RECON: TNO occultation with 10TH

Event between 10TH and star UC4-471-011981 with event index number of 153164

Geocentric closest approach at 2018/09/12 11:25:04 UTC

J2000 position of star is 05:33:36.8 +04:01:44
Equinox of date position of star is 05:34:31.9 +04:02:23
Stellar brightness R=16.0, use SENSEUP=128
Star is 123 degrees from the moon. Moon is 10% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 17.9 AU from the Sun and 17.9 AU from the Earth.
The TNO is moving 10.7 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is 962 km.
The sky-plane scale is 12973.0 km/arcsec.

The TNO has an absolute magnitude Hv=9.2
Diameter=88.3 km assuming a 5% albedo -- 8.3 sec chord
Diameter=36.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10TH, (2018/09/12 11:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.1 +07:24:33  0.4  6.34 118
Bellatrix      05:26:08.1 +06:21:54  1.6  3.14 125
PPM 149151     05:35:43.3 +05:40:20  6.4  1.66 123
PPM 149085     05:32:26.4 +04:19:41  8.2  0.61 123
PPM 149140     05:35:12.9 +03:42:48  9.9  0.36 123
PPM 149128     05:34:20.7 +04:06:43 11.7  0.10 123
10TH           05:34:36.1 +04:02:26 16.0       123
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 17.2 km RECON observability=1.0 and success probability=34.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:17:03 -21.1 Dark Down 32.6 127.4 Up 11:08:05 - 11:26:02 -38
Tonasket 11:17:03 -21.3 Dark Down 32.7 127.3 Up 11:08:05 - 11:26:02 -60
Okanogan 11:17:03 -21.5 Dark Down 32.9 126.9 Up 11:08:05 - 11:26:02 -98
Brewster 11:17:03 -21.8 Dark Down 32.9 126.6 Up 11:08:04 - 11:26:01 -130
Manson/Chelan 11:17:01 -22.1 Dark Down 32.8 126.1 Up 11:08:03 - 11:26:00 -163
Entiat 11:17:01 -22.3 Dark Down 32.9 125.9 Up 11:08:03 - 11:26:00 -187
Wenatchee 11:17:01 -22.5 Dark Down 33.0 125.7 Up 11:08:02 - 11:25:59 -214
Niwot 11:18:31 -15.8 AT Down 46.2 138.2 Up 11:09:33 - 11:27:30 -252
Ellensburg 11:17:01 -22.9 Dark Down 33.1 125.2 Up 11:08:02 - 11:25:59 -262
Pasco 11:17:08 -22.4 Dark Down 34.4 126.3 Up 11:08:09 - 11:26:06 -283
PNWRO 11:17:09 -22.4 Dark Down 34.7 126.4 Up 11:08:11 - 11:26:08 -299
Yakima 11:17:01 -23.1 Dark Down 33.4 125.0 Up 11:08:02 - 11:25:59 -302
Toppenish/White Swan 11:17:02 -23.1 Dark Down 33.6 125.1 Up 11:08:04 - 11:26:01 -317
George/Umatilla 11:17:07 -22.7 Dark Down 34.5 125.9 Up 11:08:09 - 11:26:06 -323
Goldendale 11:17:01 -23.7 Dark Down 33.7 124.3 Up 11:08:02 - 11:25:59 -385
The Dalles 11:17:00 -24.0 Dark Down 33.6 123.8 Up 11:08:01 - 11:25:58 -420
Maupin 11:17:01 -24.2 Dark Down 33.9 123.7 Up 11:08:02 - 11:25:59 -457
Madras/Culver 11:17:01 -24.5 Dark Down 34.1 123.4 Up 11:08:03 - 11:26:00 -512
Redmond 11:17:02 -24.7 Dark Down 34.3 123.1 Up 11:08:03 - 11:26:00 -549
Sisters 11:17:00 -25.0 Dark Down 34.1 122.7 Up 11:08:01 - 11:25:58 -561
Bend 11:17:01 -24.9 Dark Down 34.3 122.9 Up 11:08:03 - 11:26:00 -575
Oregon Observatory 11:17:01 -25.1 Dark Down 34.4 122.6 Up 11:08:03 - 11:26:00 -596
La Pine/Gilchrist 11:17:01 -25.3 Dark Down 34.4 122.5 Up 11:08:03 - 11:26:00 -619
North Lake 11:17:05 -25.1 Dark Down 35.0 122.8 Up 11:08:06 - 11:26:03 -639
Paisley 11:17:08 -25.2 Dark Down 35.6 122.8 Up 11:08:09 - 11:26:06 -680
Lakeview 11:17:09 -25.4 Dark Down 36.0 122.7 Up 11:08:11 - 11:26:08 -722
