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 02:59:06 UTC

J2000 position of star is 06:59:51.8 +17:36:19
Equinox of date position of star is 07:00:54.4 +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=20.6

[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 63 seconds.
The 1-sigma cross-track error in the shadow position is 806 km.
The sky-plane scale is 7302.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.3
Diameter=56.5 km assuming a 5% albedo -- 2.5 sec chord
Diameter=23.1 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 13WV107, (2018/01/15 02:59UT)
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 17.8 km RECON observability=1.0 and success probability=0.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 03:01:54 -24.7 Dark Down 29.9 97.4 Low 02:56:09 - 03:07:39 4262
Tonasket 03:01:55 -24.7 Dark Down 29.9 97.3 Low 02:56:10 - 03:07:40 4244
Okanogan 03:01:57 -24.5 Dark Down 29.9 97.0 Low 02:56:12 - 03:07:42 4222
Brewster 03:01:58 -24.4 Dark Down 29.8 96.7 Low 02:56:13 - 03:07:43 4205
Manson/Chelan 03:01:59 -24.1 Dark Down 29.6 96.3 Low 02:56:14 - 03:07:44 4197
Entiat 03:02:00 -24.0 Dark Down 29.5 96.1 Low 02:56:15 - 03:07:45 4182
Wenatchee 03:02:01 -24.0 Dark Down 29.5 95.9 Low 02:56:16 - 03:07:46 4165
Ellensburg 03:02:03 -23.8 Dark Down 29.4 95.5 Low 02:56:18 - 03:07:48 4137
Yakima 03:02:05 -23.7 Dark Down 29.4 95.2 Low 02:56:20 - 03:07:50 4106
Toppenish/White Swan 03:02:05 -23.8 Dark Down 29.6 95.2 Low 02:56:20 - 03:07:50 4085
Goldendale 03:02:08 -23.5 Dark Down 29.3 94.6 Low 02:56:23 - 03:07:53 4051
Pasco 03:02:04 -24.7 Dark Down 30.5 96.1 Up 02:56:19 - 03:07:49 4046
The Dalles 03:02:09 -23.2 Dark Down 29.1 94.2 Low 02:56:24 - 03:07:54 4042
George/Umatilla 03:02:05 -24.5 Dark Down 30.3 95.8 Up 02:56:20 - 03:07:50 4025
PNWRO 03:02:04 -24.8 Dark Down 30.6 96.2 Up 02:56:19 - 03:07:49 4021
Maupin 03:02:11 -23.2 Dark Down 29.2 94.1 Low 02:56:26 - 03:07:56 4006
Madras/Culver 03:02:13 -23.1 Dark Down 29.2 93.7 Low 02:56:28 - 03:07:58 3963
Sisters 03:02:15 -22.8 Dark Down 28.9 93.2 Low 02:56:30 - 03:08:00 3947
Redmond 03:02:14 -23.0 Dark Down 29.2 93.5 Low 02:56:29 - 03:07:59 3936
Bend 03:02:15 -22.9 Dark Down 29.1 93.3 Low 02:56:30 - 03:08:00 3922
Oregon Observatory 03:02:16 -22.8 Dark Down 29.0 93.1 Low 02:56:31 - 03:08:01 3911
La Pine/Gilchrist 03:02:17 -22.7 Dark Down 29.0 93.0 Low 02:56:32 - 03:08:02 3896
North Lake 03:02:17 -23.1 Dark Down 29.5 93.1 Low 02:56:32 - 03:08:02 3845
Chiloquin 03:02:21 -22.3 Dark Down 28.8 92.1 Low 02:56:36 - 03:08:06 3813
Paisley 03:02:19 -23.3 Dark Down 29.8 93.1 Low 02:56:34 - 03:08:04 3791
Klamath Falls 03:02:22 -22.3 Dark Down 28.9 92.0 Low 02:56:37 - 03:08:07 3783
Tulelake 03:02:22 -22.5 Dark Down 29.1 92.0 Low 02:56:37 - 03:08:07 3753
