RECON: TNO occultation with 08JO41

Event between 08JO41 and star GA1080:06218085 with event index number of 273811

Geocentric closest approach at 2020/06/17 04:24:52 UTC

J2000 position of star is 18:48:39.3 +18:31:58
Equinox of date position of star is 18:49:32.5 +18:33:24
Stellar brightness G=17.0, use SENSEUP=128
Star is 111 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=26.2

[RECON map]
TNO is 41.4 AU from the Sun and 40.7 AU from the Earth.
The TNO is moving 23.0 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 545 seconds.
The 1-sigma cross-track error in the shadow position is 5727 km.
The sky-plane scale is 29499.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=123.6 km assuming a 5% albedo -- 2.6 sec chord
Diameter=50.5 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 08JO41, (2020/06/17 04:25UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:37.9 +38:48:13  0.0 20.41 105
Tarazed        19:47:13.9 +10:39:52  2.7 16.02  99
111 Her        18:47:55.5 +18:12:20  4.4  0.52 111
PPM 135209     18:47:35.2 +18:43:45  7.6  0.50 111
PPM 135267     18:49:44.8 +18:52:24  9.5  0.32 110
08JO41         18:49:33.3 +18:33:25 17.0       110
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 1.7 sigma about the mid-time.
The median site spacing is 25.5 km RECON observability=0.2 and success probability=1.3%
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 04:27:47 -2.9 CT Down 27.7 94.0 Low 04:12:47 - 04:42:47 11025
Kelowna 04:27:49 -3.1 CT Down 27.7 93.7 Low 04:12:49 - 04:42:49 10997
Peachland 04:27:49 -3.1 CT Down 27.5 93.4 Low 04:12:49 - 04:42:49 10994
Summerland 04:27:50 -3.2 CT Down 27.5 93.4 Low 04:12:50 - 04:42:50 10980
Penticton 04:27:50 -3.3 CT Down 27.6 93.5 Low 04:12:50 - 04:42:50 10972
Victoria 04:27:58 -2.1 CT Down 25.1 90.0 Low 04:12:58 - 04:42:58 10970
Oliver 04:27:51 -3.6 CT Down 27.6 93.3 Low 04:12:51 - 04:42:51 10943
Anarchist Mountain Observatory 04:27:51 -3.8 CT Down 27.8 93.4 Low 04:12:51 - 04:42:51 10925
Tonasket 04:27:53 -3.9 CT Down 27.8 93.1 Low 04:12:53 - 04:42:53 10901
Okanogan 04:27:54 -4.1 CT Down 27.7 92.9 Low 04:12:54 - 04:42:54 10876
Brewster 04:27:54 -4.2 CT Down 27.6 92.6 Low 04:12:54 - 04:42:54 10858
Manson/Chelan 04:27:56 -4.2 CT Down 27.3 92.2 Low 04:12:56 - 04:42:56 10848
Entiat 04:27:57 -4.3 CT Down 27.3 92.0 Low 04:12:57 - 04:42:57 10831
Wenatchee 04:27:58 -4.4 CT Down 27.2 91.8 Low 04:12:58 - 04:42:58 10812
Ellensburg 04:28:00 -4.6 CT Down 27.1 91.4 Low 04:13:00 - 04:43:00 10782
Yakima 04:28:01 -4.8 CT Down 27.1 91.2 Low 04:13:01 - 04:43:01 10748
Toppenish/White Swan 04:28:01 -5.1 CT Down 27.2 91.2 Low 04:13:01 - 04:43:01 10726
Goldendale 04:28:03 -5.2 CT Down 26.9 90.7 Low 04:13:03 - 04:43:03 10688
Pasco 04:28:00 -5.8 CT Down 28.1 92.1 Low 04:13:00 - 04:43:00 10688
The Dalles 04:28:05 -5.2 CT Down 26.7 90.3 Low 04:13:05 - 04:43:05 10677
PNWRO 04:28:00 -6.1 NT Down 28.3 92.1 Low 04:13:00 - 04:43:00 10662
Maupin 04:28:05 -5.5 CT Down 26.8 90.1 Low 04:13:05 - 04:43:05 10638
Sisters 04:28:08 -5.8 CT Down 26.4 89.4 Low 04:13:08 - 04:43:08 10574
Redmond 04:28:09 -6.1 NT Down 26.7 89.6 Low 04:13:09 - 04:43:09 10563
Bend 04:28:09 -6.1 NT Down 26.6 89.4 Low 04:13:09 - 04:43:09 10547
Oregon Observatory 04:28:10 -6.2 NT Down 26.5 89.3 Low 04:13:10 - 04:43:10 10535
La Pine/Gilchrist 04:28:10 -6.3 NT Down 26.5 89.1 Low 04:13:10 - 04:43:10 10519
