RECON: TNO occultation with 13WV107

Event between 13WV107 and star UC4-539-036871 with event index number of 94509

Geocentric closest approach at 2017/12/30 06:00:24 UTC

J2000 position of star is 07:04:32.3 +17:41:27
Equinox of date position of star is 07:05:32.8 +17:39:49
Stellar brightness R=14.9, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=20.4

[RECON map]
TNO is 11.0 AU from the Sun and 10.1 AU from the Earth.
The TNO is moving 21.4 km/sec on the sky relative to the star, or, 10.5 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is 661 km.
The sky-plane scale is 7303.4 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=56.5 km assuming a 5% albedo -- 2.6 sec chord
Diameter=23.1 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13WV107, (2017/12/30 06:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:24.9 +27:58:53  1.1 13.95  56
Alhena         06:38:45.1 +16:22:57  1.9  6.54  40
45 Gem         07:09:23.9 +15:54:01  6.4  1.98  48
PPM 123470     07:05:24.4 +18:02:20  8.4  0.38  47
PPM 123465     07:05:16.0 +17:42:07  8.7  0.08  47
13WV107        07:05:35.0 +17:39:46 14.9        47
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 5.0 sigma about the mid-time.
The median site spacing is 20.7 km RECON observability=1.0 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:02:06 -55.3 Dark Up 47.3 124.1 Up 05:57:36 - 06:06:35 4170
Tonasket 06:02:06 -55.4 Dark Up 47.4 123.9 Up 05:57:37 - 06:06:36 4150
Okanogan 06:02:07 -55.5 Dark Up 47.5 123.4 Up 05:57:38 - 06:06:37 4124
Brewster 06:02:09 -55.6 Dark Up 47.5 122.9 Up 05:57:40 - 06:06:39 4104
Manson/Chelan 06:02:10 -55.5 Dark Up 47.4 122.3 Up 05:57:41 - 06:06:40 4093
Entiat 06:02:11 -55.6 Dark Up 47.5 122.0 Up 05:57:42 - 06:06:41 4075
Wenatchee 06:02:12 -55.7 Dark Up 47.6 121.7 Up 05:57:43 - 06:06:42 4055
Ellensburg 06:02:14 -55.8 Dark Up 47.7 121.1 Up 05:57:44 - 06:06:43 4023
Yakima 06:02:15 -56.0 Dark Up 47.9 120.7 Up 05:57:46 - 06:06:45 3988
Toppenish/White Swan 06:02:15 -56.2 Dark Up 48.1 120.6 Up 05:57:46 - 06:06:45 3965
Pasco 06:02:12 -57.0 Dark Up 48.9 122.0 Up 05:57:42 - 06:06:41 3930
Goldendale 06:02:18 -56.3 Dark Up 48.1 119.7 Up 05:57:48 - 06:06:47 3925
The Dalles 06:02:20 -56.2 Dark Up 48.0 119.0 Up 05:57:50 - 06:06:49 3912
George/Umatilla 06:02:13 -57.1 Dark Up 49.0 121.4 Up 05:57:44 - 06:06:43 3905
PNWRO 06:02:12 -57.3 Dark Up 49.2 122.0 Up 05:57:42 - 06:06:41 3904
Maupin 06:02:20 -56.5 Dark Up 48.3 118.8 Up 05:57:51 - 06:06:50 3873
Madras/Culver 06:02:22 -56.7 Dark Up 48.5 118.2 Up 05:57:52 - 06:06:51 3825
Sisters 06:02:24 -56.6 Dark Up 48.4 117.4 Up 05:57:54 - 06:06:53 3804
Redmond 06:02:23 -56.9 Dark Up 48.7 117.8 Up 05:57:53 - 06:06:52 3794
Bend 06:02:24 -56.9 Dark Up 48.7 117.4 Up 05:57:54 - 06:06:53 3777
Oregon Observatory 06:02:24 -56.9 Dark Up 48.7 117.1 Up 05:57:55 - 06:06:54 3765
La Pine/Gilchrist 06:02:25 -57.0 Dark Up 48.7 116.8 Up 05:57:56 - 06:06:55 3747
North Lake 06:02:25 -57.6 Dark Up 49.3 117.0 Up 05:57:55 - 06:06:54 3695
Chiloquin 06:02:29 -57.3 Dark Up 49.0 115.3 Up 05:58:00 - 06:06:59 3653
Paisley 06:02:25 -58.0 Dark Up 49.8 116.8 Up 05:57:55 - 06:06:54 3638
Klamath Falls 06:02:30 -57.5 Dark Up 49.2 115.0 Up 05:58:01 - 06:07:00 3620
