RECON: TNO occultation with 10TH

Event between 10TH and star UC4-472-011721 with event index number of 147557

Geocentric closest approach at 2018/08/22 11:58:15 UTC

J2000 position of star is 05:31:35.8 +04:16:34
Equinox of date position of star is 05:32:32.7 +04:17:18
Stellar brightness R=14.5, use SENSEUP=128
Star is 152 degrees from the moon. Moon is 86% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 17.8 AU from the Sun and 18.2 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 84 seconds.
The 1-sigma cross-track error in the shadow position is 939 km.
The sky-plane scale is 13187.4 km/arcsec.

The TNO has an absolute magnitude Hv=9.2
Diameter=88.3 km assuming a 5% albedo -- 4.7 sec chord
Diameter=36.1 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10TH, (2018/08/22 11:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:10.9 +07:24:33  0.4  6.65 158
Bellatrix      05:26:07.9 +06:21:54  1.6  2.62 151
PPM 149151     05:35:43.1 +05:40:20  6.4  1.59 153
PPM 149085     05:32:26.2 +04:19:41  8.2  0.05 151
10TH           05:32:35.0 +04:17:19 14.5       152
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 33.2 km RECON observability=0.4 and success probability=12.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:54:12 -10.6 CT Down 26.7 116.8 Low 11:46:41 - 12:01:43 -573
Tonasket 11:54:11 -10.7 CT Down 26.9 116.7 Low 11:46:40 - 12:01:42 -594
Okanogan 11:54:10 -11.0 CT Down 26.9 116.4 Low 11:46:39 - 12:01:41 -627
Brewster 11:54:09 -11.3 CT Down 26.9 116.1 Low 11:46:38 - 12:01:40 -655
Manson/Chelan 11:54:08 -11.6 CT Down 26.8 115.7 Low 11:46:37 - 12:01:39 -678
Entiat 11:54:07 -11.8 CT Down 26.8 115.5 Low 11:46:36 - 12:01:38 -699
Wenatchee 11:54:06 -11.9 CT Down 26.9 115.3 Low 11:46:35 - 12:01:37 -724
Ellensburg 11:54:05 -12.3 AT Down 26.9 114.9 Low 11:46:34 - 12:01:36 -766
Yakima 11:54:04 -12.5 AT Down 27.1 114.7 Low 11:46:33 - 12:01:35 -805
Pasco 11:54:07 -11.9 CT Down 28.1 115.8 Low 11:46:36 - 12:01:38 -824
Toppenish/White Swan 11:54:04 -12.5 AT Down 27.3 114.8 Low 11:46:33 - 12:01:35 -824
PNWRO 11:54:07 -11.8 CT Down 28.4 115.9 Low 11:46:36 - 12:01:38 -845
George/Umatilla 11:54:05 -12.2 AT Down 28.1 115.5 Low 11:46:34 - 12:01:36 -858
Goldendale 11:54:02 -13.1 AT Down 27.2 114.1 Low 11:46:31 - 12:01:33 -881
The Dalles 11:54:01 -13.4 AT Down 27.1 113.7 Low 11:46:30 - 12:01:32 -906
Maupin 11:54:00 -13.6 AT Down 27.3 113.6 Low 11:46:29 - 12:01:31 -946
Madras/Culver 11:53:58 -13.9 AT Down 27.5 113.3 Low 11:46:27 - 12:01:29 -999
Redmond 11:53:58 -14.1 AT Down 27.6 113.1 Low 11:46:27 - 12:01:29 -1035
Sisters 11:53:57 -14.4 AT Down 27.3 112.8 Low 11:46:26 - 12:01:28 -1036
Bend 11:53:57 -14.4 AT Down 27.6 112.9 Low 11:46:26 - 12:01:28 -1057
Oregon Observatory 11:53:57 -14.5 AT Down 27.6 112.7 Low 11:46:26 - 12:01:28 -1075
La Pine/Gilchrist 11:53:56 -14.7 AT Down 27.6 112.5 Low 11:46:25 - 12:01:27 -1096
North Lake 11:53:57 -14.5 AT Down 28.2 112.8 Low 11:46:26 - 12:01:28 -1134
Paisley 11:53:57 -14.6 AT Down 28.6 112.8 Low 11:46:26 - 12:01:28 -1185
Chiloquin 11:53:53 -15.5 AT Down 27.8 111.7 Low 11:46:22 - 12:01:24 -1210
Lakeview 11:53:56 -14.8 AT Down 29.0 112.7 Low 11:46:25 - 12:01:27 -1233
