11:18:49 949
Idyllwild 11:04:27 -34.6 Dark Up 71.3 142.6 Up 10:49:27 - 11:19:27 936
Lake Havasu City 11:04:03 -32.5 Dark Up 71.7 149.9 Up 10:49:03 - 11:19:03 928
Parker 11:04:03 -32.6 Dark Up 72.0 149.4 Up 10:49:03 - 11:19:03 893
Blythe 11:04:08 -32.9 Dark Up 72.3 147.8 Up 10:49:08 - 11:19:08 852
Calipatria 11:04:20 -33.8 Dark Up 72.3 144.5 Up 10:49:20 - 11:19:20 836
George/Scottsdale 11:03:44 -30.8 Dark Up 73.3 155.6 Up 10:48:44 - 11:18:44 770
Yuma 11:04:13 -33.2 Dark Up 73.1 146.1 Up 10:49:13 - 11:19:13 763

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 11:04UT)
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 2019/10/12 19:04:56 UT

Marc W. Buie, Southwest Research Institute

RECON