RECON: TNO occultation with 04VM131

Event between 04VM131 and star GA1040:01096756 with event index number of 164206

Geocentric closest approach at 2018/11/17 06:40:16 UTC

J2000 position of star is 05:44:30.6 +14:08:19
Equinox of date position of star is 05:45:33.4 +14:08:43
Stellar brightness G=14.9, use SENSEUP=128
Star is 102 degrees from the moon. Moon is 66% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 32.1 AU from the Sun and 31.3 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 307 seconds.
The 1-sigma cross-track error in the shadow position is 1498 km.
The sky-plane scale is 22671.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=115.3 km assuming a 5% albedo -- 5.5 sec chord
Diameter=47.1 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04VM131, (2018/11/17 06:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.7 +07:24:33  0.4  7.22 104
Bellatrix      05:26:08.7 +06:21:55  1.6  9.13  97
131 Tau        05:48:17.7 +14:29:38  5.7  0.74 103
PPM 121311     05:44:02.4 +14:11:09  7.6  0.38 102
PPM 121322     05:44:37.0 +14:18:47  8.7  0.29 102
04VM131        05:45:35.0 +14:08:43 14.9       103
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 2.9 sigma about the mid-time.
The median site spacing is 19.9 km RECON observability=1.0 and success probability=14.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 06:42:06 -57.1 Dark Up 36.9 114.1 Up 06:27:06 - 06:57:06 -1680
Oroville 06:42:08 -57.7 Dark Up 37.2 113.8 Up 06:27:08 - 06:57:08 -1725
Tonasket 06:42:09 -57.9 Dark Up 37.3 113.6 Up 06:27:09 - 06:57:09 -1742
Okanogan 06:42:10 -58.1 Dark Up 37.3 113.3 Up 06:27:10 - 06:57:10 -1762
Brewster 06:42:12 -58.3 Dark Up 37.3 112.9 Up 06:27:12 - 06:57:12 -1777
Manson/Chelan 06:42:13 -58.4 Dark Up 37.2 112.4 Up 06:27:13 - 06:57:13 -1784
Entiat 06:42:14 -58.5 Dark Up 37.2 112.2 Up 06:27:14 - 06:57:14 -1798
Wenatchee 06:42:16 -58.7 Dark Up 37.2 111.9 Up 06:27:16 - 06:57:16 -1814
Ellensburg 06:42:17 -59.0 Dark Up 37.3 111.4 Up 06:27:17 - 06:57:17 -1839
Yakima 06:42:19 -59.3 Dark Up 37.4 111.1 Up 06:27:19 - 06:57:19 -1868
Toppenish/White Swan 06:42:20 -59.6 Dark Up 37.6 111.1 Up 06:27:20 - 06:57:20 -1888
Goldendale 06:42:23 -59.9 Dark Up 37.5 110.4 Up 06:27:23 - 06:57:23 -1919
Pasco 06:42:17 -60.1 Dark Up 38.4 112.2 Up 06:27:17 - 06:57:17 -1927
The Dalles 06:42:24 -60.0 Dark Up 37.4 109.9 Up 06:27:24 - 06:57:24 -1927
George/Umatilla 06:42:19 -60.4 Dark Up 38.4 111.8 Up 06:27:19 - 06:57:19 -1947
PNWRO 06:42:17 -60.4 Dark Up 38.7 112.3 Up 06:27:17 - 06:57:17 -1951
Maupin 06:42:25 -60.4 Dark Up 37.6 109.7 Up 06:27:25 - 06:57:25 -1961
Madras/Culver 06:42:27 -60.8 Dark Up 37.7 109.3 Up 06:27:27 - 06:57:27 -2002
Sisters 06:42:30 -60.9 Dark Up 37.5 108.6 Up 06:27:30 - 06:57:30 -2016
Redmond 06:42:29 -61.1 Dark Up 37.8 109.0 Up 06:27:29 - 06:57:29 -2028
Bend 06:42:30 -61.2 Dark Up 37.8 108.7 Up 06:27:30 - 06:57:30 -2041
Oregon Observatory 06:42:31 -61.3 Dark Up 37.8 108.4 Up 06:27:31 - 06:57:31 -2051
La Pine/Gilchrist 06:42:31 -61.4 Dark Up 37.8 108.2 Up 06:27:31 - 06:57:31 -2065
North Lake 06:42:32 -62.0 Dark Up 38.3 108.4 Up 06:27:32 - 06:57:32 -2113
Chiloquin 06:42:36 -62.2 Dark Up 37.9 107.1 Up 06:27:36 - 06:57:36 -2142
Paisley 06:42:33 -62.6 Dark Up 38.8 108.3 Up 06:27:33 - 06:57:33 -2166