Niwot 11:54:40 -5.2 CT Down 40.1 125.5 Up 11:47:09 - 12:02:11 -1240
Klamath Falls 11:53:53 -15.6 AT Down 28.0 111.6 Low 11:46:22 - 12:01:24 -1243
Tulelake 11:53:53 -15.6 AT Down 28.3 111.7 Low 11:46:22 - 12:01:24 -1267
Cedarville 11:53:56 -15.0 AT Down 29.3 112.5 Low 11:46:25 - 12:01:27 -1297
Fall River/Burney 11:53:52 -16.0 AT Down 28.6 111.3 Low 11:46:21 - 12:01:23 -1358
Susanville 11:53:53 -15.9 AT Down 29.4 111.6 Low 11:46:22 - 12:01:24 -1414
Gimple 11:53:51 -16.2 AT Down 29.4 111.2 Low 11:46:20 - 12:01:22 -1444
Greenville 11:53:51 -16.2 AT Down 29.3 111.2 Low 11:46:20 - 12:01:22 -1445
Quincy 11:53:51 -16.3 AT Down 29.4 111.1 Low 11:46:20 - 12:01:22 -1466
Portola 11:53:52 -16.1 AT Down 29.8 111.4 Low 11:46:21 - 12:01:23 -1473
Reno 11:53:54 -15.8 AT Down 30.3 111.8 Up 11:46:23 - 12:01:25 -1494
Carson City 11:53:53 -15.9 AT Down 30.5 111.6 Up 11:46:22 - 12:01:24 -1530
Yerington 11:53:54 -15.6 AT Down 31.0 112.0 Up 11:46:23 - 12:01:25 -1543
Gardnerville 11:53:53 -16.0 AT Down 30.6 111.5 Up 11:46:22 - 12:01:24 -1555
Hawthorne 11:53:55 -15.5 AT Down 31.6 112.2 Up 11:46:24 - 12:01:26 -1585
Tonopah 11:53:58 -14.7 AT Down 32.8 113.1 Up 11:46:27 - 12:01:29 -1616
Lee Vining 11:53:53 -16.1 AT Down 31.4 111.4 Up 11:46:22 - 12:01:24 -1648
Bishop 11:53:54 -15.9 AT Down 32.2 111.7 Up 11:46:23 - 12:01:25 -1701
Beatty 11:53:58 -14.9 AT Down 33.6 112.7 Up 11:46:27 - 12:01:29 -1730
Indian Springs 11:54:01 -14.3 AT Down 34.5 113.4 Up 11:46:30 - 12:01:32 -1750
Lone Pine 11:53:54 -16.0 AT Down 32.7 111.5 Up 11:46:23 - 12:01:25 -1776
Henderson 11:54:03 -14.0 AT Down 35.2 113.6 Up 11:46:32 - 12:01:34 -1796
Patrick 11:54:06 -13.5 AT Down 36.3 114.2 Up 11:46:35 - 12:01:37 -1846
Searchlight/Boulder City 11:54:03 -14.2 AT Down 35.5 113.3 Up 11:46:32 - 12:01:34 -1854
DCO 11:54:08 -13.1 AT Down 37.0 114.5 Up 11:46:37 - 12:01:39 -1868
Kingman/Dolan Springs 11:54:05 -13.7 AT Down 36.3 113.8 Up 11:46:34 - 12:01:36 -1871
Laughlin/Bullhead City 11:54:04 -14.1 AT Down 35.9 113.4 Up 11:46:33 - 12:01:35 -1881
Mohave Valley 11:54:03 -14.2 AT Down 36.0 113.2 Up 11:46:32 - 12:01:34 -1909
CPSLO 11:53:45 -18.5 Dark Down 31.1 108.7 Up 11:46:14 - 12:01:16 -1940
Lake Havasu City 11:54:04 -14.2 AT Down 36.3 113.2 Up 11:46:33 - 12:01:35 -1947
Parker 11:54:04 -14.3 AT Down 36.5 112.9 Up 11:46:33 - 12:01:35 -1983
Blythe 11:54:02 -14.8 AT Down 36.5 112.3 Up 11:46:31 - 12:01:33 -2042
Wildwood 11:53:50 -17.6 AT Down 33.1 109.5 Up 11:46:19 - 12:01:21 -2044
Idyllwild 11:53:56 -16.4 AT Down 34.8 110.8 Up 11:46:25 - 12:01:27 -2058
Calipatria 11:53:59 -15.7 AT Down 35.9 111.3 Up 11:46:28 - 12:01:30 -2107
Yuma 11:54:02 -15.2 AT Down 36.8 111.7 Up 11:46:31 - 12:01:33 -2140

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, (2018/08/22 11:58UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.65 158
Bellatrix      05:25:07.8 +06:20:58  1.6  2.62 151
PPM 149151     05:34:43.3 +05:39:40  6.4  1.59 153
PPM 149085     05:31:27.0 +04:18:56  8.2  0.05 151
10TH           05:31:35.8 +04:16:34 14.5       151
Positions are for J2000

Event circumstances last updated at 2017/12/05 18:53:32 UT

Marc W. Buie, Southwest Research Institute

RECON