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 16:58:32.6 -16:31:54
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 17.4 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 04:52:29 -8.0 CT Down 10.9 131.5 Really Low 04:37:29 - 05:07:29 -1510
Tonasket 04:52:29 -8.2 CT Down 11.1 131.5 Really Low 04:37:29 - 05:07:29 -1525
Okanogan 04:52:30 -8.4 CT Down 11.3 131.3 Really Low 04:37:30 - 05:07:30 -1551
Brewster 04:52:31 -8.5 CT Down 11.3 131.1 Really Low 04:37:31 - 05:07:31 -1574
Manson/Chelan 04:52:32 -8.5 CT Down 11.3 130.8 Really Low 04:37:32 - 05:07:32 -1597
Entiat 04:52:33 -8.6 CT Down 11.4 130.7 Really Low 04:37:33 - 05:07:33 -1613
Wenatchee 04:52:34 -8.8 CT Down 11.5 130.5 Really Low 04:37:34 - 05:07:34 -1633
Ellensburg 04:52:35 -9.0 CT Down 11.7 130.3 Really Low 04:37:35 - 05:07:35 -1667
Pasco 04:52:34 -10.2 CT Down 12.9 131.4 Really Low 04:37:34 - 05:07:34 -1682
PNWRO 04:52:34 -10.5 CT Down 13.2 131.5 Really Low 04:37:34 - 05:07:34 -1693
Yakima 04:52:36 -9.2 CT Down 11.9 130.2 Really Low 04:37:36 - 05:07:36 -1695
Toppenish/White Swan 04:52:36 -9.5 CT Down 12.2 130.3 Really Low 04:37:36 - 05:07:36 -1706
George/Umatilla 04:52:35 -10.3 CT Down 13.0 131.1 Really Low 04:37:35 - 05:07:35 -1711
Niwot 04:52:12 -21.1 Dark Down 24.3 141.9 Low 04:37:12 - 05:07:12 -1747
Goldendale 04:52:38 -9.7 CT Down 12.3 129.9 Really Low 04:37:38 - 05:07:38 -1755
The Dalles 04:52:39 -9.7 CT Down 12.2 129.6 Really Low 04:37:39 - 05:07:39 -1781
Maupin 04:52:40 -10.0 CT Down 12.6 129.6 Really Low 04:37:40 - 05:07:40 -1807
Madras/Culver 04:52:41 -10.4 CT Down 12.9 129.5 Really Low 04:37:41 - 05:07:41 -1848
Redmond 04:52:42 -10.6 CT Down 13.1 129.4 Really Low 04:37:42 - 05:07:42 -1875
Sisters 04:52:43 -10.4 CT Down 12.9 129.0 Really Low 04:37:43 - 05:07:43 -1883
Bend 04:52:43 -10.7 CT Down 13.2 129.2 Really Low 04:37:43 - 05:07:43 -1894
Oregon Observatory 04:52:43 -10.8 CT Down 13.2 129.1 Really Low 04:37:43 - 05:07:43 -1910
La Pine/Gilchrist 04:52:44 -10.9 CT Down 13.3 129.0 Really Low 04:37:44 - 05:07:44 -1926
North Lake 04:52:43 -11.5 CT Down 13.9 129.4 Really Low 04:37:43 - 05:07:43 -1942
Paisley 04:52:44 -12.1 AT Down 14.5 129.6 Really Low 04:37:44 - 05:07:44 -1973
Lakeview 04:52:44 -12.6 AT Down 14.9 129.6 Really Low 04:37:44 - 05:07:44 -2006
Chiloquin 04:52:46 -11.5 CT Down 13.8 128.5 Really Low 04:37:46 - 05:07:46 -2019
Klamath Falls 04:52:47 -11.8 CT Down 14.0 128.5 Really Low 04:37:47 - 05:07:47 -2042
Cedarville 04:52:45 -13.1 AT Down 15.4 129.6 Really Low 04:37:45 - 05:07:45 -2050
Tulelake 04:52:47 -12.2 AT Down 14.4 128.7 Really Low 04:37:47 - 05:07:47 -2054
