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 11:25:03 UTC

J2000 position of star is 05:33:36.8 +04:01:44
Equinox of date position of star is 05:34:33.6 +04:02:24
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 129 seconds.
The 1-sigma cross-track error in the shadow position is 1183 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 17.7 km RECON observability=1.0 and success probability=29.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:17:02 -21.1 Dark Down 32.6 127.4 Up 11:05:49 - 11:28:15 -48
Tonasket 11:17:02 -21.3 Dark Down 32.7 127.2 Up 11:05:49 - 11:28:15 -71
Okanogan 11:17:02 -21.5 Dark Down 32.9 126.9 Up 11:05:49 - 11:28:15 -108
Brewster 11:17:01 -21.8 Dark Down 32.9 126.6 Up 11:05:48 - 11:28:14 -141
Manson/Chelan 11:17:01 -22.1 Dark Down 32.8 126.1 Up 11:05:48 - 11:28:14 -173
Entiat 11:17:00 -22.3 Dark Down 32.9 125.9 Up 11:05:47 - 11:28:13 -197
Wenatchee 11:17:00 -22.5 Dark Down 33.0 125.7 Up 11:05:47 - 11:28:13 -225
Niwot 11:18:30 -15.8 AT Down 46.2 138.2 Up 11:07:17 - 11:29:43 -267
Ellensburg 11:17:00 -22.9 Dark Down 33.1 125.2 Up 11:05:47 - 11:28:13 -272
Pasco 11:17:06 -22.4 Dark Down 34.4 126.3 Up 11:05:53 - 11:28:19 -294
PNWRO 11:17:08 -22.4 Dark Down 34.7 126.4 Up 11:05:55 - 11:28:21 -309
Yakima 11:17:01 -23.1 Dark Down 33.4 125.0 Up 11:05:48 - 11:28:14 -312
Toppenish/White Swan 11:17:01 -23.1 Dark Down 33.6 125.1 Up 11:05:48 - 11:28:14 -327
George/Umatilla 11:17:07 -22.7 Dark Down 34.5 125.9 Up 11:05:54 - 11:28:20 -334
Goldendale 11:17:01 -23.7 Dark Down 33.7 124.3 Up 11:05:48 - 11:28:14 -396
The Dalles 11:16:58 -24.0 Dark Down 33.6 123.8 Up 11:05:45 - 11:28:11 -430
Maupin 11:16:59 -24.2 Dark Down 33.9 123.7 Up 11:05:46 - 11:28:12 -468
Madras/Culver 11:17:00 -24.5 Dark Down 34.1 123.4 Up 11:05:47 - 11:28:13 -523
Redmond 11:17:00 -24.7 Dark Down 34.3 123.1 Up 11:05:47 - 11:28:13 -559
Sisters 11:16:59 -25.0 Dark Down 34.0 122.7 Up 11:05:46 - 11:28:12 -571
Bend 11:17:00 -24.9 Dark Down 34.3 122.9 Up 11:05:47 - 11:28:13 -585
Oregon Observatory 11:17:00 -25.1 Dark Down 34.4 122.6 Up 11:05:47 - 11:28:13 -607
La Pine/Gilchrist 11:17:00 -25.3 Dark Down 34.4 122.5 Up 11:05:47 - 11:28:13 -629
North Lake 11:17:04 -25.1 Dark Down 35.0 122.8 Up 11:05:51 - 11:28:17 -650
Paisley 11:17:07 -25.2 Dark Down 35.6 122.8 Up 11:05:54 - 11:28:20 -691
Lakeview 11:17:08 -25.4 Dark Down 36.0 122.7 Up 11:05:55 - 11:28:21 -734
Chiloquin 11:17:01 -26.1 Dark Down 34.8 121.5 Up 11:05:48 - 11:28:14 -752
Klamath Falls 11:17:01 -26.3 Dark Down 35.0 121.3 Up 11:05:48 - 11:28:14 -783
Cedarville 11:17:10 -25.6 Dark Down 36.4 122.5 Up 11:05:57 - 11:28:23 -791
