RECON: TNO occultation with 05JB186

Event between 05JB186 and star UC4-368-080720 with event index number of 116491

Geocentric closest approach at 2018/06/02 04:49:39 UTC

J2000 position of star is 16:57:32.6 -16:30:21
Equinox of date position of star is 16:58:34.6 -16:31:56
Stellar brightness R=14.5, use SENSEUP=128
Star is 37 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 37.3 AU from the Sun and 36.3 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 560 seconds.
The 1-sigma cross-track error in the shadow position is 5159 km.
The sky-plane scale is 26319.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=167.5 km assuming a 5% albedo -- 6.8 sec chord
Diameter=68.4 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 05JB186, (2018/06/02 04:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.4 -26:28:17  0.9 11.88  42
35Eta Oph      17:11:26.1 -15:44:47  2.6  3.18  34
PPM 232348     16:57:05.7 -16:50:03  6.3  0.47  37
PPM 232365     16:58:00.9 -16:37:25  9.6  0.17  37
05JB186        16:58:36.3 -16:31:59 14.5        37
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 1.6 sigma about the mid-time.
The median site spacing is 17.7 km RECON observability=0.3 and success probability=4.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:52:30 -8.0 CT Down 11.0 131.5 Really Low 04:37:30 - 05:07:30 -1519
Tonasket 04:52:30 -8.2 CT Down 11.1 131.5 Really Low 04:37:30 - 05:07:30 -1534
Okanogan 04:52:31 -8.4 CT Down 11.3 131.3 Really Low 04:37:31 - 05:07:31 -1560
Brewster 04:52:32 -8.5 CT Down 11.3 131.1 Really Low 04:37:32 - 05:07:32 -1583
Manson/Chelan 04:52:33 -8.5 CT Down 11.3 130.8 Really Low 04:37:33 - 05:07:33 -1606
Entiat 04:52:34 -8.6 CT Down 11.4 130.7 Really Low 04:37:34 - 05:07:34 -1622
Wenatchee 04:52:35 -8.8 CT Down 11.5 130.5 Really Low 04:37:35 - 05:07:35 -1642
Ellensburg 04:52:35 -9.0 CT Down 11.7 130.3 Really Low 04:37:35 - 05:07:35 -1676
Pasco 04:52:35 -10.2 CT Down 12.9 131.4 Really Low 04:37:35 - 05:07:35 -1691
PNWRO 04:52:35 -10.5 CT Down 13.2 131.5 Really Low 04:37:35 - 05:07:35 -1703
Yakima 04:52:36 -9.2 CT Down 11.9 130.2 Really Low 04:37:36 - 05:07:36 -1704
Toppenish/White Swan 04:52:37 -9.5 CT Down 12.2 130.3 Really Low 04:37:37 - 05:07:37 -1715
George/Umatilla 04:52:35 -10.3 CT Down 13.0 131.1 Really Low 04:37:35 - 05:07:35 -1720
Niwot 04:52:14 -21.1 Dark Down 24.3 141.9 Low 04:37:14 - 05:07:14 -1758
Goldendale 04:52:39 -9.7 CT Down 12.3 129.9 Really Low 04:37:39 - 05:07:39 -1765
The Dalles 04:52:39 -9.7 CT Down 12.2 129.6 Really Low 04:37:39 - 05:07:39 -1790
Maupin 04:52:40 -10.0 CT Down 12.6 129.6 Really Low 04:37:40 - 05:07:40 -1817
Madras/Culver 04:52:42 -10.4 CT Down 12.9 129.5 Really Low 04:37:42 - 05:07:42 -1857
Redmond 04:52:43 -10.6 CT Down 13.1 129.4 Really Low 04:37:43 - 05:07:43 -1885
Sisters 04:52:43 -10.4 CT Down 12.9 129.0 Really Low 04:37:43 - 05:07:43 -1894
Bend 04:52:43 -10.7 CT Down 13.2 129.2 Really Low 04:37:43 - 05:07:43 -1904
Oregon Observatory 04:52:44 -10.8 CT Down 13.2 129.1 Really Low 04:37:44 - 05:07:44 -1920
La Pine/Gilchrist 04:52:44 -10.9 CT Down 13.3 129.0 Really Low 04:37:44 - 05:07:44 -1937
North Lake 04:52:44 -11.5 CT Down 13.9 129.4 Really Low 04:37:44 - 05:07:44 -1953
Paisley 04:52:44 -12.1 AT Down 14.5 129.6 Really Low 04:37:44 - 05:07:44 -1984
Lakeview 04:52:45 -12.6 AT Down 14.9 129.6 Really Low 04:37:45 - 05:07:45 -2017
