RECON: TNO occultation with 08JO41

Event between 08JO41 and star GA1080:06226691 with event index number of 273810

Geocentric closest approach at 2020/06/15 08:49:11 UTC

J2000 position of star is 18:48:47.9 +18:31:50
Equinox of date position of star is 18:49:37.5 +18:33:11
Stellar brightness G=15.4, use SENSEUP=128
Star is 95 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=24.6

[RECON map]
TNO is 41.4 AU from the Sun and 40.7 AU from the Earth.
The TNO is moving 22.8 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 335 seconds.
The 1-sigma cross-track error in the shadow position is 3537 km.
The sky-plane scale is 29505.8 km/arcsec.

The TNO has an absolute magnitude Hv=8.4
Diameter=123.6 km assuming a 5% albedo -- 5.4 sec chord
Diameter=50.5 km assuming a 30% albedo -- 2.2 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 08JO41, (2020/06/15 08:49UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:37.9 +38:48:13  0.0 20.42  96
Tarazed        19:47:13.9 +10:39:52  2.7 15.99  81
111 Her        18:47:55.5 +18:12:20  4.4  0.55  95
PPM 135209     18:47:35.2 +18:43:45  7.6  0.53  95
PPM 135267     18:49:44.8 +18:52:24  9.5  0.32  95
08JO41         18:49:41.8 +18:33:18 15.4        95
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 2.7 sigma about the mid-time.
The median site spacing is 23.7 km RECON observability=1.0 and success probability=7.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:49:38 -15.9 AT Down 58.4 170.8 Up 08:34:38 - 09:04:38 6582
Summerland 08:49:39 -16.0 AT Down 58.4 170.1 Up 08:34:39 - 09:04:39 6577
Penticton 08:49:38 -16.3 AT Down 58.7 170.4 Up 08:34:38 - 09:04:38 6547
Okanagan Falls 08:49:39 -16.4 AT Down 58.9 170.3 Up 08:34:39 - 09:04:39 6529
Oliver 08:49:38 -16.6 AT Down 59.1 170.3 Up 08:34:38 - 09:04:38 6513
Anarchist Mountain Observatory 08:49:38 -16.7 AT Down 59.2 170.6 Up 08:34:38 - 09:04:38 6497
Oroville 08:49:38 -16.8 AT Down 59.3 170.4 Up 08:34:38 - 09:04:38 6490
Tonasket 08:49:38 -17.1 AT Down 59.5 170.4 Up 08:34:38 - 09:04:38 6467
Okanogan 08:49:39 -17.4 AT Down 59.9 170.0 Up 08:34:39 - 09:04:39 6434
Brewster 08:49:39 -17.7 AT Down 60.1 169.6 Up 08:34:39 - 09:04:39 6407
Manson/Chelan 08:49:41 -18.0 AT Down 60.3 168.8 Up 08:34:41 - 09:04:41 6386
Entiat 08:49:41 -18.2 Dark Down 60.5 168.6 Up 08:34:41 - 09:04:41 6364
Wenatchee 08:49:42 -18.4 Dark Down 60.7 168.3 Up 08:34:42 - 09:04:42 6339
Ellensburg 08:49:42 -18.9 Dark Down 61.1 167.7 Up 08:34:42 - 09:04:42 6298
Yakima 08:49:42 -19.3 Dark Down 61.5 167.5 Up 08:34:42 - 09:04:42 6258
Toppenish/White Swan 08:49:42 -19.5 Dark Down 61.7 167.8 Up 08:34:42 - 09:04:42 6238
Pasco 08:49:37 -19.4 Dark Down 62.0 170.2 Up 08:34:37 - 09:04:37 6229
PNWRO 08:49:37 -19.6 Dark Down 62.3 170.6 Up 08:34:37 - 09:04:37 6206
George/Umatilla 08:49:38 -19.8 Dark Down 62.3 169.7 Up 08:34:38 - 09:04:38 6196
Goldendale 08:49:43 -20.1 Dark Down 62.2 166.7 Up 08:34:43 - 09:04:43 6182
The Dalles 08:49:45 -20.3 Dark Down 62.3 165.9 Up 08:34:45 - 09:04:45 6159
Maupin 08:49:43 -20.7 Dark Down 62.8 165.9 Up 08:34:43 - 09:04:43 6117
Madras/Culver 08:49:44 -21.3 Dark Down 63.3 165.6 Up 08:34:44 - 09:04:44 6063
Sisters 08:49:46 -21.7 Dark Down 63.5 164.5 Up 08:34:46 - 09:04:46 6028
Redmond 08:49:44 -21.6 Dark Down 63.6 165.3 Up 08:34:44 - 09:04:44 6027
Bend 08:49:45 -21.9 Dark Down 63.8 164.9 Up 08:34:45 - 09:04:45 6005
Oregon Observatory 08:49:45 -22.1 Dark Down 64.0 164.5 Up 08:34:45 - 09:04:45 5987
La Pine/Gilchrist 08:49:45 -22.3 Dark Down 64.1 164.3 Up 08:34:45 - 09:04:45 5966
