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 04:39:24 UTC

J2000 position of star is 03:14:30.1 +22:09:13
Equinox of date position of star is 03:15:37.4 +22:13:28
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 50 seconds.
The 1-sigma cross-track error in the shadow position is 1048 km.
The sky-plane scale is 20949.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=152.1 km assuming a 5% albedo -- 7.2 sec chord
Diameter=62.1 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  0.74 145
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 18.3 km RECON observability=1.0 and success probability=38.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:39:39 -44.2 Dark Down 58.6 145.2 Up 04:35:00 - 04:44:17 58
Summerland 04:39:40 -44.2 Dark Down 58.7 144.5 Up 04:35:02 - 04:44:19 41
Penticton 04:39:40 -44.2 Dark Down 58.8 144.6 Up 04:35:02 - 04:44:19 32
Okanagan Falls 04:39:41 -44.3 Dark Down 59.0 144.4 Up 04:35:02 - 04:44:19 17
Oliver 04:39:41 -44.4 Dark Down 59.1 144.3 Up 04:35:03 - 04:44:20 3
Anarchist Mountain Observatory 04:39:41 -44.5 Dark Down 59.3 144.4 Up 04:35:03 - 04:44:20 -17
Oroville 04:39:41 -44.5 Dark Down 59.4 144.2 Up 04:35:03 - 04:44:20 -21
Tonasket 04:39:42 -44.6 Dark Down 59.6 144.0 Up 04:35:04 - 04:44:21 -41
Okanogan 04:39:43 -44.6 Dark Down 59.8 143.4 Up 04:35:05 - 04:44:22 -65
Brewster 04:39:45 -44.5 Dark Down 59.9 142.8 Up 04:35:06 - 04:44:23 -82
Manson/Chelan 04:39:46 -44.4 Dark Down 59.9 142.0 Up 04:35:08 - 04:44:25 -88
Entiat 04:39:47 -44.4 Dark Down 60.1 141.6 Up 04:35:09 - 04:44:26 -105
Wenatchee 04:39:48 -44.4 Dark Down 60.2 141.2 Up 04:35:09 - 04:44:26 -124
Ellensburg 04:39:48 -44.3 Dark Down 60.5 140.4 Up 04:35:09 - 04:44:26 -160
Yakima 04:39:48 -44.4 Dark Down 60.8 139.9 Up 04:35:09 - 04:44:26 -201
Toppenish/White Swan 04:39:48 -44.6 Dark Down 61.0 139.9 Up 04:35:09 - 04:44:26 -224
Pasco 04:39:48 -45.5 Dark Down 61.6 142.0 Up 04:35:09 - 04:44:26 -261
Goldendale 04:39:48 -44.4 Dark Down 61.2 138.6 Up 04:35:09 - 04:44:26 -280
George/Umatilla 04:39:48 -45.4 Dark Down 61.8 141.2 Up 04:35:09 - 04:44:26 -285
PNWRO 04:39:47 -45.7 Dark Down 61.9 142.1 Up 04:35:09 - 04:44:26 -290
The Dalles 04:39:48 -44.2 Dark Down 61.2 137.7 Up 04:35:09 - 04:44:26 -306
Madras/Culver 04:39:58 -44.5 Dark Down 62.0 136.6 Up 04:35:20 - 04:44:37 -337
Maupin 04:39:48 -44.4 Dark Down 61.6 137.3 Up 04:35:09 - 04:44:26 -349
Sisters 04:40:00 -44.3 Dark Down 62.0 135.5 Up 04:35:22 - 04:44:39 -351
Redmond 04:39:59 -44.5 Dark Down 62.2 136.1 Up 04:35:21 - 04:44:38 -367
Bend 04:40:00 -44.5 Dark Down 62.3 135.6 Up 04:35:22 - 04:44:39 -381
Oregon Observatory 04:40:01 -44.4 Dark Down 62.4 135.1 Up 04:35:23 - 04:44:40 -392
La Pine/Gilchrist 04:40:02 -44.4 Dark Down 62.5 134.8 Up 04:35:23 - 04:44:40 -408
North Lake 04:40:01 -44.9 Dark Down 63.1 135.2 Up 04:35:23 - 04:44:40 -466
Chiloquin 04:40:06 -44.4 Dark Down 63.1 132.6 Up 04:35:28 - 04:44:45 -494
Klamath Falls 04:40:07 -44.5 Dark Down 63.3 132.3 Up 04:35:28 - 04:44:45 -527
