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 07:00:52.4 +17:34:48
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 49 seconds.
The 1-sigma cross-track error in the shadow position is 656 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         07:46:25.1 +27:58:52  1.1 14.76 158
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=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:04:39 -25.1 Dark Down 30.4 98.0 Up 03:00:05 - 03:09:13 5491
Tonasket 03:04:40 -25.1 Dark Down 30.4 97.8 Up 03:00:06 - 03:09:14 5474
Okanogan 03:04:42 -25.0 Dark Down 30.3 97.5 Up 03:00:08 - 03:09:16 5451
Brewster 03:04:43 -24.8 Dark Down 30.2 97.2 Up 03:00:09 - 03:09:17 5435
Manson/Chelan 03:04:44 -24.6 Dark Down 30.0 96.8 Up 03:00:10 - 03:09:18 5427
Entiat 03:04:45 -24.5 Dark Down 30.0 96.6 Up 03:00:11 - 03:09:19 5411
Wenatchee 03:04:46 -24.4 Dark Down 30.0 96.4 Low 03:00:12 - 03:09:20 5394
Ellensburg 03:04:48 -24.2 Dark Down 29.9 96.0 Low 03:00:14 - 03:09:22 5366
Yakima 03:04:49 -24.2 Dark Down 29.9 95.8 Low 03:00:15 - 03:09:23 5335
Toppenish/White Swan 03:04:50 -24.3 Dark Down 30.0 95.8 Up 03:00:16 - 03:09:24 5314
Goldendale 03:04:52 -23.9 Dark Down 29.8 95.1 Low 03:00:18 - 03:09:26 5280
Pasco 03:04:48 -25.1 Dark Down 30.9 96.7 Up 03:00:14 - 03:09:22 5275
The Dalles 03:04:54 -23.7 Dark Down 29.6 94.7 Low 03:00:20 - 03:09:28 5270
George/Umatilla 03:04:50 -25.0 Dark Down 30.8 96.3 Up 03:00:16 - 03:09:24 5253
PNWRO 03:04:49 -25.3 Dark Down 31.1 96.7 Up 03:00:15 - 03:09:23 5250
Maupin 03:04:55 -23.7 Dark Down 29.7 94.6 Low 03:00:21 - 03:09:29 5234
Madras/Culver 03:04:57 -23.6 Dark Down 29.7 94.2 Low 03:00:23 - 03:09:31 5192
Sisters 03:04:59 -23.3 Dark Down 29.4 93.7 Low 03:00:25 - 03:09:33 5175
Redmond 03:04:58 -23.5 Dark Down 29.7 94.0 Low 03:00:24 - 03:09:32 5164
Bend 03:05:00 -23.4 Dark Down 29.6 93.8 Low 03:00:26 - 03:09:34 5150
Oregon Observatory 03:05:01 -23.3 Dark Down 29.5 93.6 Low 03:00:27 - 03:09:35 5139
La Pine/Gilchrist 03:05:02 -23.2 Dark Down 29.5 93.4 Low 03:00:28 - 03:09:36 5124
North Lake 03:05:02 -23.6 Dark Down 30.0 93.6 Low 03:00:28 - 03:09:36 5073
Chiloquin 03:05:06 -22.8 Dark Down 29.3 92.6 Low 03:00:32 - 03:09:40 5041
Paisley 03:05:03 -23.8 Dark Down 30.3 93.6 Up 03:00:29 - 03:09:37 5019
Klamath Falls 03:05:07 -22.8 Dark Down 29.4 92.4 Low 03:00:33 - 03:09:41 5010
Tulelake 03:05:08 -23.0 Dark Down 29.6 92.5 Low 03:00:34 - 03:09:42 4980
Lakeview 03:05:05 -23.9 Dark Down 30.5 93.4 Up 03:00:31 - 03:09:39 4972
Cedarville 03:05:07 -23.9 Dark Down 30.6 93.1 Up 03:00:33 - 03:09:41 4912
