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 11:58:16 UTC

J2000 position of star is 05:31:35.8 +04:16:34
Equinox of date position of star is 05:32:31.0 +04:17:16
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 65 seconds.
The 1-sigma cross-track error in the shadow position is 816 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 33.1 km RECON observability=0.4 and success probability=11.6%
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 11:48:16 - 12:00:09 -570
Tonasket 11:54:12 -10.7 CT Down 26.9 116.7 Low 11:48:15 - 12:00:08 -592
Okanogan 11:54:11 -11.0 CT Down 26.9 116.4 Low 11:48:14 - 12:00:07 -624
Brewster 11:54:10 -11.3 CT Down 26.9 116.1 Low 11:48:13 - 12:00:06 -652
Manson/Chelan 11:54:09 -11.6 CT Down 26.8 115.7 Low 11:48:12 - 12:00:05 -675
Entiat 11:54:08 -11.7 CT Down 26.8 115.5 Low 11:48:12 - 12:00:05 -696
Wenatchee 11:54:08 -11.9 CT Down 26.9 115.3 Low 11:48:11 - 12:00:04 -721
Ellensburg 11:54:06 -12.3 AT Down 26.9 114.9 Low 11:48:09 - 12:00:02 -763
Yakima 11:54:05 -12.5 AT Down 27.1 114.7 Low 11:48:09 - 12:00:02 -802
Pasco 11:54:08 -11.9 CT Down 28.1 115.8 Low 11:48:12 - 12:00:05 -821
Toppenish/White Swan 11:54:05 -12.5 AT Down 27.3 114.8 Low 11:48:09 - 12:00:02 -821
PNWRO 11:54:08 -11.8 CT Down 28.4 115.9 Low 11:48:12 - 12:00:05 -842
George/Umatilla 11:54:07 -12.2 AT Down 28.1 115.5 Low 11:48:10 - 12:00:03 -855
Goldendale 11:54:03 -13.1 AT Down 27.2 114.1 Low 11:48:06 - 11:59:59 -878
The Dalles 11:54:02 -13.4 AT Down 27.1 113.7 Low 11:48:05 - 11:59:58 -903
Maupin 11:54:01 -13.6 AT Down 27.3 113.6 Low 11:48:05 - 11:59:58 -943
Madras/Culver 11:54:00 -13.9 AT Down 27.5 113.3 Low 11:48:03 - 11:59:56 -996
Redmond 11:53:59 -14.1 AT Down 27.6 113.1 Low 11:48:02 - 11:59:55 -1032
Sisters 11:53:58 -14.4 AT Down 27.3 112.8 Low 11:48:01 - 11:59:54 -1033
Bend 11:53:58 -14.4 AT Down 27.6 112.9 Low 11:48:01 - 11:59:54 -1054
Oregon Observatory 11:53:58 -14.5 AT Down 27.6 112.7 Low 11:48:01 - 11:59:54 -1072
La Pine/Gilchrist 11:53:57 -14.7 AT Down 27.6 112.5 Low 11:48:01 - 11:59:54 -1093
North Lake 11:53:58 -14.5 AT Down 28.2 112.8 Low 11:48:01 - 11:59:54 -1130
Paisley 11:53:58 -14.6 AT Down 28.6 112.8 Low 11:48:01 - 11:59:54 -1181
Chiloquin 11:53:54 -15.5 AT Down 27.8 111.7 Low 11:47:58 - 11:59:51 -1206
Lakeview 11:53:57 -14.7 AT Down 29.0 112.7 Low 11:48:01 - 11:59:54 -1230
Niwot 11:54:41 -5.2 CT Down 40.1 125.5 Up 11:48:44 - 12:00:37 -1234
Klamath Falls 11:53:54 -15.6 AT Down 28.0 111.6 Low 11:47:57 - 11:59:50 -1240
Tulelake 11:53:54 -15.6 AT Down 28.3 111.7 Low 11:47:58 - 11:59:51 -1264