North Lake 08:49:44 -22.6 Dark Down 64.7 165.3 Up 08:34:44 - 09:04:44 5924
Paisley 08:49:42 -23.1 Dark Down 65.3 165.8 Up 08:34:42 - 09:04:42 5869
Chiloquin 08:49:47 -23.4 Dark Down 65.1 162.8 Up 08:34:47 - 09:04:47 5853
Klamath Falls 08:49:47 -23.7 Dark Down 65.5 162.8 Up 08:34:47 - 09:04:47 5818
Lakeview 08:49:42 -23.6 Dark Down 65.8 166.0 Up 08:34:42 - 09:04:42 5818
Tulelake 08:49:45 -23.9 Dark Down 65.8 163.3 Up 08:34:45 - 09:04:45 5791
Cedarville 08:49:41 -24.2 Dark Down 66.5 166.0 Up 08:34:41 - 09:04:41 5751
Niwot 08:48:46 -21.8 Dark Up 67.1 202.2 Up 08:33:46 - 09:03:46 5703
Fall River/Burney 08:49:45 -24.8 Dark Down 66.7 162.9 Up 08:34:45 - 09:04:45 5698
Susanville 08:49:43 -25.3 Dark Down 67.4 164.2 Up 08:34:43 - 09:04:43 5635
Gimple 08:49:43 -25.6 Dark Down 67.7 163.5 Up 08:34:43 - 09:04:43 5606
Greenville 08:49:44 -25.7 Dark Down 67.7 163.3 Up 08:34:44 - 09:04:44 5606
Quincy 08:49:44 -25.9 Dark Down 67.8 163.2 Up 08:34:44 - 09:04:44 5585
Portola 08:49:42 -25.9 Dark Down 68.1 164.2 Up 08:34:42 - 09:04:42 5573
Reno 08:49:40 -26.1 Dark Down 68.5 165.7 Up 08:34:40 - 09:04:40 5548
Carson City 08:49:40 -26.4 Dark Down 68.8 165.5 Up 08:34:40 - 09:04:40 5510
Yerington 08:49:37 -26.5 Dark Down 69.1 167.0 Up 08:34:37 - 09:04:37 5492
Gardnerville 08:49:39 -26.6 Dark Down 69.1 165.5 Up 08:34:39 - 09:04:39 5485
Hawthorne 08:49:36 -26.8 Dark Down 69.7 168.1 Up 08:34:36 - 09:04:36 5446
Tonopah 08:49:30 -27.0 Dark Down 70.3 171.7 Up 08:34:30 - 09:04:30 5403
Lee Vining 08:49:37 -27.5 Dark Down 70.1 166.5 Up 08:34:37 - 09:04:37 5385
Bishop 08:49:34 -27.9 Dark Down 70.8 168.1 Up 08:34:34 - 09:04:34 5325
Beatty 08:49:28 -28.0 Dark Down 71.5 172.5 Up 08:34:28 - 09:04:28 5284
Indian Springs 08:49:24 -28.1 Dark Down 71.9 175.6 Up 08:34:24 - 09:04:24 5255
Lone Pine 08:49:33 -28.6 Dark Down 71.6 168.6 Up 08:34:33 - 09:04:33 5246
Henderson 08:49:21 -28.4 Dark Down 72.5 177.7 Up 08:34:21 - 09:04:21 5202
Patrick 08:49:16 -28.7 Dark Down 73.1 181.2 Up 08:34:16 - 09:04:16 5143
Searchlight/Boulder City 08:49:20 -29.0 Dark Down 73.1 177.8 Up 08:34:20 - 09:04:20 5142
Kingman/Dolan Springs 08:49:17 -29.0 Dark Down 73.3 180.6 Up 08:34:17 - 09:04:17 5118
DCO 08:49:13 -28.8 Dark Down 73.4 183.5 Up 08:34:13 - 09:04:13 5115
Laughlin/Bullhead City 08:49:19 -29.2 Dark Down 73.4 178.9 Up 08:34:19 - 09:04:19 5112
CPSLO 08:49:43 -30.3 Dark Down 72.3 159.9 Up 08:34:43 - 09:04:43 5099
Mohave Valley 08:49:19 -29.4 Dark Down 73.6 178.9 Up 08:34:19 - 09:04:19 5084
Lake Havasu City 08:49:18 -29.7 Dark Down 74.0 179.7 Up 08:34:18 - 09:04:18 5042
Parker 08:49:17 -30.1 Dark Down 74.4 179.8 Up 08:34:17 - 09:04:17 5005
Wildwood 08:49:35 -31.1 Dark Down 74.0 165.1 Up 08:34:35 - 09:04:35 4977
Idyllwild 08:49:27 -31.1 Dark Down 74.6 171.2 Up 08:34:27 - 09:04:27 4948
Blythe 08:49:19 -30.6 Dark Down 74.9 178.7 Up 08:34:19 - 09:04:19 4947
Calipatria 08:49:22 -31.3 Dark Down 75.4 175.2 Up 08:34:22 - 09:04:22 4889
Yuma 08:49:19 -31.5 Dark Down 75.8 178.5 Up 08:34:19 - 09:04:19 4848

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, (2020/06/15 08:49UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 20.42  96
Tarazed        19:46:15.6 +10:36:48  2.7 15.99  81
111 Her        18:47:01.4 +18:10:56  4.4  0.55  95
PPM 135209     18:46:41.4 +18:42:21  7.6  0.53  95
PPM 135267     18:48:51.0 +18:50:56  9.5  0.32  95
08JO41         18:48:47.9 +18:31:50 15.4        95
Positions are for J2000

Event circumstances last updated at 2018/10/26 21:18:51 UT

Marc W. Buie, Southwest Research Institute

RECON