RECON: TNO occultation with 13WV107

Event between 13WV107 and star UC4-539-035872 with event index number of 99957

Geocentric closest approach at 2018/01/15 03:01:51 UTC

J2000 position of star is 06:59:51.8 +17:36:19
Equinox of date position of star is 07:00:54.3 +17:34:45
Stellar brightness R=16.0, use SENSEUP=128
Star is 169 degrees from the moon. Moon is 4% 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 21.0 km/sec on the sky relative to the star, or, 10.4 arcsec/hr.
The 1-sigma error in the time of the event is 123 seconds.
The 1-sigma cross-track error in the shadow position is 1501 km.
The sky-plane scale is 7302.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=56.5 km assuming a 5% albedo -- 2.7 sec chord
Diameter=23.1 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13WV107, (2018/01/15 03:02UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:25.0 +27:58:52  1.1 14.75 158
Alhena         06:38:45.2 +16:22:57  1.9  5.43 174
PPM 123373     07:01:20.0 +15:30:31  6.4  2.07 168
PPM 123351     07:00:24.4 +17:30:34  8.3  0.14 169
13WV107        07:00:54.7 +17:34:45 16.0       169
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 17.9 km RECON observability=1.0 and success probability=2.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:04:40 -25.1 Dark Down 30.4 98.0 Up 02:53:54 - 03:15:25 5497
Tonasket 03:04:40 -25.1 Dark Down 30.4 97.8 Up 02:53:55 - 03:15:26 5479
Okanogan 03:04:42 -25.0 Dark Down 30.3 97.5 Up 02:53:56 - 03:15:27 5457
Brewster 03:04:43 -24.8 Dark Down 30.2 97.2 Up 02:53:58 - 03:15:29 5441
Manson/Chelan 03:04:44 -24.6 Dark Down 30.0 96.8 Up 02:53:59 - 03:15:30 5433
Entiat 03:04:46 -24.5 Dark Down 30.0 96.6 Up 02:54:00 - 03:15:31 5417
Wenatchee 03:04:47 -24.4 Dark Down 30.0 96.4 Low 02:54:01 - 03:15:32 5400
Ellensburg 03:04:48 -24.2 Dark Down 29.9 96.0 Low 02:54:03 - 03:15:34 5373
Yakima 03:04:50 -24.2 Dark Down 29.9 95.8 Low 02:54:05 - 03:15:36 5341
Toppenish/White Swan 03:04:51 -24.3 Dark Down 30.1 95.8 Up 02:54:05 - 03:15:36 5320
Goldendale 03:04:53 -23.9 Dark Down 29.8 95.1 Low 02:54:08 - 03:15:39 5286
Pasco 03:04:49 -25.1 Dark Down 30.9 96.7 Up 02:54:03 - 03:15:34 5281
The Dalles 03:04:55 -23.7 Dark Down 29.6 94.7 Low 02:54:09 - 03:15:40 5277
George/Umatilla 03:04:51 -25.0 Dark Down 30.8 96.3 Up 02:54:05 - 03:15:36 5260
PNWRO 03:04:50 -25.3 Dark Down 31.1 96.7 Up 02:54:04 - 03:15:35 5256
Maupin 03:04:56 -23.7 Dark Down 29.7 94.6 Low 02:54:10 - 03:15:41 5241
Madras/Culver 03:04:58 -23.6 Dark Down 29.7 94.2 Low 02:54:13 - 03:15:44 5198
Sisters 03:05:00 -23.3 Dark Down 29.4 93.7 Low 02:54:14 - 03:15:45 5182
Redmond 03:04:59 -23.5 Dark Down 29.7 94.0 Low 02:54:14 - 03:15:45 5170
Bend 03:05:00 -23.4 Dark Down 29.6 93.8 Low 02:54:15 - 03:15:46 5156
Oregon Observatory 03:05:01 -23.3 Dark Down 29.5 93.6 Low 02:54:16 - 03:15:47 5145
La Pine/Gilchrist 03:05:02 -23.2 Dark Down 29.5 93.4 Low 02:54:17 - 03:15:48 5130
North Lake 03:05:02 -23.6 Dark Down 30.0 93.6 Low 02:54:17 - 03:15:48 5079
Chiloquin 03:05:06 -22.8 Dark Down 29.3 92.6 Low 02:54:21 - 03:15:52 5047
Paisley 03:05:04 -23.8 Dark Down 30.3 93.6 Up 02:54:19 - 03:15:50 5025