Paisley 04:40:02 -45.3 Dark Down 63.7 135.0 Up 04:35:23 - 04:44:40 -528
Tulelake 04:40:06 -44.7 Dark Down 63.7 132.4 Up 04:35:28 - 04:44:45 -562
Lakeview 04:40:02 -45.5 Dark Down 64.1 134.6 Up 04:35:24 - 04:44:41 -580
Cedarville 04:40:03 -45.8 Dark Down 64.7 134.0 Up 04:35:25 - 04:44:42 -645
Fall River/Burney 04:40:09 -44.9 Dark Down 64.3 131.1 Up 04:35:30 - 04:44:47 -646
Susanville 04:40:08 -45.6 Dark Down 65.2 131.4 Up 04:35:29 - 04:44:46 -729
Greenville 04:40:10 -45.4 Dark Down 65.2 130.5 Up 04:35:31 - 04:44:48 -744
Gimple 04:40:09 -45.5 Dark Down 65.2 130.6 Up 04:35:31 - 04:44:48 -747
Quincy 04:40:10 -45.4 Dark Down 65.3 130.1 Up 04:35:32 - 04:44:49 -762
Portola 04:40:09 -45.8 Dark Down 65.7 130.7 Up 04:35:30 - 04:44:47 -791
Reno 04:40:07 -46.3 Dark Down 66.2 131.4 Up 04:35:29 - 04:44:46 -838
Carson City 04:40:08 -46.4 Dark Down 66.5 130.9 Up 04:35:29 - 04:44:46 -872
Gardnerville 04:40:09 -46.5 Dark Down 66.7 130.5 Up 04:35:30 - 04:44:47 -897
Yerington 04:40:06 -46.9 Dark Down 67.0 131.7 Up 04:35:28 - 04:44:45 -913
Hawthorne 04:40:06 -47.4 Dark Down 67.6 131.8 Up 04:35:27 - 04:44:44 -975
Lee Vining 04:40:09 -47.1 Dark Down 67.7 129.9 Up 04:35:30 - 04:44:47 -1010
Tonopah 04:40:02 -48.5 Dark Down 68.7 133.7 Up 04:35:23 - 04:44:40 -1069
Bishop 04:40:08 -47.7 Dark Down 68.5 130.1 Up 04:35:29 - 04:44:46 -1092
Lone Pine 04:40:08 -48.1 Dark Down 69.2 129.2 Up 04:35:30 - 04:44:47 -1177
Beatty 04:40:03 -49.0 Dark Down 69.8 132.4 Up 04:35:24 - 04:44:41 -1195
CPSLO 04:40:21 -46.1 Dark Down 68.3 121.9 Up 04:35:42 - 04:44:59 -1203
Niwot 04:39:13 -56.9 Dark Down 71.6 166.3 Up 04:34:35 - 04:43:52 -1260
Indian Springs 04:40:00 -49.9 Dark Down 70.6 134.0 Up 04:35:21 - 04:44:38 -1264
SwRI 04:39:14 -56.9 Dark Down 71.7 166.0 Up 04:34:35 - 04:43:52 -1267
Henderson 04:39:58 -50.6 Dark Down 71.4 134.4 Up 04:35:20 - 04:44:37 -1340
Wildwood 04:40:16 -47.8 Dark Down 70.3 122.8 Up 04:35:38 - 04:44:55 -1396
Searchlight/Boulder City 04:39:59 -50.7 Dark Down 71.8 133.3 Up 04:35:21 - 04:44:38 -1398
Laughlin/Bullhead City 04:39:59 -51.0 Dark Down 72.2 133.5 Up 04:35:20 - 04:44:37 -1439
Patrick 04:39:55 -51.5 Dark Down 72.5 135.7 Up 04:35:17 - 04:44:34 -1441
Kingman/Dolan Springs 04:39:57 -51.4 Dark Down 72.5 134.7 Up 04:35:18 - 04:44:35 -1456
Mohave Valley 04:39:59 -51.0 Dark Down 72.4 132.8 Up 04:35:21 - 04:44:38 -1466
DCO 04:39:48 -52.1 Dark Down 73.1 136.7 Up 04:35:09 - 04:44:26 -1500
Idyllwild 04:40:10 -49.4 Dark Down 71.8 125.5 Up 04:35:32 - 04:44:49 -1501
Lake Havasu City 04:39:59 -51.3 Dark Down 72.9 132.5 Up 04:35:21 - 04:44:38 -1514
Parker 04:40:00 -51.3 Dark Down 73.1 131.7 Up 04:35:21 - 04:44:38 -1549
Blythe 04:40:02 -51.1 Dark Down 73.3 129.7 Up 04:35:24 - 04:44:41 -1590
Calipatria 04:40:07 -50.4 Dark Down 73.0 126.4 Up 04:35:28 - 04:44:45 -1604
Yuma 04:40:05 -51.2 Dark Down 73.8 127.2 Up 04:35:26 - 04:44:43 -1680

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  0.74 145
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 2019/04/25 23:35:30 UT

Marc W. Buie, Southwest Research Institute

RECON