Chiloquin 11:17:02 -26.1 Dark Down 34.8 121.5 Up 11:08:03 - 11:26:00 -741
Klamath Falls 11:17:03 -26.2 Dark Down 35.0 121.4 Up 11:08:04 - 11:26:01 -772
Cedarville 11:17:11 -25.6 Dark Down 36.4 122.5 Up 11:08:13 - 11:26:10 -780
Tulelake 11:17:04 -26.2 Dark Down 35.4 121.5 Up 11:08:06 - 11:26:03 -787
Fall River/Burney 11:17:07 -26.6 Dark Down 35.9 121.0 Up 11:08:08 - 11:26:05 -874
Susanville 11:17:11 -26.5 Dark Down 36.7 121.3 Up 11:08:13 - 11:26:10 -908
Gimple 11:17:11 -26.8 Dark Down 36.7 121.0 Up 11:08:13 - 11:26:10 -943
Greenville 11:17:11 -26.8 Dark Down 36.7 120.9 Up 11:08:12 - 11:26:09 -946
Portola 11:17:14 -26.7 Dark Down 37.2 121.1 Up 11:08:15 - 11:26:12 -960
Reno 11:17:17 -26.4 Dark Down 37.7 121.6 Up 11:08:19 - 11:26:16 -960
Quincy 11:17:11 -26.9 Dark Down 36.8 120.8 Up 11:08:13 - 11:26:10 -966
Yerington 11:17:22 -26.2 Dark Down 38.5 121.9 Up 11:08:24 - 11:26:21 -988
Carson City 11:17:19 -26.6 Dark Down 37.9 121.4 Up 11:08:20 - 11:26:17 -995
Tonopah 11:17:34 -25.3 Dark Down 40.3 123.1 Up 11:08:36 - 11:26:33 -998
Hawthorne 11:17:26 -26.1 Dark Down 39.1 122.1 Up 11:08:27 - 11:26:24 -1012
Gardnerville 11:17:19 -26.6 Dark Down 38.1 121.3 Up 11:08:21 - 11:26:18 -1017
Indian Springs 11:17:46 -24.9 Dark Down 42.2 123.6 Up 11:08:47 - 11:26:44 -1074
Lee Vining 11:17:25 -26.7 Dark Down 39.0 121.2 Up 11:08:27 - 11:26:24 -1087
Beatty 11:17:40 -25.5 Dark Down 41.2 122.8 Up 11:08:41 - 11:26:38 -1090
Henderson 11:17:51 -24.6 Dark Down 42.9 123.9 Up 11:08:53 - 11:26:50 -1093
DCO 11:18:05 -23.6 Dark Down 44.7 125.1 Up 11:09:06 - 11:27:03 -1097
Patrick 11:18:00 -24.0 Dark Down 44.1 124.6 Up 11:09:01 - 11:26:58 -1102
Bishop 11:17:30 -26.5 Dark Down 39.9 121.5 Up 11:08:32 - 11:26:29 -1115
Kingman/Dolan Springs 11:17:59 -24.2 Dark Down 44.1 124.3 Up 11:09:01 - 11:26:58 -1132
Searchlight/Boulder City 11:17:54 -24.8 Dark Down 43.3 123.6 Up 11:08:55 - 11:26:52 -1145
Laughlin/Bullhead City 11:17:57 -24.6 Dark Down 43.7 123.7 Up 11:08:58 - 11:26:55 -1158
Lone Pine 11:17:34 -26.6 Dark Down 40.5 121.3 Up 11:08:36 - 11:26:33 -1175
Mohave Valley 11:17:58 -24.7 Dark Down 43.9 123.5 Up 11:08:59 - 11:26:56 -1184
Lake Havasu City 11:18:00 -24.7 Dark Down 44.3 123.4 Up 11:09:02 - 11:26:59 -1210
Parker 11:18:02 -24.8 Dark Down 44.5 123.2 Up 11:09:03 - 11:27:00 -1242
Blythe 11:18:02 -25.3 Dark Down 44.6 122.4 Up 11:09:04 - 11:27:01 -1306
Idyllwild 11:17:50 -26.8 Dark Down 43.0 120.4 Up 11:08:51 - 11:26:48 -1394
Yuma 11:18:05 -25.7 Dark Down 45.0 121.6 Up 11:09:07 - 11:27:04 -1397
Calipatria 11:17:59 -26.2 Dark Down 44.2 121.1 Up 11:09:00 - 11:26:57 -1398
CPSLO 11:17:25 -29.1 Dark Down 39.3 117.9 Up 11:08:27 - 11:26:24 -1412
Wildwood 11:17:39 -28.1 Dark Down 41.4 118.9 Up 11:08:41 - 11:26:38 -1443

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 10TH, (2018/09/12 11:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.34 118
Bellatrix      05:25:07.8 +06:20:58  1.6  3.14 125
PPM 149151     05:34:43.3 +05:39:40  6.4  1.66 123
PPM 149085     05:31:27.0 +04:18:56  8.2  0.61 123
PPM 149140     05:34:13.8 +03:42:07  9.9  0.36 123
PPM 149128     05:33:21.4 +04:06:00 11.7  0.10 123
10TH           05:33:36.8 +04:01:44 16.0       123
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:02:53 UT

Marc W. Buie, Southwest Research Institute

RECON