RECON: TNO occultation with 471210

Event between (471210) 10VW11 and star GA0820:00413660 with event index number of 1003393

Geocentric closest approach at 2020/12/06 09:01:58 UTC

J2000 position of star is 04:40:30.7 -06:38:33
Equinox of date position of star is 04:41:29.7 -06:36:17
Stellar brightness G=15.1, use SENSEUP=128
Star is 81 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=25.7

[RECON map]
TNO is 36.7 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 195 seconds.
The 1-sigma cross-track error in the shadow position is 1470 km.
The sky-plane scale is 25982.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=524.8 km assuming a 5% albedo -- 2.5 sec chord
Diameter=214.3 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 471210, (2020/12/06 09:02UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:32.7 -08:10:44  0.1  8.58  73
67Bet Eri      05:08:52.8 -05:03:39  2.8  6.97  74
PPM 187086     04:35:15.4 -06:47:44  6.4  1.57  82
PPM 187205     04:42:06.2 -06:42:30  7.4  0.18  81
471210         04:41:32.0 -06:36:12 15.1        80
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 4.6 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=23.3%
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 09:00:42 -58.9 Dark Up 30.2 204.7 Up 08:45:42 - 09:15:42 1716
Kelowna 09:00:42 -59.3 Dark Up 30.6 204.7 Up 08:45:42 - 09:15:42 1692
Peachland 09:00:43 -59.5 Dark Up 30.8 204.3 Up 08:45:43 - 09:15:43 1688
Summerland 09:00:42 -59.6 Dark Up 30.9 204.5 Up 08:45:42 - 09:15:42 1677
Penticton 09:00:42 -59.6 Dark Up 30.9 204.6 Up 08:45:42 - 09:15:42 1672
Oliver 09:00:42 -59.9 Dark Up 31.2 204.7 Up 08:45:42 - 09:15:42 1649
Anarchist Mountain Observatory 09:00:41 -60.0 Dark Up 31.3 205.0 Up 08:45:41 - 09:15:41 1637
Victoria 09:00:52 -61.7 Dark Up 32.8 200.6 Up 08:45:52 - 09:15:52 1636
Tonasket 09:00:41 -60.2 Dark Up 31.6 205.0 Up 08:45:41 - 09:15:41 1617
Okanogan 09:00:41 -60.6 Dark Up 32.0 204.9 Up 08:45:41 - 09:15:41 1596
Brewster 09:00:41 -60.9 Dark Up 32.3 204.7 Up 08:45:41 - 09:15:41 1579
Manson/Chelan 09:00:42 -61.2 Dark Up 32.6 204.4 Up 08:45:42 - 09:15:42 1568
Entiat 09:00:42 -61.4 Dark Up 32.8 204.4 Up 08:45:42 - 09:15:42 1554
Wenatchee 09:00:42 -61.6 Dark Up 33.0 204.3 Up 08:45:42 - 09:15:42 1538
Ellensburg 09:00:42 -62.1 Dark Up 33.5 204.2 Up 08:45:42 - 09:15:42 1511
Yakima 09:00:42 -62.4 Dark Up 33.8 204.3 Up 08:45:42 - 09:15:42 1483
Toppenish/White Swan 09:00:41 -62.5 Dark Up 34.0 204.5 Up 08:45:41 - 09:15:41 1467
Pasco 09:00:37 -62.1 Dark Up 33.7 206.0 Up 08:45:37 - 09:15:37 1448
Goldendale 09:00:42 -63.1 Dark Up 34.6 204.2 Up 08:45:42 - 09:15:42 1432
PNWRO 09:00:37 -62.2 Dark Up 33.9 206.3 Up 08:45:37 - 09:15:37 1429
The Dalles 09:00:43 -63.5 Dark Up 34.9 203.8 Up 08:45:43 - 09:15:43 1419
Maupin 09:00:42 -63.8 Dark Up 35.3 204.1 Up 08:45:42 - 09:15:42 1389
Sisters 09:00:43 -64.7 Dark Up 36.2 203.7 Up 08:45:43 - 09:15:43 1331
Redmond 09:00:42 -64.5 Dark Up 36.1 204.2 Up 08:45:42 - 09:15:42 1325
Bend 09:00:42 -64.8 Dark Up 36.4 204.1 Up 08:45:42 - 09:15:42 1311
Oregon Observatory 09:00:42 -64.9 Dark Up 36.6 204.0 Up 08:45:42 - 09:15:42 1300
La Pine/Gilchrist 09:00:42 -65.1 Dark Up 36.8 204.0 Up 08:45:42 - 09:15:42 1285
North Lake 09:00:40 -65.2 Dark Up 37.0 204.8 Up 08:45:40 - 09:15:40 1248
