RECON: TNO occultation with 470443

Event between (470443) 07XV50 and star GA1220:01424459 with event index number of 1024236

Geocentric closest approach at 2020/12/18 05:14:26 UTC

J2000 position of star is 05:05:18.4 +33:12:45
Equinox of date position of star is 05:06:34.5 +33:14:16
Stellar brightness G=13.6, use SENSEUP=64
Star is 126 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 47.0 AU from the Sun and 46.0 AU from the Earth.
The TNO is moving 26.0 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 280 seconds.
The 1-sigma cross-track error in the shadow position is 3970 km.
The sky-plane scale is 33368.4 km/arcsec.

The TNO has an absolute magnitude Hv=4.4
Diameter=794.4 km assuming a 5% albedo -- 30.6 sec chord
Diameter=324.3 km assuming a 30% albedo -- 12.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 470443, (2020/12/18 05:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.6 +16:32:59  0.8 17.97 116
3Iot Aur       04:58:21.7 +33:11:50  2.7  1.74 124
14 Aur         05:16:46.4 +32:42:35  5.2  2.18 128
PPM 069915     05:07:31.2 +33:56:43  7.2  0.73 126
PPM 069882     05:05:31.8 +33:17:23  9.2  0.25 125
470443         05:06:40.7 +33:14:23 13.6       126
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 3.2 sigma about the mid-time.
The median site spacing is 22.6 km RECON observability=1.0 and success probability=6.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:15:30 -49.4 Dark Down 62.6 116.3 Up 05:00:30 - 05:30:30 -5875
Summerland 05:15:30 -49.3 Dark Down 62.6 115.4 Up 05:00:30 - 05:30:30 -5898
Penticton 05:15:30 -49.4 Dark Down 62.7 115.4 Up 05:00:30 - 05:30:30 -5907
Okanagan Falls 05:15:30 -49.5 Dark Down 62.7 115.1 Up 05:00:30 - 05:30:30 -5926
Oliver 05:15:30 -49.6 Dark Down 62.8 114.8 Up 05:00:30 - 05:30:30 -5942
Anarchist Mountain Observatory 05:15:30 -49.8 Dark Down 63.0 114.8 Up 05:00:30 - 05:30:30 -5964
Oroville 05:15:30 -49.7 Dark Down 63.0 114.5 Up 05:00:30 - 05:30:30 -5970
Tonasket 05:15:30 -49.8 Dark Down 63.1 114.1 Up 05:00:30 - 05:30:30 -5993
Okanogan 05:15:41 -49.9 Dark Down 63.1 113.4 Up 05:00:41 - 05:30:41 -6016
Brewster 05:15:43 -49.9 Dark Down 63.1 112.6 Up 05:00:43 - 05:30:43 -6038
Manson/Chelan 05:15:43 -49.8 Dark Down 63.0 111.8 Up 05:00:43 - 05:30:43 -6050
Entiat 05:15:45 -49.8 Dark Down 63.0 111.3 Up 05:00:45 - 05:30:45 -6070
Wenatchee 05:15:45 -49.8 Dark Down 63.1 110.7 Up 05:00:45 - 05:30:45 -6092
Ellensburg 05:15:46 -49.9 Dark Down 63.1 109.7 Up 05:00:46 - 05:30:46 -6127
Yakima 05:15:47 -50.0 Dark Down 63.2 108.9 Up 05:00:47 - 05:30:47 -6167
Toppenish/White Swan 05:15:47 -50.2 Dark Down 63.4 108.7 Up 05:00:47 - 05:30:47 -6193
Goldendale 05:15:49 -50.1 Dark Down 63.3 107.2 Up 05:00:49 - 05:30:49 -6237
Pasco 05:15:44 -51.0 Dark Down 64.2 110.0 Up 05:00:44 - 05:30:44 -6237
The Dalles 05:15:50 -49.9 Dark Down 63.1 106.4 Up 05:00:50 - 05:30:50 -6250
George/Umatilla 05:15:45 -51.0 Dark Down 64.2 109.1 Up 05:00:45 - 05:30:45 -6265
PNWRO 05:15:44 -51.3 Dark Down 64.5 109.8 Up 05:00:44 - 05:30:44 -6268
Maupin 05:15:51 -50.2 Dark Down 63.3 105.7 Up 05:00:51 - 05:30:51 -6294
Madras/Culver 05:15:51 -50.3 Dark Down 63.4 104.6 Up 05:00:51 - 05:30:51 -6348
Sisters 05:15:53 -50.1 Dark Down 63.2 103.5 Up 05:00:53 - 05:30:53 -6369
Redmond 05:15:53 -50.4 Dark Down 63.5 103.9 Up 05:00:53 - 05:30:53 -6382
Bend 05:15:54 -50.4 Dark Down 63.4 103.3 Up 05:00:54 - 05:30:54 -6400
Oregon Observatory 05:15:54 -50.3 Dark Down 63.4 102.8 Up 05:00:54 - 05:30:54 -6413
La Pine/Gilchrist 05:15:55 -50.3 Dark Down 63.4 102.4 Up 05:00:55 - 05:30:55 -6432
