RECON: TNO occultation with 11UC411

Event between 11UC411 and star GA1120:00380043 with event index number of 1024829

Geocentric closest approach at 2020/12/10 04:38:38 UTC

J2000 position of star is 03:14:30.1 +22:09:13
Equinox of date position of star is 03:15:36.5 +22:13:25
Stellar brightness G=12.5, use SENSEUP=16
Star is 144 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 29.8 AU from the Sun and 28.9 AU from the Earth.
The TNO is moving 21.1 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 121 seconds.
The 1-sigma cross-track error in the shadow position is 1279 km.
The sky-plane scale is 20949.8 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 7.2 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 11UC411, (2020/12/10 04:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.5 +16:32:59  0.8 20.00 127
44Zet Per      03:55:27.2 +31:56:39  2.8 13.12 131
58Zet Ari      03:16:06.6 +21:07:15  4.9  1.11 144
PPM 092277     03:12:32.4 +22:14:55  8.0  0.74 144
PPM 092309     03:15:03.2 +22:19:46  9.0  0.18 144
11UC411        03:15:43.0 +22:13:50 12.5       144
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 5.0 sigma about the mid-time.
The median site spacing is 18.6 km RECON observability=1.0 and success probability=22.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 04:38:55 -43.9 Dark Down 58.4 144.3 Up 04:28:19 - 04:49:31 -1048
Kelowna 04:38:54 -44.1 Dark Down 58.5 144.9 Up 04:28:18 - 04:49:30 -1055
Penticton 04:38:55 -44.1 Dark Down 58.8 144.3 Up 04:28:19 - 04:49:31 -1081
Okanagan Falls 04:38:56 -44.2 Dark Down 58.9 144.1 Up 04:28:20 - 04:49:32 -1096
Oliver 04:38:56 -44.2 Dark Down 59.0 144.0 Up 04:28:20 - 04:49:32 -1110
Anarchist Mountain Observatory 04:38:56 -44.4 Dark Down 59.3 144.1 Up 04:28:20 - 04:49:32 -1130
Oroville 04:38:56 -44.4 Dark Down 59.3 143.9 Up 04:28:20 - 04:49:32 -1134
Tonasket 04:38:57 -44.5 Dark Down 59.5 143.7 Up 04:28:21 - 04:49:33 -1154
Okanogan 04:38:58 -44.5 Dark Down 59.7 143.1 Up 04:28:22 - 04:49:34 -1178
Brewster 04:39:00 -44.4 Dark Down 59.8 142.5 Up 04:28:24 - 04:49:36 -1195
Manson/Chelan 04:39:01 -44.2 Dark Down 59.8 141.7 Up 04:28:25 - 04:49:37 -1201
Entiat 04:39:02 -44.2 Dark Down 60.0 141.3 Up 04:28:26 - 04:49:38 -1217
Wenatchee 04:39:03 -44.2 Dark Down 60.1 140.9 Up 04:28:27 - 04:49:39 -1236
Ellensburg 04:39:05 -44.2 Dark Down 60.4 140.1 Up 04:28:29 - 04:49:41 -1264
Yakima 04:39:06 -44.3 Dark Down 60.7 139.6 Up 04:28:30 - 04:49:42 -1298
Toppenish/White Swan 04:39:06 -44.5 Dark Down 60.9 139.6 Up 04:28:30 - 04:49:42 -1322
Goldendale 04:39:09 -44.3 Dark Down 61.1 138.3 Up 04:28:33 - 04:49:45 -1356
The Dalles 04:39:11 -44.1 Dark Down 61.1 137.4 Up 04:28:35 - 04:49:47 -1364
Pasco 04:39:03 -45.3 Dark Down 61.6 141.6 Up 04:28:27 - 04:49:39 -1373
George/Umatilla 04:39:04 -45.3 Dark Down 61.7 140.9 Up 04:28:28 - 04:49:40 -1396
PNWRO 04:39:03 -45.6 Dark Down 61.9 141.7 Up 04:28:27 - 04:49:39 -1402
Maupin 04:39:11 -44.3 Dark Down 61.5 137.1 Up 04:28:35 - 04:49:47 -1403
Madras/Culver 04:39:13 -44.4 Dark Down 61.9 136.3 Up 04:28:37 - 04:49:49 -1450
Sisters 04:39:15 -44.1 Dark Down 61.9 135.2 Up 04:28:39 - 04:49:51 -1464
Redmond 04:39:14 -44.4 Dark Down 62.1 135.8 Up 04:28:38 - 04:49:50 -1479
Bend 04:39:15 -44.4 Dark Down 62.2 135.3 Up 04:28:39 - 04:49:51 -1493
Oregon Observatory 04:39:16 -44.3 Dark Down 62.3 134.8 Up 04:28:40 - 04:49:52 -1504
La Pine/Gilchrist 04:39:17 -44.3 Dark Down 62.4 134.5 Up 04:28:41 - 04:49:53 -1520
North Lake 04:39:16 -44.8 Dark Down 63.0 134.9 Up 04:28:40 - 04:49:52 -1579
