RECON: TNO occultation with 13GJ138

Event between 13GJ138 and star GA0720:05044296 with event index number of 199450

Geocentric closest approach at 2019/06/04 04:33:16 UTC

J2000 position of star is 13:36:24.4 -17:29:06
Equinox of date position of star is 13:37:25.5 -17:34:50
Stellar brightness G=14.2, use SENSEUP=64
Star is 125 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 28.6 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 14.8 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is 3549 km.
The sky-plane scale is 20199.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=150.7 km assuming a 5% albedo -- 10.2 sec chord
Diameter=61.5 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13GJ138, (2019/06/04 04:33UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:13.1 -11:15:44  1.0  6.88 121
73 Vir         13:33:05.9 -18:49:42  6.0  1.62 124
PPM 227570     13:38:06.1 -16:32:45  7.9  1.05 125
PPM 227560     13:37:35.3 -17:30:30  9.8  0.08 125
13GJ138        13:37:27.5 -17:35:01 14.2       125
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 4.5 sigma about the mid-time.
The median site spacing is 9.4 km RECON observability=0.3 and success probability=1.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:35:28 -5.2 CT Down 22.6 177.6 Low 04:20:28 - 04:50:28 9565
Summerland 04:35:31 -5.1 CT Down 22.6 177.3 Low 04:20:31 - 04:50:31 9555
Penticton 04:35:29 -5.4 CT Down 22.9 177.5 Low 04:20:29 - 04:50:29 9546
Okanagan Falls 04:35:28 -5.5 CT Down 23.1 177.4 Low 04:20:28 - 04:50:28 9537
Oliver 04:35:30 -5.6 CT Down 23.3 177.5 Low 04:20:30 - 04:50:30 9531
Anarchist Mountain Observatory 04:35:26 -5.8 CT Down 23.5 177.6 Low 04:20:26 - 04:50:26 9528
Oroville 04:35:28 -5.9 CT Down 23.5 177.6 Low 04:20:28 - 04:50:28 9523
Tonasket 04:35:28 -6.0 NT Down 23.8 177.6 Low 04:20:28 - 04:50:28 9513
Okanogan 04:35:27 -6.2 NT Down 24.1 177.4 Low 04:20:27 - 04:50:27 9495
Brewster 04:35:28 -6.3 NT Down 24.4 177.2 Low 04:20:28 - 04:50:28 9478
Manson/Chelan 04:35:29 -6.3 NT Down 24.6 176.8 Low 04:20:29 - 04:50:29 9459
Entiat 04:35:30 -6.4 NT Down 24.8 176.7 Low 04:20:30 - 04:50:30 9448
Wenatchee 04:35:30 -6.5 NT Down 25.0 176.6 Low 04:20:30 - 04:50:30 9433
Niwot 04:34:04 -19.0 Dark Down 31.4 193.0 Up 04:19:04 - 04:49:04 9422
Ellensburg 04:35:32 -6.7 NT Down 25.4 176.4 Low 04:20:32 - 04:50:32 9409
Pasco 04:35:24 -7.9 NT Down 26.2 177.8 Low 04:20:24 - 04:50:24 9408
PNWRO 04:35:22 -8.2 NT Down 26.5 178.1 Low 04:20:22 - 04:50:22 9402
Yakima 04:35:30 -7.0 NT Down 25.8 176.3 Low 04:20:30 - 04:50:30 9389
George/Umatilla 04:35:25 -8.0 NT Down 26.6 177.6 Low 04:20:25 - 04:50:25 9387
Toppenish/White Swan 04:35:30 -7.2 NT Down 26.1 176.5 Low 04:20:30 - 04:50:30 9383
Goldendale 04:35:32 -7.4 NT Down 26.6 176.1 Low 04:20:32 - 04:50:32 9345
The Dalles 04:35:33 -7.3 NT Down 26.8 175.7 Low 04:20:33 - 04:50:33 9325
Maupin 04:35:35 -7.7 NT Down 27.2 175.8 Low 04:20:35 - 04:50:35 9307
Madras/Culver 04:35:33 -8.0 NT Down 27.8 175.7 Low 04:20:33 - 04:50:33 9278
Redmond 04:35:32 -8.2 NT Down 28.1 175.6 Low 04:20:32 - 04:50:32 9258
Sisters 04:35:34 -8.0 NT Down 28.1 175.2 Low 04:20:34 - 04:50:34 9249
Bend 04:35:34 -8.3 NT Down 28.3 175.5 Low 04:20:34 - 04:50:34 9243
Oregon Observatory 04:35:34 -8.3 NT Down 28.5 175.3 Low 04:20:34 - 04:50:34 9231
La Pine/Gilchrist 04:35:33 -8.5 NT Down 28.7 175.2 Low 04:20:33 - 04:50:33 9218