Lakeview 03:02:20 -23.4 Dark Down 30.0 92.9 Low 02:56:35 - 03:08:05 3744
Cedarville 03:02:22 -23.4 Dark Down 30.1 92.7 Up 02:56:37 - 03:08:07 3684
Fall River/Burney 03:02:26 -22.4 Dark Down 29.2 91.6 Low 02:56:41 - 03:08:11 3674
Susanville 03:02:27 -22.9 Dark Down 29.8 91.7 Low 02:56:42 - 03:08:12 3602
Greenville 03:02:28 -22.6 Dark Down 29.6 91.4 Low 02:56:43 - 03:08:13 3586
Gimple 03:02:28 -22.7 Dark Down 29.7 91.4 Low 02:56:43 - 03:08:13 3583
Quincy 03:02:29 -22.6 Dark Down 29.6 91.3 Low 02:56:44 - 03:08:14 3568
Portola 03:02:29 -23.0 Dark Down 30.0 91.5 Low 02:56:44 - 03:08:14 3545
Reno 03:02:28 -23.4 Dark Down 30.5 91.8 Up 02:56:43 - 03:08:13 3506
Carson City 03:02:30 -23.4 Dark Down 30.5 91.6 Up 02:56:45 - 03:08:15 3474
Gardnerville 03:02:30 -23.4 Dark Down 30.6 91.5 Up 02:56:45 - 03:08:15 3451
Yerington 03:02:29 -23.8 Dark Down 31.0 91.9 Up 02:56:44 - 03:08:14 3440
Hawthorne 03:02:30 -24.2 Dark Down 31.4 91.9 Up 02:56:45 - 03:08:15 3386
Lee Vining 03:02:32 -23.7 Dark Down 31.1 91.3 Up 02:56:47 - 03:08:17 3349
Tonopah 03:02:29 -25.2 Dark Down 32.6 92.5 Up 02:56:44 - 03:08:14 3308
Bishop 03:02:33 -24.2 Dark Down 31.7 91.4 Up 02:56:48 - 03:08:18 3276
Lone Pine 03:02:34 -24.3 Dark Down 32.0 91.1 Up 02:56:49 - 03:08:19 3199
Niwot 03:01:56 -34.6 Dark Down 41.5 102.5 Up 02:56:11 - 03:07:41 3198
Beatty 03:02:31 -25.4 Dark Down 33.0 92.1 Up 02:56:46 - 03:08:16 3192
CPSLO 03:02:43 -22.1 Dark Down 29.9 88.8 Low 02:56:58 - 03:08:28 3151
Indian Springs 03:02:30 -26.2 Dark Down 33.9 92.5 Up 02:56:45 - 03:08:15 3134
Henderson 03:02:30 -26.7 Dark Down 34.4 92.6 Up 02:56:45 - 03:08:15 3067
Searchlight/Boulder City 03:02:32 -26.7 Dark Down 34.5 92.3 Up 02:56:47 - 03:08:17 3012
Wildwood 03:02:43 -23.5 Dark Down 31.6 89.3 Up 02:56:58 - 03:08:28 2984
Patrick 03:02:30 -27.5 Dark Down 35.4 92.9 Up 02:56:45 - 03:08:15 2980
Laughlin/Bullhead City 03:02:32 -26.9 Dark Down 34.8 92.3 Up 02:56:47 - 03:08:17 2976
Kingman/Dolan Springs 03:02:31 -27.3 Dark Down 35.2 92.6 Up 02:56:46 - 03:08:16 2964
Mohave Valley 03:02:33 -26.9 Dark Down 34.8 92.1 Up 02:56:48 - 03:08:18 2950
DCO 03:02:29 -28.1 Dark Down 36.0 93.1 Up 02:56:44 - 03:08:14 2932
Lake Havasu City 03:02:33 -27.0 Dark Down 35.1 91.9 Up 02:56:48 - 03:08:18 2906
Idyllwild 03:02:40 -25.0 Dark Down 33.1 90.1 Up 02:56:55 - 03:08:25 2899
Parker 03:02:34 -27.0 Dark Down 35.1 91.7 Up 02:56:49 - 03:08:19 2872
Blythe 03:02:36 -26.7 Dark Down 34.9 91.2 Up 02:56:51 - 03:08:21 2831
Calipatria 03:02:40 -25.9 Dark Down 34.1 90.3 Up 02:56:55 - 03:08:25 2810
Yuma 03:02:39 -26.5 Dark Down 34.9 90.5 Up 02:56:54 - 03:08:24 2745

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 02:59UT)
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 2017/12/16 18:25:31 UT

Marc W. Buie, Southwest Research Institute

RECON