North Lake 04:28:11 -6.9 NT Down 26.9 89.3 Low 04:13:11 - 04:43:11 10467
Paisley 04:28:13 -7.5 NT Down 27.2 89.3 Low 04:13:13 - 04:43:13 10409
Klamath Falls 04:28:15 -7.1 NT Down 26.3 88.2 Low 04:13:15 - 04:43:15 10396
Lakeview 04:28:14 -7.9 NT Down 27.3 89.2 Low 04:13:14 - 04:43:14 10360
Cedarville 04:28:15 -8.5 NT Down 27.4 88.9 Low 04:13:15 - 04:43:15 10296
Fall River/Burney 04:28:18 -8.1 NT Down 26.5 87.9 Low 04:13:18 - 04:43:18 10282
Susanville 04:28:19 -8.9 NT Down 27.1 88.1 Low 04:13:19 - 04:43:19 10207
Greenville 04:28:20 -8.9 NT Down 26.8 87.7 Low 04:13:20 - 04:43:20 10189
Gimple 04:28:20 -9.0 NT Down 26.9 87.8 Low 04:13:20 - 04:43:20 10186
Quincy 04:28:21 -9.1 NT Down 26.8 87.6 Low 04:13:21 - 04:43:21 10170
Portola 04:28:20 -9.4 NT Down 27.2 87.9 Low 04:13:20 - 04:43:20 10147
Reno 04:28:20 -10.0 NT Down 27.7 88.1 Low 04:13:20 - 04:43:20 10107
Carson City 04:28:21 -10.2 NT Down 27.7 88.0 Low 04:13:21 - 04:43:21 10073
Gardnerville 04:28:22 -10.4 NT Down 27.7 87.9 Low 04:13:22 - 04:43:22 10049
Yerington 04:28:20 -10.7 NT Down 28.2 88.3 Low 04:13:20 - 04:43:20 10040
Hawthorne 04:28:21 -11.4 NT Down 28.6 88.3 Low 04:13:21 - 04:43:21 9984
Lee Vining 04:28:23 -11.5 NT Down 28.2 87.7 Low 04:13:23 - 04:43:23 9943
Tonopah 04:28:21 -12.5 AT Down 29.7 88.9 Low 04:13:21 - 04:43:21 9906
Bishop 04:28:24 -12.3 AT Down 28.7 87.8 Low 04:13:24 - 04:43:24 9868
Niwot 04:27:52 -17.1 AT Down 38.8 98.3 Up 04:12:52 - 04:42:52 9838
SwRI 04:27:53 -17.1 AT Down 38.7 98.1 Up 04:12:53 - 04:42:53 9829
Beatty 04:28:23 -13.6 AT Down 30.0 88.5 Up 04:13:23 - 04:43:23 9784
CPSLO 04:28:32 -12.3 AT Down 26.8 85.5 Low 04:13:32 - 04:43:32 9729
Indian Springs 04:28:22 -14.4 AT Down 30.9 89.0 Up 04:13:22 - 04:43:22 9727
Henderson 04:28:22 -15.2 AT Down 31.4 89.1 Up 04:13:22 - 04:43:22 9659
Searchlight/Boulder City 04:28:23 -15.6 AT Down 31.5 88.8 Up 04:13:23 - 04:43:23 9602
Patrick 04:28:21 -16.3 AT Down 32.3 89.3 Up 04:13:21 - 04:43:21 9571
Laughlin/Bullhead City 04:28:23 -16.0 AT Down 31.7 88.8 Up 04:13:23 - 04:43:23 9564
Wildwood 04:28:32 -14.4 AT Down 28.4 86.0 Low 04:13:32 - 04:43:32 9559
Kingman/Dolan Springs 04:28:22 -16.3 AT Down 32.2 89.1 Up 04:13:22 - 04:43:22 9554
Mohave Valley 04:28:24 -16.2 AT Down 31.7 88.6 Up 04:13:24 - 04:43:24 9537
DCO 04:28:21 -16.9 AT Down 32.9 89.5 Up 04:13:21 - 04:43:21 9524
Lake Havasu City 04:28:24 -16.7 AT Down 31.9 88.5 Up 04:13:24 - 04:43:24 9492
Idyllwild 04:28:29 -15.8 AT Down 29.9 86.8 Low 04:13:29 - 04:43:29 9477
Parker 04:28:24 -16.9 AT Down 31.9 88.3 Up 04:13:24 - 04:43:24 9457
Blythe 04:28:27 -17.1 AT Down 31.7 87.8 Up 04:13:27 - 04:43:27 9412
Calipatria 04:28:29 -16.9 AT Down 30.9 87.0 Up 04:13:29 - 04:43:29 9387
George/Scottsdale 04:28:21 -18.6 Dark Down 33.9 89.3 Up 04:13:21 - 04:43:21 9356
Yuma 04:28:28 -17.8 AT Down 31.6 87.2 Up 04:13:28 - 04:43:28 9322

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 08JO41, (2020/06/17 04:25UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 20.41 105
Tarazed        19:46:15.6 +10:36:48  2.7 16.02  99
111 Her        18:47:01.4 +18:10:56  4.4  0.52 111
PPM 135209     18:46:41.4 +18:42:21  7.6  0.50 111
PPM 135267     18:48:51.0 +18:50:56  9.5  0.32 110
08JO41         18:48:39.3 +18:31:58 17.0       111
Positions are for J2000

Event circumstances last updated at 2020/03/09 21:19:31 UT

Marc W. Buie, Southwest Research Institute

RECON