Chiloquin 04:39:21 -44.2 Dark Down 63.0 132.3 Up 04:28:45 - 04:49:57 -1606
Klamath Falls 04:39:21 -44.3 Dark Down 63.2 132.0 Up 04:28:45 - 04:49:57 -1639
Paisley 04:39:16 -45.2 Dark Down 63.6 134.7 Up 04:28:40 - 04:49:52 -1640
Tulelake 04:39:22 -44.6 Dark Down 63.6 132.1 Up 04:28:46 - 04:49:58 -1674
Lakeview 04:39:17 -45.4 Dark Down 64.0 134.3 Up 04:28:41 - 04:49:53 -1692
Cedarville 04:39:18 -45.6 Dark Down 64.6 133.6 Up 04:28:42 - 04:49:54 -1757
Fall River/Burney 04:39:24 -44.8 Dark Down 64.2 130.8 Up 04:28:48 - 04:50:00 -1758
Susanville 04:39:23 -45.4 Dark Down 65.1 131.1 Up 04:28:47 - 04:49:59 -1841
Greenville 04:39:25 -45.3 Dark Down 65.1 130.1 Up 04:28:49 - 04:50:01 -1856
Gimple 04:39:24 -45.3 Dark Down 65.1 130.3 Up 04:28:48 - 04:50:00 -1859
Quincy 04:39:25 -45.3 Dark Down 65.2 129.8 Up 04:28:49 - 04:50:01 -1874
Portola 04:39:24 -45.7 Dark Down 65.6 130.4 Up 04:28:48 - 04:50:00 -1903
Reno 04:39:22 -46.2 Dark Down 66.1 131.1 Up 04:28:46 - 04:49:58 -1950
Carson City 04:39:23 -46.3 Dark Down 66.4 130.5 Up 04:28:47 - 04:49:59 -1984
Gardnerville 04:39:23 -46.3 Dark Down 66.6 130.2 Up 04:28:47 - 04:49:59 -2008
Yerington 04:39:21 -46.8 Dark Down 66.9 131.3 Up 04:28:45 - 04:49:57 -2025
Hawthorne 04:39:21 -47.2 Dark Down 67.5 131.5 Up 04:28:45 - 04:49:57 -2087
Lee Vining 04:39:24 -46.9 Dark Down 67.6 129.5 Up 04:28:48 - 04:50:00 -2122
Tonopah 04:39:17 -48.4 Dark Down 68.6 133.3 Up 04:28:41 - 04:49:53 -2181
Bishop 04:39:22 -47.6 Dark Down 68.4 129.7 Up 04:28:46 - 04:49:58 -2204
Lone Pine 04:39:23 -47.9 Dark Down 69.1 128.9 Up 04:28:47 - 04:49:59 -2288
Beatty 04:39:18 -48.9 Dark Down 69.7 132.0 Up 04:28:42 - 04:49:54 -2307
CPSLO 04:39:36 -45.9 Dark Down 68.1 121.6 Up 04:29:00 - 04:50:12 -2315
Niwot 04:38:28 -56.8 Dark Down 71.6 165.8 Up 04:27:52 - 04:49:04 -2373
Indian Springs 04:39:15 -49.8 Dark Down 70.5 133.6 Up 04:28:39 - 04:49:51 -2376
SwRI 04:38:29 -56.8 Dark Down 71.7 165.4 Up 04:27:53 - 04:49:05 -2380
Henderson 04:39:13 -50.4 Dark Down 71.3 134.0 Up 04:28:37 - 04:49:49 -2452
Wildwood 04:39:31 -47.7 Dark Down 70.2 122.4 Up 04:28:55 - 04:50:07 -2508
Searchlight/Boulder City 04:39:14 -50.5 Dark Down 71.7 132.9 Up 04:28:38 - 04:49:50 -2510
Laughlin/Bullhead City 04:39:14 -50.8 Dark Down 72.1 133.0 Up 04:28:38 - 04:49:50 -2551
Patrick 04:39:10 -51.4 Dark Down 72.4 135.2 Up 04:28:34 - 04:49:46 -2553
Kingman/Dolan Springs 04:39:11 -51.3 Dark Down 72.4 134.3 Up 04:28:35 - 04:49:47 -2568
Mohave Valley 04:39:15 -50.9 Dark Down 72.3 132.4 Up 04:28:39 - 04:49:51 -2578
DCO 04:39:08 -52.0 Dark Down 73.0 136.2 Up 04:28:32 - 04:49:44 -2607
Idyllwild 04:39:25 -49.2 Dark Down 71.7 125.1 Up 04:28:49 - 04:50:01 -2613
Lake Havasu City 04:39:14 -51.1 Dark Down 72.7 132.0 Up 04:28:38 - 04:49:50 -2626
Parker 04:39:15 -51.2 Dark Down 73.0 131.3 Up 04:28:39 - 04:49:51 -2661
Blythe 04:39:17 -51.0 Dark Down 73.2 129.3 Up 04:28:41 - 04:49:53 -2702
Calipatria 04:39:22 -50.3 Dark Down 72.8 126.0 Up 04:28:46 - 04:49:58 -2716
Yuma 04:39:19 -51.0 Dark Down 73.7 126.8 Up 04:28:43 - 04:49:55 -2791

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 11UC411, (2020/12/10 04:39UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.00 127
44Zet Per      03:54:07.9 +31:53:01  2.8 13.12 131
58Zet Ari      03:14:54.1 +21:02:39  4.9  1.11 144
PPM 092277     03:11:19.5 +22:10:14  8.0  0.74 144
PPM 092309     03:13:50.2 +22:15:08  9.0  0.18 144
11UC411        03:14:30.1 +22:09:13 12.5       144
Positions are for J2000

Event circumstances last updated at 2019/01/29 03:56:13 UT

Marc W. Buie, Southwest Research Institute

RECON