Klamath Falls 06:42:38 -62.5 Dark Up 38.0 106.9 Up 06:27:38 - 06:57:38 -2171
Tulelake 06:42:38 -62.8 Dark Up 38.3 107.0 Up 06:27:38 - 06:57:38 -2200
Lakeview 06:42:34 -63.1 Dark Up 39.1 108.1 Up 06:27:34 - 06:57:34 -2210
Cedarville 06:42:36 -63.8 Dark Up 39.4 107.8 Up 06:27:36 - 06:57:36 -2267
Fall River/Burney 06:42:41 -63.6 Dark Up 38.7 106.4 Up 06:27:41 - 06:57:41 -2275
Susanville 06:42:41 -64.5 Dark Up 39.4 106.5 Up 06:27:41 - 06:57:41 -2345
Greenville 06:42:43 -64.5 Dark Up 39.3 106.1 Up 06:27:43 - 06:57:43 -2360
Gimple 06:42:42 -64.6 Dark Up 39.3 106.1 Up 06:27:42 - 06:57:42 -2362
Quincy 06:42:43 -64.7 Dark Up 39.3 105.9 Up 06:27:43 - 06:57:43 -2376
Portola 06:42:43 -65.0 Dark Up 39.7 106.2 Up 06:27:43 - 06:57:43 -2399
Reno 06:42:42 -65.5 Dark Up 40.3 106.5 Up 06:27:42 - 06:57:42 -2438
Carson City 06:42:43 -65.8 Dark Up 40.4 106.2 Up 06:27:43 - 06:57:43 -2468
Gardnerville 06:42:44 -66.0 Dark Up 40.5 106.1 Up 06:27:44 - 06:57:44 -2490
Yerington 06:42:42 -66.3 Dark Up 40.9 106.6 Up 06:27:42 - 06:57:42 -2501
Hawthorne 06:42:42 -66.9 Dark Up 41.4 106.6 Up 06:27:42 - 06:57:42 -2554
Lee Vining 06:42:45 -67.1 Dark Up 41.2 105.8 Up 06:27:45 - 06:57:45 -2589
Tonopah 06:42:40 -67.9 Dark Up 42.6 107.4 Up 06:27:40 - 06:57:40 -2631
Bishop 06:42:45 -68.0 Dark Up 41.9 105.8 Up 06:27:45 - 06:57:45 -2659
Lone Pine 06:42:47 -68.7 Dark Up 42.4 105.5 Up 06:27:47 - 06:57:47 -2733
Beatty 06:42:42 -69.1 Dark Up 43.3 106.7 Up 06:27:42 - 06:57:42 -2743
Niwot 06:41:59 -68.9 Dark Up 50.2 120.8 Up 06:26:59 - 06:56:59 -2765
CPSLO 06:42:58 -68.3 Dark Up 40.7 102.4 Up 06:27:58 - 06:57:58 -2775
Indian Springs 06:42:41 -69.8 Dark Up 44.2 107.3 Up 06:27:41 - 06:57:41 -2801
Henderson 06:42:40 -70.6 Dark Up 44.9 107.4 Up 06:27:40 - 06:57:40 -2866
Searchlight/Boulder City 06:42:42 -71.1 Dark Up 45.2 106.9 Up 06:27:42 - 06:57:42 -2919
Wildwood 06:42:56 -70.4 Dark Up 42.6 102.8 Up 06:27:56 - 06:57:56 -2939
Patrick 06:42:39 -71.6 Dark Up 46.0 107.7 Up 06:27:39 - 06:57:39 -2952
Laughlin/Bullhead City 06:42:42 -71.5 Dark Up 45.5 106.9 Up 06:27:42 - 06:57:42 -2955
Kingman/Dolan Springs 06:42:40 -71.7 Dark Up 45.9 107.4 Up 06:27:40 - 06:57:40 -2967
Mohave Valley 06:42:42 -71.7 Dark Up 45.6 106.6 Up 06:27:42 - 06:57:42 -2979
DCO 06:42:38 -72.1 Dark Up 46.6 108.0 Up 06:27:38 - 06:57:38 -2999
Lake Havasu City 06:42:43 -72.2 Dark Up 45.9 106.5 Up 06:27:43 - 06:57:43 -3022
Idyllwild 06:42:52 -71.7 Dark Up 44.2 103.9 Up 06:27:52 - 06:57:52 -3024
Parker 06:42:43 -72.5 Dark Up 46.0 106.1 Up 06:27:43 - 06:57:43 -3055
Blythe 06:42:46 -72.8 Dark Up 45.9 105.4 Up 06:27:46 - 06:57:46 -3094
Calipatria 06:42:50 -72.8 Dark Up 45.3 104.2 Up 06:27:50 - 06:57:50 -3112
Yuma 06:42:49 -73.5 Dark Up 46.2 104.4 Up 06:27:49 - 06:57:49 -3177

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 04VM131, (2018/11/17 06:40UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  7.22 104
Bellatrix      05:25:07.8 +06:20:58  1.6  9.13  97
131 Tau        05:47:13.1 +14:29:18  5.7  0.74 103
PPM 121311     05:42:58.0 +14:10:42  7.6  0.38 102
PPM 121322     05:43:32.5 +14:18:21  8.7  0.29 102
04VM131        05:44:30.6 +14:08:19 14.9       102
Positions are for J2000

Event circumstances last updated at 2018/06/05 16:34:24 UT

Marc W. Buie, Southwest Research Institute

RECON