Fall River/Burney 04:52:48 -12.9 AT Down 15.0 128.6 Really Low 04:37:48 - 05:07:48 -2121
Susanville 04:52:48 -13.7 AT Down 15.8 129.0 Really Low 04:37:48 - 05:07:48 -2149
Gimple 04:52:49 -13.8 AT Down 15.9 128.8 Really Low 04:37:49 - 05:07:49 -2177
Greenville 04:52:50 -13.7 AT Down 15.8 128.7 Really Low 04:37:50 - 05:07:50 -2179
Portola 04:52:49 -14.2 AT Down 16.3 129.0 Really Low 04:37:49 - 05:07:49 -2191
Reno 04:52:48 -14.8 AT Down 16.9 129.5 Really Low 04:37:48 - 05:07:48 -2193
Quincy 04:52:50 -13.9 AT Down 16.0 128.7 Really Low 04:37:50 - 05:07:50 -2194
Yerington 04:52:48 -15.5 AT Down 17.6 129.9 Really Low 04:37:48 - 05:07:48 -2217
Carson City 04:52:48 -15.0 AT Down 17.1 129.4 Really Low 04:37:48 - 05:07:48 -2220
Tonopah 04:52:45 -17.2 AT Down 19.4 131.2 Really Low 04:37:45 - 05:07:45 -2235
Gardnerville 04:52:49 -15.2 AT Down 17.3 129.4 Really Low 04:37:49 - 05:07:49 -2238
Hawthorne 04:52:47 -16.1 AT Down 18.2 130.2 Really Low 04:37:47 - 05:07:47 -2239
Lee Vining 04:52:49 -16.3 AT Down 18.3 129.6 Really Low 04:37:49 - 05:07:49 -2297
Indian Springs 04:52:43 -19.1 Dark Down 21.3 132.0 Low 04:37:43 - 05:07:43 -2308
Beatty 04:52:45 -18.3 Dark Down 20.4 131.2 Low 04:37:45 - 05:07:45 -2314
Bishop 04:52:48 -17.1 AT Down 19.1 130.0 Really Low 04:37:48 - 05:07:48 -2324
Henderson 04:52:43 -19.9 Dark Down 22.1 132.4 Low 04:37:43 - 05:07:43 -2331
Patrick 04:52:41 -21.0 Dark Down 23.1 133.1 Low 04:37:41 - 05:07:41 -2348
DCO 04:52:39 -21.6 Dark Down 23.8 133.6 Low 04:37:39 - 05:07:39 -2352
Kingman/Dolan Springs 04:52:41 -21.0 Dark Down 23.2 132.9 Low 04:37:41 - 05:07:41 -2372
Searchlight/Boulder City 04:52:43 -20.4 Dark Down 22.5 132.2 Low 04:37:43 - 05:07:43 -2375
Lone Pine 04:52:49 -17.9 AT Down 19.8 130.1 Really Low 04:37:49 - 05:07:49 -2376
Laughlin/Bullhead City 04:52:43 -20.8 Dark Down 22.9 132.4 Low 04:37:43 - 05:07:43 -2389
Mohave Valley 04:52:43 -21.0 Dark Down 23.1 132.4 Low 04:37:43 - 05:07:43 -2411
Lake Havasu City 04:52:43 -21.4 Dark Down 23.5 132.4 Low 04:37:43 - 05:07:43 -2436
Parker 04:52:43 -21.7 Dark Down 23.8 132.3 Low 04:37:43 - 05:07:43 -2464
Blythe 04:52:45 -22.0 Dark Down 23.9 131.9 Low 04:37:45 - 05:07:45 -2517
CPSLO 04:52:56 -17.3 AT Down 19.0 127.8 Really Low 04:37:56 - 05:07:56 -2560
Idyllwild 04:52:50 -20.7 Dark Down 22.5 130.3 Low 04:37:50 - 05:07:50 -2570
Calipatria 04:52:47 -21.8 Dark Down 23.7 131.0 Low 04:37:47 - 05:07:47 -2586
Yuma 04:52:46 -22.6 Dark Down 24.5 131.6 Low 04:37:46 - 05:07:46 -2595
Wildwood 04:52:54 -19.4 Dark Down 21.1 129.0 Low 04:37:54 - 05:07:54 -2598

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 2017/05/14 18:41:42 UT

Marc W. Buie, Southwest Research Institute

RECON