North Lake 05:15:54 -50.9 Dark Down 63.9 102.1 Up 05:00:54 - 05:30:54 -6493
Chiloquin 05:15:57 -50.4 Dark Down 63.3 99.9 Up 05:00:57 - 05:30:57 -6534
Paisley 05:15:54 -51.3 Dark Down 64.2 101.4 Up 05:00:54 - 05:30:54 -6558
Klamath Falls 05:15:57 -50.6 Dark Down 63.4 99.3 Up 05:00:57 - 05:30:57 -6571
Tulelake 05:15:57 -50.8 Dark Down 63.7 99.0 Up 05:00:57 - 05:30:57 -6607
Lakeview 05:15:54 -51.6 Dark Down 64.5 100.5 Up 05:00:54 - 05:30:54 -6615
Cedarville 05:15:55 -51.9 Dark Down 64.7 99.3 Up 05:00:55 - 05:30:55 -6686
Fall River/Burney 05:15:58 -51.1 Dark Down 63.9 97.3 Up 05:00:58 - 05:30:58 -6701
Susanville 05:15:58 -51.8 Dark Down 64.5 96.6 Up 05:00:58 - 05:30:58 -6787
Greenville 05:15:59 -51.7 Dark Down 64.3 95.8 Up 05:00:59 - 05:30:59 -6806
Gimple 05:15:58 -51.7 Dark Down 64.4 95.8 Up 05:00:58 - 05:30:58 -6809
Quincy 05:16:00 -51.7 Dark Down 64.4 95.4 Up 05:01:00 - 05:31:00 -6827
Portola 05:15:59 -52.1 Dark Down 64.7 95.5 Up 05:00:59 - 05:30:59 -6854
Reno 05:15:57 -52.7 Dark Down 65.3 95.4 Up 05:00:57 - 05:30:57 -6899
Carson City 05:15:58 -52.8 Dark Down 65.3 94.7 Up 05:00:58 - 05:30:58 -6937
Gardnerville 05:15:58 -52.8 Dark Down 65.4 94.2 Up 05:00:58 - 05:30:58 -6963
Yerington 05:15:56 -53.3 Dark Down 65.8 94.7 Up 05:00:56 - 05:30:56 -6975
Hawthorne 05:15:55 -53.8 Dark Down 66.3 94.1 Up 05:00:55 - 05:30:55 -7038
Lee Vining 05:15:58 -53.5 Dark Down 65.9 92.5 Up 05:00:58 - 05:30:58 -7082
Tonopah 05:15:51 -55.0 Dark Down 67.4 94.0 Up 05:00:51 - 05:30:51 -7125
Bishop 05:15:56 -54.2 Dark Down 66.5 91.6 Up 05:00:56 - 05:30:56 -7165
Niwot 05:15:14 -62.8 Dark Down 75.9 114.4 Up 05:00:14 - 05:30:14 -7179
SwRI 05:15:14 -62.8 Dark Down 75.9 113.8 Up 05:00:14 - 05:30:14 -7188
Lone Pine 05:15:56 -54.6 Dark Down 66.8 90.0 Up 05:00:56 - 05:30:56 -7253
Beatty 05:15:52 -55.6 Dark Down 67.8 91.6 Up 05:00:52 - 05:30:52 -7258
CPSLO 05:16:06 -52.8 Dark Down 64.7 85.8 Up 05:01:06 - 05:31:06 -7312
Indian Springs 05:15:50 -56.5 Dark Down 68.7 91.4 Up 05:00:50 - 05:30:50 -7322
Henderson 05:15:48 -57.1 Dark Down 69.2 90.5 Up 05:00:48 - 05:30:48 -7396
Searchlight/Boulder City 05:15:49 -57.3 Dark Down 69.3 89.0 Up 05:00:49 - 05:30:49 -7458
Patrick 05:15:46 -58.2 Dark Down 70.1 89.4 Up 05:00:46 - 05:30:46 -7491
Laughlin/Bullhead City 05:15:48 -57.7 Dark Down 69.6 88.4 Up 05:00:48 - 05:30:48 -7499
Wildwood 05:16:01 -54.6 Dark Down 66.2 84.0 Up 05:01:01 - 05:31:01 -7500
Kingman/Dolan Springs 05:15:46 -58.1 Dark Down 70.0 88.7 Up 05:00:46 - 05:30:46 -7510
Mohave Valley 05:15:49 -57.7 Dark Down 69.6 87.7 Up 05:00:49 - 05:30:49 -7528
DCO 05:15:44 -58.8 Dark Down 70.7 88.9 Up 05:00:44 - 05:30:44 -7542
Lake Havasu City 05:15:49 -58.0 Dark Down 69.7 86.7 Up 05:00:49 - 05:30:49 -7577
Idyllwild 05:15:57 -56.2 Dark Down 67.7 83.8 Up 05:00:57 - 05:30:57 -7592
Parker 05:15:49 -58.1 Dark Down 69.7 85.8 Up 05:00:49 - 05:30:49 -7615
Blythe 05:15:50 -57.9 Dark Down 69.5 84.2 Up 05:00:50 - 05:30:50 -7662
Calipatria 05:15:54 -57.3 Dark Down 68.6 82.7 Up 05:00:54 - 05:30:54 -7689
Yuma 05:15:51 -58.0 Dark Down 69.3 81.8 Up 05:00:51 - 05:30:51 -7759

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 470443, (2020/12/18 05:14UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 17.97 116
3Iot Aur       04:56:59.6 +33:09:58  2.7  1.74 124
14 Aur         05:15:24.3 +32:41:15  5.2  2.18 128
PPM 069915     05:06:08.4 +33:55:07  7.2  0.73 126
PPM 069882     05:04:09.5 +33:15:43  9.2  0.25 125
470443         05:05:18.4 +33:12:45 13.6       126
Positions are for J2000

Event circumstances last updated at 2019/05/23 22:51:53 UT

Marc W. Buie, Southwest Research Institute

RECON