Tulelake 06:02:30 -57.8 Dark Up 49.5 115.1 Up 05:58:00 - 06:06:59 3589
Lakeview 06:02:26 -58.4 Dark Up 50.2 116.5 Up 05:57:56 - 06:06:55 3587
Cedarville 06:02:27 -58.8 Dark Up 50.6 116.0 Up 05:57:58 - 06:06:57 3522
Fall River/Burney 06:02:32 -58.2 Dark Up 50.0 114.2 Up 05:58:02 - 06:07:01 3503
Susanville 06:02:31 -59.0 Dark Up 50.7 114.3 Up 05:58:02 - 06:07:01 3428
Greenville 06:02:33 -58.9 Dark Up 50.6 113.7 Up 05:58:03 - 06:07:02 3409
Gimple 06:02:32 -59.0 Dark Up 50.7 113.7 Up 05:58:03 - 06:07:02 3407
Quincy 06:02:33 -59.0 Dark Up 50.7 113.4 Up 05:58:04 - 06:07:03 3390
Portola 06:02:32 -59.4 Dark Up 51.1 113.8 Up 05:58:02 - 06:07:01 3368
Reno 06:02:31 -59.9 Dark Up 51.7 114.1 Up 05:58:01 - 06:07:00 3328
Carson City 06:02:31 -60.1 Dark Up 51.8 113.7 Up 05:58:02 - 06:07:01 3294
Gardnerville 06:02:31 -60.2 Dark Up 52.0 113.5 Up 05:58:02 - 06:07:01 3270
Yerington 06:02:30 -60.6 Dark Up 52.4 114.2 Up 05:58:00 - 06:06:59 3262
Hawthorne 06:02:29 -61.2 Dark Up 52.9 114.2 Up 05:58:00 - 06:06:59 3206
Lee Vining 06:02:32 -61.1 Dark Up 52.8 113.0 Up 05:58:02 - 06:07:01 3162
Tonopah 06:02:25 -62.4 Dark Up 54.1 115.1 Up 05:57:56 - 06:06:55 3131
Niwot 06:01:40 -68.6 Dark Up 60.6 133.3 Up 05:57:10 - 06:06:09 3105
Bishop 06:02:31 -61.8 Dark Up 53.6 113.0 Up 05:58:02 - 06:07:01 3088
Beatty 06:02:26 -63.2 Dark Up 54.9 114.1 Up 05:57:57 - 06:06:56 3008
Lone Pine 06:02:31 -62.4 Dark Up 54.1 112.4 Up 05:58:02 - 06:07:01 3007
Indian Springs 06:02:23 -64.1 Dark Up 55.8 114.8 Up 05:57:54 - 06:06:53 2953
CPSLO 06:02:43 -60.8 Dark Up 52.6 108.3 Up 05:58:13 - 06:07:12 2937
Henderson 06:02:22 -64.8 Dark Up 56.6 114.8 Up 05:57:52 - 06:06:51 2886
Searchlight/Boulder City 06:02:23 -65.1 Dark Up 56.9 114.1 Up 05:57:53 - 06:06:52 2828
Patrick 06:02:19 -65.9 Dark Up 57.7 115.2 Up 05:57:50 - 06:06:49 2800
Laughlin/Bullhead City 06:02:22 -65.5 Dark Up 57.2 114.1 Up 05:57:53 - 06:06:52 2790
Kingman/Dolan Springs 06:02:20 -65.9 Dark Up 57.6 114.7 Up 05:57:51 - 06:06:50 2782
Wildwood 06:02:38 -62.8 Dark Up 54.6 108.6 Up 05:58:09 - 06:07:08 2771
Mohave Valley 06:02:23 -65.6 Dark Up 57.4 113.7 Up 05:57:53 - 06:06:52 2763
DCO 06:02:17 -66.6 Dark Up 58.3 115.6 Up 05:57:48 - 06:06:47 2755
Lake Havasu City 06:02:23 -65.9 Dark Up 57.7 113.4 Up 05:57:53 - 06:06:52 2718
Idyllwild 06:02:33 -64.4 Dark Up 56.2 109.9 Up 05:58:03 - 06:07:02 2693
Parker 06:02:23 -66.1 Dark Up 57.9 112.9 Up 05:57:54 - 06:06:53 2682
Blythe 06:02:25 -66.0 Dark Up 57.8 111.8 Up 05:57:56 - 06:06:55 2635
Calipatria 06:02:30 -65.5 Dark Up 57.3 110.2 Up 05:58:00 - 06:06:59 2606
Yuma 06:02:27 -66.3 Dark Up 58.1 110.4 Up 05:57:58 - 06:06:57 2542

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 13WV107, (2017/12/30 06:00UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 13.95  56
Alhena         06:37:42.8 +16:23:57  1.9  6.54  40
45 Gem         07:08:22.0 +15:55:48  6.4  1.98  48
PPM 123470     07:04:21.5 +18:04:01  8.4  0.38  47
PPM 123465     07:04:13.3 +17:43:47  8.7  0.08  47
13WV107        07:04:32.3 +17:41:27 14.9        47
Positions are for J2000

Event circumstances last updated at 2017/05/15 18:04:28 UT

Marc W. Buie, Southwest Research Institute

RECON