RECON: TNO occultation with 12GT41

Event between 12GT41 and star GA0940:04736060 with event index number of 1582924

Geocentric closest approach at 2020/06/18 10:28:29 UTC

J2000 position of star is 17:09:42.6 +05:56:44
Equinox of date position of star is 17:10:42.0 +05:55:17
Stellar brightness G=16.4, use SENSEUP=128
Star is 147 degrees from the moon. Moon is 8% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 16.4 AU from the Sun and 15.5 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 6.7 arcsec/hr.
The 1-sigma error in the time of the event is 64 seconds.
The 1-sigma cross-track error in the shadow position is 720 km.
The sky-plane scale is 11263.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=73.1 km assuming a 5% albedo -- 2.9 sec chord
Diameter=29.8 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 12GT41, (2020/06/18 10:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.9 -26:28:32  0.9 33.82 163
60Bet Oph      17:44:29.1 +04:33:37  2.8  8.52 142
PPM 163642     17:12:44.5 +07:52:17  6.3  2.01 146
PPM 163671     17:13:50.4 +06:01:31  8.4  0.78 147
PPM 163590     17:09:52.4 +05:41:17  9.5  0.31 148
PPM 163609     17:10:49.5 +05:45:55 11.6  0.16 147
12GT41         17:10:42.8 +05:55:16 16.4       147
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 25.9 km RECON observability=0.6 and success probability=0.0%
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 10:25:40 -9.5 NT Up 31.0 237.8 Up 10:19:51 - 10:31:29 5903
Kelowna 10:25:39 -9.8 NT Up 31.3 237.8 Up 10:19:50 - 10:31:28 5870
Peachland 10:25:40 -10.0 NT Up 31.5 237.6 Up 10:19:51 - 10:31:29 5861
Summerland 10:25:39 -10.1 NT Up 31.5 237.7 Up 10:19:50 - 10:31:28 5849
Penticton 10:25:39 -10.1 NT Up 31.5 237.9 Up 10:19:50 - 10:31:28 5843
Oliver 10:25:38 -10.4 NT Up 31.7 238.1 Up 10:19:49 - 10:31:27 5813
Anarchist Mountain Observatory 10:25:37 -10.5 NT Up 31.7 238.3 Up 10:19:48 - 10:31:26 5798
Tonasket 10:25:36 -10.8 NT Up 31.9 238.4 Up 10:19:47 - 10:31:25 5771
Victoria 10:25:46 -12.3 AT Down 34.2 234.6 Up 10:19:57 - 10:31:35 5762
Okanogan 10:25:36 -11.1 NT Down 32.2 238.5 Up 10:19:47 - 10:31:25 5743
Brewster 10:25:36 -11.4 NT Down 32.4 238.4 Up 10:19:47 - 10:31:25 5719
Manson/Chelan 10:25:36 -11.7 NT Down 32.7 238.2 Up 10:19:47 - 10:31:25 5702
Entiat 10:25:36 -11.9 NT Down 32.9 238.2 Up 10:19:47 - 10:31:25 5682
Wenatchee 10:25:36 -12.2 AT Down 33.1 238.3 Up 10:19:47 - 10:31:25 5660
Ellensburg 10:25:35 -12.6 AT Down 33.4 238.3 Up 10:19:46 - 10:31:24 5624
Yakima 10:25:35 -13.0 AT Down 33.6 238.5 Up 10:19:46 - 10:31:24 5588
Toppenish/White Swan 10:25:34 -13.1 AT Down 33.7 238.8 Up 10:19:45 - 10:31:23 5569
Pasco 10:25:30 -12.7 AT Down 33.0 240.0 Up 10:19:41 - 10:31:19 5557
PNWRO 10:25:29 -12.8 AT Down 33.0 240.4 Up 10:19:40 - 10:31:18 5534
Goldendale 10:25:34 -13.7 AT Down 34.2 238.7 Up 10:19:45 - 10:31:23 5520
The Dalles 10:25:34 -14.0 AT Down 34.5 238.5 Up 10:19:45 - 10:31:23 5501
Maupin 10:25:33 -14.4 AT Down 34.7 238.8 Up 10:19:44 - 10:31:22 5463
Sisters 10:25:33 -15.3 AT Down 35.5 238.9 Up 10:19:44 - 10:31:22 5384
Redmond 10:25:31 -15.2 AT Down 35.2 239.3 Up 10:19:42 - 10:31:20 5381
Bend 10:25:31 -15.4 AT Down 35.4 239.3 Up 10:19:42 - 10:31:20 5362
Oregon Observatory 10:25:31 -15.6 AT Down 35.6 239.2 Up 10:19:42 - 10:31:20 5347
La Pine/Gilchrist 10:25:31 -15.8 AT Down 35.7 239.3 Up 10:19:42 - 10:31:20 5328
North Lake 10:25:28 -15.9 AT Down 35.6 240.1 Up 10:19:39 - 10:31:17 5287