Cedarville 11:53:57 -15.0 AT Down 29.3 112.5 Low 11:48:00 - 11:59:53 -1294
Fall River/Burney 11:53:52 -16.0 AT Down 28.6 111.3 Low 11:47:56 - 11:59:49 -1354
Susanville 11:53:54 -15.9 AT Down 29.4 111.6 Low 11:47:57 - 11:59:50 -1411
Gimple 11:53:53 -16.2 AT Down 29.4 111.2 Low 11:47:56 - 11:59:49 -1441
Greenville 11:53:52 -16.2 AT Down 29.3 111.2 Low 11:47:56 - 11:59:49 -1441
Quincy 11:53:52 -16.3 AT Down 29.4 111.1 Low 11:47:55 - 11:59:48 -1462
Portola 11:53:53 -16.1 AT Down 29.8 111.4 Low 11:47:56 - 11:59:49 -1470
Reno 11:53:54 -15.8 AT Down 30.3 111.8 Up 11:47:58 - 11:59:51 -1490
Carson City 11:53:54 -15.9 AT Down 30.5 111.6 Up 11:47:58 - 11:59:51 -1526
Yerington 11:53:55 -15.6 AT Down 31.0 112.0 Up 11:47:59 - 11:59:52 -1539
Gardnerville 11:53:54 -16.0 AT Down 30.6 111.5 Up 11:47:57 - 11:59:50 -1551
Hawthorne 11:53:56 -15.5 AT Down 31.6 112.2 Up 11:48:00 - 11:59:53 -1581
Tonopah 11:53:59 -14.7 AT Down 32.8 113.1 Up 11:48:03 - 11:59:56 -1612
Lee Vining 11:53:54 -16.1 AT Down 31.4 111.4 Up 11:47:58 - 11:59:51 -1644
Bishop 11:53:55 -15.9 AT Down 32.2 111.7 Up 11:47:59 - 11:59:52 -1697
Beatty 11:54:00 -14.9 AT Down 33.6 112.7 Up 11:48:03 - 11:59:56 -1726
Indian Springs 11:54:03 -14.3 AT Down 34.5 113.4 Up 11:48:06 - 11:59:59 -1746
Lone Pine 11:53:55 -16.0 AT Down 32.7 111.5 Up 11:47:59 - 11:59:52 -1772
Henderson 11:54:05 -14.0 AT Down 35.2 113.6 Up 11:48:08 - 12:00:01 -1792
Patrick 11:54:08 -13.5 AT Down 36.3 114.2 Up 11:48:11 - 12:00:04 -1841
Searchlight/Boulder City 11:54:04 -14.2 AT Down 35.5 113.3 Up 11:48:07 - 12:00:00 -1850
DCO 11:54:09 -13.1 AT Down 37.0 114.5 Up 11:48:13 - 12:00:06 -1863
Kingman/Dolan Springs 11:54:06 -13.7 AT Down 36.3 113.8 Up 11:48:10 - 12:00:03 -1867
Laughlin/Bullhead City 11:54:05 -14.1 AT Down 35.9 113.4 Up 11:48:09 - 12:00:02 -1877
Mohave Valley 11:54:05 -14.2 AT Down 36.0 113.2 Up 11:48:09 - 12:00:02 -1905
CPSLO 11:53:46 -18.5 Dark Down 31.1 108.7 Up 11:47:50 - 11:59:43 -1937
Lake Havasu City 11:54:05 -14.2 AT Down 36.3 113.2 Up 11:48:09 - 12:00:02 -1943
Parker 11:54:05 -14.3 AT Down 36.5 112.9 Up 11:48:09 - 12:00:02 -1979
Blythe 11:54:03 -14.8 AT Down 36.5 112.3 Up 11:48:07 - 12:00:00 -2038
Wildwood 11:53:51 -17.6 AT Down 33.2 109.5 Up 11:47:54 - 11:59:47 -2040
Idyllwild 11:53:57 -16.4 AT Down 34.8 110.8 Up 11:48:00 - 11:59:53 -2054
Calipatria 11:54:00 -15.7 AT Down 35.9 111.3 Up 11:48:03 - 11:59:56 -2103
Yuma 11:54:03 -15.2 AT Down 36.8 111.7 Up 11:48:06 - 11:59:59 -2136

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 2017/05/19 18:02:08 UT

Marc W. Buie, Southwest Research Institute

RECON