Fall River/Burney 03:05:11 -23.0 Dark Down 29.7 92.0 Low 03:00:37 - 03:09:45 4901
Susanville 03:05:12 -23.4 Dark Down 30.3 92.2 Up 03:00:38 - 03:09:46 4829
Greenville 03:05:13 -23.2 Dark Down 30.1 91.8 Up 03:00:39 - 03:09:47 4812
Gimple 03:05:13 -23.2 Dark Down 30.2 91.9 Up 03:00:39 - 03:09:47 4810
Quincy 03:05:13 -23.1 Dark Down 30.1 91.7 Up 03:00:39 - 03:09:47 4795
Portola 03:05:13 -23.5 Dark Down 30.5 92.0 Up 03:00:39 - 03:09:47 4772
Reno 03:05:13 -23.9 Dark Down 31.0 92.2 Up 03:00:39 - 03:09:47 4732
Carson City 03:05:14 -23.9 Dark Down 31.1 92.0 Up 03:00:40 - 03:09:48 4700
Gardnerville 03:05:15 -23.9 Dark Down 31.1 91.9 Up 03:00:41 - 03:09:49 4678
Yerington 03:05:13 -24.4 Dark Down 31.5 92.3 Up 03:00:39 - 03:09:47 4667
Hawthorne 03:05:14 -24.7 Dark Down 32.0 92.4 Up 03:00:40 - 03:09:48 4612
Lee Vining 03:05:17 -24.3 Dark Down 31.6 91.7 Up 03:00:43 - 03:09:51 4575
Tonopah 03:05:13 -25.7 Dark Down 33.1 93.0 Up 03:00:39 - 03:09:47 4534
Bishop 03:05:17 -24.7 Dark Down 32.2 91.8 Up 03:00:43 - 03:09:51 4502
Niwot 03:04:40 -35.1 Dark Down 42.0 103.1 Up 03:00:06 - 03:09:14 4427
Lone Pine 03:05:19 -24.9 Dark Down 32.5 91.5 Up 03:00:45 - 03:09:53 4425
Beatty 03:05:16 -26.0 Dark Down 33.5 92.5 Up 03:00:42 - 03:09:50 4418
CPSLO 03:05:28 -22.6 Dark Down 30.4 89.2 Up 03:00:54 - 03:10:02 4376
Indian Springs 03:05:14 -26.8 Dark Down 34.4 93.0 Up 03:00:40 - 03:09:48 4360
Henderson 03:05:14 -27.3 Dark Down 35.0 93.0 Up 03:00:40 - 03:09:48 4293
Searchlight/Boulder City 03:05:16 -27.2 Dark Down 35.1 92.7 Up 03:00:42 - 03:09:50 4238
Wildwood 03:05:28 -24.1 Dark Down 32.1 89.6 Up 03:00:54 - 03:10:02 4209
Patrick 03:05:14 -28.1 Dark Down 35.9 93.3 Up 03:00:40 - 03:09:48 4205
Laughlin/Bullhead City 03:05:16 -27.5 Dark Down 35.4 92.7 Up 03:00:42 - 03:09:50 4201
Kingman/Dolan Springs 03:05:15 -27.9 Dark Down 35.8 93.0 Up 03:00:41 - 03:09:49 4190
Mohave Valley 03:05:17 -27.4 Dark Down 35.4 92.5 Up 03:00:43 - 03:09:51 4175
DCO 03:05:13 -28.6 Dark Down 36.5 93.5 Up 03:00:39 - 03:09:47 4158
Lake Havasu City 03:05:18 -27.6 Dark Down 35.6 92.3 Up 03:00:44 - 03:09:52 4131
Idyllwild 03:05:25 -25.6 Dark Down 33.7 90.5 Up 03:00:51 - 03:09:59 4125
Parker 03:05:18 -27.6 Dark Down 35.7 92.1 Up 03:00:44 - 03:09:52 4097
Blythe 03:05:20 -27.3 Dark Down 35.4 91.6 Up 03:00:46 - 03:09:54 4056
Calipatria 03:05:24 -26.4 Dark Down 34.7 90.7 Up 03:00:50 - 03:09:58 4034
Yuma 03:05:23 -27.1 Dark Down 35.4 90.9 Up 03:00:49 - 03:09:57 3969

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 14.76 158
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 2017/05/15 18:04:57 UT

Marc W. Buie, Southwest Research Institute

RECON