Paisley 10:25:26 -16.2 AT Down 35.6 240.8 Up 10:19:37 - 10:31:15 5235
Klamath Falls 10:25:29 -17.1 AT Down 36.6 239.9 Up 10:19:40 - 10:31:18 5194
Lakeview 10:25:25 -16.6 AT Down 35.8 241.3 Up 10:19:36 - 10:31:14 5188
Cedarville 10:25:23 -17.0 AT Down 36.0 241.9 Up 10:19:34 - 10:31:12 5126
Fall River/Burney 10:25:25 -18.0 AT Down 37.0 241.1 Up 10:19:36 - 10:31:14 5082
Susanville 10:25:23 -18.2 Dark Down 36.8 242.2 Up 10:19:34 - 10:31:12 5021
Niwot 10:24:43 -10.9 NT Up 26.0 254.9 Low 10:18:54 - 10:30:32 4997
Greenville 10:25:23 -18.5 Dark Down 37.1 242.1 Up 10:19:34 - 10:31:12 4995
Gimple 10:25:23 -18.5 Dark Down 37.1 242.1 Up 10:19:34 - 10:31:12 4995
SwRI 10:24:43 -11.0 NT Up 26.1 254.9 Low 10:18:54 - 10:30:32 4987
Quincy 10:25:22 -18.7 Dark Down 37.2 242.2 Up 10:19:33 - 10:31:11 4976
Portola 10:25:21 -18.6 Dark Down 37.0 242.7 Up 10:19:32 - 10:31:10 4963
Reno 10:25:18 -18.5 Dark Down 36.6 243.5 Up 10:19:29 - 10:31:07 4937
Carson City 10:25:17 -18.8 Dark Down 36.8 243.7 Up 10:19:28 - 10:31:06 4902
Yerington 10:25:15 -18.7 Dark Down 36.4 244.4 Up 10:19:26 - 10:31:04 4883
Gardnerville 10:25:17 -19.0 Dark Down 36.9 243.9 Up 10:19:28 - 10:31:06 4879
Hawthorne 10:25:13 -18.8 Dark Down 36.3 245.2 Up 10:19:24 - 10:31:02 4837
Tonopah 10:25:08 -18.6 Dark Down 35.5 246.7 Up 10:19:19 - 10:30:57 4791
Lee Vining 10:25:14 -19.5 Dark Down 36.8 245.1 Up 10:19:25 - 10:31:03 4783
Bishop 10:25:10 -19.7 Dark Down 36.6 246.1 Up 10:19:21 - 10:30:59 4723
Beatty 10:25:05 -19.3 Dark Down 35.6 247.8 Up 10:19:16 - 10:30:54 4677
Indian Springs 10:25:01 -19.0 Dark Down 34.9 248.9 Up 10:19:12 - 10:30:50 4644
Henderson 10:24:59 -19.1 Dark Down 34.6 249.8 Up 10:19:10 - 10:30:48 4590
Searchlight/Boulder City 10:24:58 -19.5 Dark Down 34.7 250.2 Up 10:19:09 - 10:30:47 4533
Patrick 10:24:54 -19.0 Dark Down 33.9 251.0 Up 10:19:05 - 10:30:43 4528
CPSLO 10:25:13 -22.4 Dark Down 39.1 245.7 Up 10:19:24 - 10:31:02 4522
Kingman/Dolan Springs 10:24:54 -19.2 Dark Down 34.2 251.0 Up 10:19:05 - 10:30:43 4506
Laughlin/Bullhead City 10:24:56 -19.5 Dark Down 34.6 250.6 Up 10:19:07 - 10:30:45 4503
DCO 10:24:52 -18.8 Dark Down 33.5 251.7 Up 10:19:03 - 10:30:41 4498
Mohave Valley 10:24:55 -19.7 Dark Down 34.7 250.8 Up 10:19:06 - 10:30:44 4476
Lake Havasu City 10:24:54 -19.9 Dark Down 34.6 251.3 Up 10:19:05 - 10:30:43 4436
Parker 10:24:53 -20.2 Dark Down 34.7 251.5 Up 10:19:04 - 10:30:42 4400
Wildwood 10:25:06 -22.4 Dark Down 38.0 248.3 Up 10:19:17 - 10:30:55 4398
Idyllwild 10:25:00 -21.7 Dark Down 36.7 250.0 Up 10:19:11 - 10:30:49 4361
George/Scottsdale 10:24:46 -19.2 Dark Down 32.9 253.5 Up 10:18:57 - 10:30:35 4358
Blythe 10:24:54 -20.7 Dark Down 35.1 251.6 Up 10:19:05 - 10:30:43 4347
Calipatria 10:24:55 -21.6 Dark Down 36.0 251.3 Up 10:19:06 - 10:30:44 4298
Yuma 10:24:51 -21.4 Dark Down 35.4 252.2 Up 10:19:02 - 10:30:40 4253

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 12GT41, (2020/06/18 10:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.82 163
60Bet Oph      17:43:28.3 +04:34:05  2.8  8.52 142
PPM 163642     17:11:45.3 +07:53:41  6.3  2.01 146
PPM 163671     17:12:50.3 +06:02:54  8.4  0.78 147
PPM 163590     17:08:52.2 +05:42:47  9.5  0.31 148
PPM 163609     17:09:49.2 +05:47:23 11.6  0.16 147
12GT41         17:09:42.6 +05:56:44 16.4       147
Positions are for J2000

Event circumstances last updated at 2020/03/10 21:38:11 UT

Marc W. Buie, Southwest Research Institute

RECON