North Lake 04:35:30 -9.1 NT Down 29.2 175.9 Low 04:20:30 - 04:50:30 9211
Paisley 04:35:30 -9.6 NT Down 29.7 176.2 Low 04:20:30 - 04:50:30 9191
Lakeview 04:35:28 -10.1 NT Down 30.3 176.4 Up 04:20:28 - 04:50:28 9169
Chiloquin 04:35:35 -9.0 NT Down 29.8 174.8 Low 04:20:35 - 04:50:35 9149
Cedarville 04:35:25 -10.6 NT Down 30.9 176.6 Up 04:20:25 - 04:50:25 9137
Klamath Falls 04:35:34 -9.3 NT Down 30.1 174.9 Up 04:20:34 - 04:50:34 9132
Tulelake 04:35:32 -9.6 NT Down 30.4 175.2 Up 04:20:32 - 04:50:32 9126
Fall River/Burney 04:35:30 -10.3 NT Down 31.3 175.2 Up 04:20:30 - 04:50:30 9077
Susanville 04:35:26 -11.1 NT Down 32.0 176.0 Up 04:20:26 - 04:50:26 9061
Gimple 04:35:27 -11.2 NT Down 32.3 175.7 Up 04:20:27 - 04:50:27 9039
Greenville 04:35:29 -11.1 NT Down 32.3 175.7 Up 04:20:29 - 04:50:29 9037
Reno 04:35:22 -12.2 AT Down 32.9 176.9 Up 04:20:22 - 04:50:22 9034
Portola 04:35:25 -11.6 NT Down 32.6 176.2 Up 04:20:25 - 04:50:25 9031
Quincy 04:35:27 -11.3 NT Down 32.5 175.7 Up 04:20:27 - 04:50:27 9025
Yerington 04:35:17 -12.9 AT Down 33.5 177.6 Up 04:20:17 - 04:50:17 9019
Tonopah 04:35:06 -14.6 AT Down 34.5 179.8 Up 04:20:06 - 04:50:06 9017
Carson City 04:35:22 -12.4 AT Down 33.3 176.9 Up 04:20:22 - 04:50:22 9013
Hawthorne 04:35:14 -13.5 AT Down 34.0 178.2 Up 04:20:14 - 04:50:14 9006
Gardnerville 04:35:21 -12.6 AT Down 33.5 176.9 Up 04:20:21 - 04:50:21 9000
Indian Springs 04:34:55 -16.5 AT Down 35.9 181.5 Up 04:19:55 - 04:49:55 8968
Beatty 04:35:01 -15.7 AT Down 35.6 180.3 Up 04:20:01 - 04:50:01 8959
Lee Vining 04:35:16 -13.6 AT Down 34.5 177.6 Up 04:20:16 - 04:50:16 8959
Henderson 04:34:53 -17.3 AT Down 36.4 182.3 Up 04:19:53 - 04:49:53 8954
Patrick 04:34:44 -18.3 Dark Down 37.0 183.7 Up 04:19:44 - 04:49:44 8945
DCO 04:34:38 -18.9 Dark Down 37.3 184.5 Up 04:19:38 - 04:49:38 8944
Bishop 04:35:11 -14.4 AT Down 35.1 178.4 Up 04:20:11 - 04:50:11 8943
Kingman/Dolan Springs 04:34:44 -18.4 Dark Down 37.3 183.4 Up 04:19:44 - 04:49:44 8926
Searchlight/Boulder City 04:34:50 -17.7 AT Down 37.0 182.4 Up 04:19:50 - 04:49:50 8920
Laughlin/Bullhead City 04:34:48 -18.1 Dark Down 37.3 182.8 Up 04:19:48 - 04:49:48 8910
Lone Pine 04:35:09 -15.2 AT Down 35.9 178.8 Up 04:20:09 - 04:50:09 8905
Mohave Valley 04:34:47 -18.3 Dark Down 37.6 182.8 Up 04:19:47 - 04:49:47 8893
Lake Havasu City 04:34:44 -18.7 Dark Down 38.0 183.1 Up 04:19:44 - 04:49:44 8874
Parker 04:34:43 -19.0 Dark Down 38.3 183.2 Up 04:19:43 - 04:49:43 8852
Blythe 04:34:44 -19.2 Dark Down 38.8 182.9 Up 04:19:44 - 04:49:44 8810
Idyllwild 04:34:57 -17.9 AT Down 38.8 180.3 Up 04:19:57 - 04:49:57 8759
Calipatria 04:34:50 -19.0 Dark Down 39.4 181.8 Up 04:19:50 - 04:49:50 8752
Yuma 04:34:43 -19.9 Dark Down 39.8 182.8 Up 04:19:43 - 04:49:43 8748
CPSLO 04:35:21 -14.5 AT Down 37.1 175.7 Up 04:20:21 - 04:50:21 8747
Wildwood 04:35:09 -16.6 AT Down 38.4 178.1 Up 04:20:09 - 04:50:09 8728

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 13GJ138, (2019/06/04 04:33UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  6.88 121
73 Vir         13:32:02.7 -18:43:44  6.0  1.62 124
PPM 227570     13:37:03.2 -16:26:50  7.9  1.05 125
PPM 227560     13:36:32.2 -17:24:35  9.8  0.08 125
13GJ138        13:36:24.4 -17:29:06 14.2       125
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:33:57 UT

Marc W. Buie, Southwest Research Institute

RECON