Klamath Falls 03:05:08 -22.8 Dark Down 29.4 92.4 Low 02:54:22 - 03:15:53 5016
Tulelake 03:05:08 -23.0 Dark Down 29.6 92.5 Low 02:54:23 - 03:15:54 4986
Lakeview 03:05:06 -23.9 Dark Down 30.5 93.4 Up 02:54:20 - 03:15:51 4978
Cedarville 03:05:07 -23.9 Dark Down 30.6 93.2 Up 02:54:22 - 03:15:53 4918
Fall River/Burney 03:05:11 -23.0 Dark Down 29.8 92.0 Low 02:54:26 - 03:15:57 4908
Susanville 03:05:12 -23.4 Dark Down 30.3 92.2 Up 02:54:27 - 03:15:58 4835
Greenville 03:05:13 -23.2 Dark Down 30.1 91.8 Up 02:54:28 - 03:15:59 4819
Gimple 03:05:13 -23.2 Dark Down 30.2 91.9 Up 02:54:28 - 03:15:59 4817
Quincy 03:05:14 -23.1 Dark Down 30.1 91.7 Up 02:54:28 - 03:15:59 4801
Portola 03:05:14 -23.5 Dark Down 30.5 92.0 Up 02:54:28 - 03:15:59 4778
Reno 03:05:13 -23.9 Dark Down 31.0 92.2 Up 02:54:28 - 03:15:59 4739
Carson City 03:05:15 -23.9 Dark Down 31.1 92.0 Up 02:54:29 - 03:16:00 4707
Gardnerville 03:05:15 -23.9 Dark Down 31.1 91.9 Up 02:54:30 - 03:16:01 4684
Yerington 03:05:14 -24.4 Dark Down 31.6 92.3 Up 02:54:29 - 03:16:00 4673
Hawthorne 03:05:15 -24.7 Dark Down 32.0 92.4 Up 02:54:29 - 03:16:00 4619
Lee Vining 03:05:17 -24.3 Dark Down 31.6 91.7 Up 02:54:32 - 03:16:03 4581
Tonopah 03:05:13 -25.7 Dark Down 33.1 93.0 Up 02:54:28 - 03:15:59 4541
Bishop 03:05:18 -24.7 Dark Down 32.2 91.8 Up 02:54:32 - 03:16:03 4509
Niwot 03:04:40 -35.1 Dark Down 42.0 103.1 Up 02:53:55 - 03:15:26 4433
Lone Pine 03:05:20 -24.9 Dark Down 32.5 91.5 Up 02:54:34 - 03:16:05 4432
Beatty 03:05:16 -26.0 Dark Down 33.5 92.5 Up 02:54:31 - 03:16:02 4425
CPSLO 03:05:28 -22.6 Dark Down 30.5 89.2 Up 02:54:43 - 03:16:14 4383
Indian Springs 03:05:15 -26.8 Dark Down 34.4 93.0 Up 02:54:29 - 03:16:00 4367
Henderson 03:05:15 -27.3 Dark Down 35.0 93.0 Up 02:54:30 - 03:16:01 4300
Searchlight/Boulder City 03:05:17 -27.2 Dark Down 35.1 92.7 Up 02:54:31 - 03:16:02 4245
Wildwood 03:05:28 -24.1 Dark Down 32.1 89.6 Up 02:54:42 - 03:16:13 4216
Patrick 03:05:14 -28.1 Dark Down 35.9 93.3 Up 02:54:29 - 03:16:00 4212
Laughlin/Bullhead City 03:05:17 -27.5 Dark Down 35.4 92.7 Up 02:54:31 - 03:16:02 4208
Kingman/Dolan Springs 03:05:16 -27.9 Dark Down 35.8 93.0 Up 02:54:30 - 03:16:01 4197
Mohave Valley 03:05:18 -27.5 Dark Down 35.4 92.5 Up 02:54:32 - 03:16:03 4183
DCO 03:05:14 -28.6 Dark Down 36.5 93.5 Up 02:54:28 - 03:15:59 4165
Lake Havasu City 03:05:18 -27.6 Dark Down 35.6 92.3 Up 02:54:33 - 03:16:04 4139
Idyllwild 03:05:25 -25.6 Dark Down 33.7 90.5 Up 02:54:40 - 03:16:11 4131
Parker 03:05:19 -27.6 Dark Down 35.7 92.1 Up 02:54:34 - 03:16:05 4105
Blythe 03:05:21 -27.3 Dark Down 35.4 91.6 Up 02:54:36 - 03:16:07 4063
Calipatria 03:05:24 -26.4 Dark Down 34.7 90.7 Up 02:54:39 - 03:16:10 4042
Yuma 03:05:24 -27.1 Dark Down 35.4 90.9 Up 02:54:38 - 03:16:09 3977

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, (2018/01/15 03:02UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 14.75 158
Alhena         06:37:42.8 +16:23:57  1.9  5.43 174
PPM 123373     07:00:18.1 +15:32:06  6.4  2.07 168
PPM 123351     06:59:21.6 +17:32:08  8.3  0.14 169
13WV107        06:59:51.8 +17:36:19 16.0       169
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:11:04 UT

Marc W. Buie, Southwest Research Institute

RECON