Tulelake 11:17:03 -26.2 Dark Down 35.4 121.5 Up 11:05:50 - 11:28:16 -798
Fall River/Burney 11:17:05 -26.6 Dark Down 35.9 121.0 Up 11:05:52 - 11:28:18 -885
Susanville 11:17:10 -26.5 Dark Down 36.7 121.3 Up 11:05:57 - 11:28:23 -919
Gimple 11:17:10 -26.8 Dark Down 36.7 121.0 Up 11:05:57 - 11:28:23 -955
Greenville 11:17:09 -26.8 Dark Down 36.7 120.9 Up 11:05:56 - 11:28:22 -958
Portola 11:17:13 -26.7 Dark Down 37.2 121.1 Up 11:06:00 - 11:28:26 -972
Reno 11:17:16 -26.4 Dark Down 37.7 121.6 Up 11:06:03 - 11:28:29 -972
Quincy 11:17:10 -26.9 Dark Down 36.8 120.7 Up 11:05:57 - 11:28:23 -977
Yerington 11:17:20 -26.2 Dark Down 38.5 121.9 Up 11:06:07 - 11:28:33 -1000
Carson City 11:17:17 -26.6 Dark Down 37.9 121.4 Up 11:06:04 - 11:28:30 -1007
Tonopah 11:17:33 -25.3 Dark Down 40.3 123.1 Up 11:06:20 - 11:28:46 -1010
Hawthorne 11:17:24 -26.1 Dark Down 39.1 122.1 Up 11:06:11 - 11:28:37 -1024
Gardnerville 11:17:18 -26.6 Dark Down 38.1 121.3 Up 11:06:05 - 11:28:31 -1029
Indian Springs 11:17:45 -24.9 Dark Down 42.2 123.6 Up 11:06:32 - 11:28:58 -1087
Lee Vining 11:17:23 -26.7 Dark Down 39.0 121.2 Up 11:06:10 - 11:28:36 -1099
Beatty 11:17:38 -25.5 Dark Down 41.2 122.8 Up 11:06:25 - 11:28:51 -1103
Henderson 11:17:51 -24.6 Dark Down 42.9 123.9 Up 11:06:38 - 11:29:04 -1107
DCO 11:18:03 -23.6 Dark Down 44.7 125.1 Up 11:06:50 - 11:29:16 -1111
Patrick 11:17:58 -24.0 Dark Down 44.1 124.6 Up 11:06:45 - 11:29:11 -1115
Bishop 11:17:30 -26.5 Dark Down 39.9 121.5 Up 11:06:17 - 11:28:43 -1128
Kingman/Dolan Springs 11:17:58 -24.2 Dark Down 44.1 124.2 Up 11:06:45 - 11:29:11 -1145
Searchlight/Boulder City 11:17:52 -24.8 Dark Down 43.3 123.6 Up 11:06:39 - 11:29:05 -1159
Laughlin/Bullhead City 11:17:55 -24.6 Dark Down 43.7 123.7 Up 11:06:42 - 11:29:08 -1172
Lone Pine 11:17:33 -26.6 Dark Down 40.5 121.3 Up 11:06:20 - 11:28:46 -1188
Mohave Valley 11:17:57 -24.7 Dark Down 43.9 123.5 Up 11:06:44 - 11:29:10 -1197
Lake Havasu City 11:17:58 -24.7 Dark Down 44.3 123.4 Up 11:06:45 - 11:29:11 -1224
Parker 11:18:00 -24.8 Dark Down 44.5 123.2 Up 11:06:47 - 11:29:13 -1256
Blythe 11:18:00 -25.3 Dark Down 44.6 122.4 Up 11:06:47 - 11:29:13 -1320
Idyllwild 11:17:49 -26.9 Dark Down 43.0 120.4 Up 11:06:36 - 11:29:02 -1407
Yuma 11:18:03 -25.7 Dark Down 45.0 121.6 Up 11:06:50 - 11:29:16 -1411
Calipatria 11:17:56 -26.2 Dark Down 44.1 121.1 Up 11:06:43 - 11:29:09 -1411
CPSLO 11:17:23 -29.1 Dark Down 39.3 117.9 Up 11:06:10 - 11:28:36 -1424
Wildwood 11:17:37 -28.1 Dark Down 41.4 118.9 Up 11:06:24 - 11:28:50 -1456

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 2017/12/05 18:56:12 UT

Marc W. Buie, Southwest Research Institute

RECON