Paisley 09:00:38 -65.5 Dark Up 37.4 205.4 Up 08:45:38 - 09:15:38 1204
Klamath Falls 09:00:42 -66.4 Dark Up 38.2 204.1 Up 08:45:42 - 09:15:42 1180
Lakeview 09:00:38 -65.8 Dark Up 37.8 205.8 Up 08:45:38 - 09:15:38 1164
Cedarville 09:00:36 -66.2 Dark Up 38.3 206.3 Up 08:45:36 - 09:15:36 1113
Fall River/Burney 09:00:40 -67.1 Dark Up 39.1 205.0 Up 08:45:40 - 09:15:40 1087
Susanville 09:00:37 -67.2 Dark Up 39.5 206.1 Up 08:45:37 - 09:15:37 1031
Greenville 09:00:38 -67.6 Dark Up 39.8 205.8 Up 08:45:38 - 09:15:38 1012
Gimple 09:00:38 -67.5 Dark Up 39.8 205.9 Up 08:45:38 - 09:15:38 1011
Quincy 09:00:38 -67.7 Dark Up 40.0 205.9 Up 08:45:38 - 09:15:38 996
Portola 09:00:36 -67.6 Dark Up 40.0 206.5 Up 08:45:36 - 09:15:36 982
Reno 09:00:34 -67.4 Dark Up 40.0 207.4 Up 08:45:34 - 09:15:34 955
Carson City 09:00:34 -67.6 Dark Up 40.3 207.6 Up 08:45:34 - 09:15:34 926
Gardnerville 09:00:33 -67.8 Dark Up 40.5 207.7 Up 08:45:33 - 09:15:33 906
Yerington 09:00:31 -67.4 Dark Up 40.2 208.4 Up 08:45:31 - 09:15:31 905
Hawthorne 09:00:29 -67.4 Dark Up 40.4 209.2 Up 08:45:29 - 09:15:29 862
Niwot 08:59:50 -57.8 Dark Up 33.1 223.2 Up 08:44:50 - 09:14:50 851
SwRI 08:59:50 -57.9 Dark Up 33.2 223.1 Up 08:44:50 - 09:14:50 843
Lee Vining 09:00:31 -68.1 Dark Up 41.1 208.9 Up 08:45:31 - 09:15:31 822
Tonopah 09:00:24 -66.8 Dark Up 40.3 211.1 Up 08:45:24 - 09:15:24 811
Bishop 09:00:27 -68.0 Dark Up 41.4 210.0 Up 08:45:27 - 09:15:27 765
Beatty 09:00:22 -67.2 Dark Up 41.1 212.2 Up 08:45:22 - 09:15:22 710
Indian Springs 09:00:18 -66.6 Dark Up 40.9 213.6 Up 08:45:18 - 09:15:18 672
Henderson 09:00:15 -66.4 Dark Up 41.0 214.6 Up 08:45:15 - 09:15:15 620
CPSLO 09:00:34 -70.7 Dark Up 44.0 208.1 Up 08:45:34 - 09:15:34 616
Searchlight/Boulder City 09:00:14 -66.7 Dark Up 41.5 215.0 Up 08:45:14 - 09:15:14 571
Patrick 09:00:11 -65.9 Dark Up 41.0 216.2 Up 08:45:11 - 09:15:11 555
Laughlin/Bullhead City 09:00:13 -66.5 Dark Up 41.6 215.5 Up 08:45:13 - 09:15:13 541
Kingman/Dolan Springs 09:00:11 -66.2 Dark Up 41.3 216.1 Up 08:45:11 - 09:15:11 538
DCO 09:00:08 -65.5 Dark Up 40.9 217.2 Up 08:45:08 - 09:15:08 521
Mohave Valley 09:00:13 -66.7 Dark Up 41.8 215.7 Up 08:45:13 - 09:15:13 518
Wildwood 09:00:26 -69.9 Dark Up 44.3 211.3 Up 08:45:26 - 09:15:26 492
Lake Havasu City 09:00:12 -66.7 Dark Up 42.0 216.2 Up 08:45:12 - 09:15:12 481
Parker 09:00:11 -66.8 Dark Up 42.3 216.4 Up 08:45:11 - 09:15:11 450
Idyllwild 09:00:19 -68.7 Dark Up 43.7 213.8 Up 08:45:19 - 09:15:19 442
Blythe 09:00:12 -67.2 Dark Up 42.8 216.3 Up 08:45:12 - 09:15:12 408
George/Scottsdale 09:00:03 -65.1 Dark Up 41.4 219.4 Up 08:45:03 - 09:15:03 386
Calipatria 09:00:15 -68.1 Dark Up 43.7 215.5 Up 08:45:15 - 09:15:15 375
Yuma 09:00:11 -67.6 Dark Up 43.6 216.8 Up 08:45:11 - 09:15:11 327

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 471210, (2020/12/06 09:02UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1  8.58  73
67Bet Eri      05:07:50.8 -05:05:13  2.8  6.97  74
PPM 187086     04:34:14.2 -06:50:17  6.4  1.57  82
PPM 187205     04:41:05.0 -06:44:51  7.4  0.18  81
471210         04:40:30.7 -06:38:33 15.1        81
Positions are for J2000

Event circumstances last updated at 2020/02/26 21:50:39 UT

Marc W. Buie, Southwest Research Institute

RECON