Chiloquin 04:52:47 -11.5 CT Down 13.8 128.5 Really Low 04:37:47 - 05:07:47 -2029
Klamath Falls 04:52:47 -11.8 CT Down 14.0 128.5 Really Low 04:37:47 - 05:07:47 -2053
Cedarville 04:52:46 -13.1 AT Down 15.4 129.6 Really Low 04:37:46 - 05:07:46 -2061
Tulelake 04:52:47 -12.2 AT Down 14.4 128.7 Really Low 04:37:47 - 05:07:47 -2065
Fall River/Burney 04:52:49 -12.9 AT Down 15.0 128.6 Really Low 04:37:49 - 05:07:49 -2132
Susanville 04:52:49 -13.7 AT Down 15.8 129.0 Really Low 04:37:49 - 05:07:49 -2160
Gimple 04:52:50 -13.8 AT Down 15.9 128.8 Really Low 04:37:50 - 05:07:50 -2187
Greenville 04:52:50 -13.7 AT Down 15.8 128.7 Really Low 04:37:50 - 05:07:50 -2189
Portola 04:52:49 -14.2 AT Down 16.3 129.0 Really Low 04:37:49 - 05:07:49 -2201
Reno 04:52:48 -14.8 AT Down 16.9 129.5 Really Low 04:37:48 - 05:07:48 -2204
Quincy 04:52:50 -13.9 AT Down 16.0 128.7 Really Low 04:37:50 - 05:07:50 -2205
Yerington 04:52:48 -15.5 AT Down 17.6 129.9 Really Low 04:37:48 - 05:07:48 -2228
Carson City 04:52:49 -15.0 AT Down 17.1 129.4 Really Low 04:37:49 - 05:07:49 -2231
Tonopah 04:52:45 -17.2 AT Down 19.4 131.2 Really Low 04:37:45 - 05:07:45 -2246
Gardnerville 04:52:50 -15.2 AT Down 17.3 129.4 Really Low 04:37:50 - 05:07:50 -2249
Hawthorne 04:52:48 -16.1 AT Down 18.3 130.2 Really Low 04:37:48 - 05:07:48 -2250
Lee Vining 04:52:50 -16.3 AT Down 18.3 129.6 Really Low 04:37:50 - 05:07:50 -2309
Indian Springs 04:52:44 -19.1 Dark Down 21.3 132.0 Low 04:37:44 - 05:07:44 -2319
Beatty 04:52:46 -18.3 Dark Down 20.4 131.2 Low 04:37:46 - 05:07:46 -2324
Bishop 04:52:49 -17.1 AT Down 19.1 130.0 Really Low 04:37:49 - 05:07:49 -2335
Henderson 04:52:43 -19.9 Dark Down 22.1 132.4 Low 04:37:43 - 05:07:43 -2341
Patrick 04:52:41 -21.0 Dark Down 23.1 133.1 Low 04:37:41 - 05:07:41 -2359
DCO 04:52:40 -21.6 Dark Down 23.8 133.6 Low 04:37:40 - 05:07:40 -2363
Kingman/Dolan Springs 04:52:42 -21.1 Dark Down 23.2 132.9 Low 04:37:42 - 05:07:42 -2383
Searchlight/Boulder City 04:52:44 -20.4 Dark Down 22.5 132.3 Low 04:37:44 - 05:07:44 -2386
Lone Pine 04:52:50 -17.9 AT Down 19.8 130.1 Really Low 04:37:50 - 05:07:50 -2387
Laughlin/Bullhead City 04:52:43 -20.8 Dark Down 22.9 132.4 Low 04:37:43 - 05:07:43 -2400
Mohave Valley 04:52:44 -21.0 Dark Down 23.1 132.4 Low 04:37:44 - 05:07:44 -2422
Lake Havasu City 04:52:43 -21.4 Dark Down 23.5 132.4 Low 04:37:43 - 05:07:43 -2447
Parker 04:52:44 -21.7 Dark Down 23.8 132.3 Low 04:37:44 - 05:07:44 -2475
Blythe 04:52:45 -22.0 Dark Down 23.9 131.9 Low 04:37:45 - 05:07:45 -2527
CPSLO 04:52:57 -17.4 AT Down 19.0 127.8 Really Low 04:37:57 - 05:07:57 -2570
Idyllwild 04:52:50 -20.7 Dark Down 22.5 130.3 Low 04:37:50 - 05:07:50 -2582
Calipatria 04:52:48 -21.8 Dark Down 23.7 131.0 Low 04:37:48 - 05:07:48 -2597
Yuma 04:52:46 -22.6 Dark Down 24.5 131.6 Low 04:37:46 - 05:07:46 -2606
Wildwood 04:52:54 -19.4 Dark Down 21.1 129.0 Low 04:37:54 - 05:07:54 -2609

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 05JB186, (2018/06/02 04:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.88  42
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.18  34
PPM 232348     16:56:02.0 -16:48:22  6.3  0.47  37
PPM 232365     16:56:57.2 -16:35:45  9.6  0.17  37
05JB186        16:57:32.6 -16:30:21 14.5        37
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:41:42 UT

Marc W. Buie, Southwest Research Institute

RECON