RECON: TNO occultation with 120216

Event between (120216) 04EW95 and star UC4-306-078196 with event index number of 109262

Geocentric closest approach at 2018/03/09 09:31:49 UTC

J2000 position of star is 14:52:25.3 -28:55:56
Equinox of date position of star is 14:53:27.5 -29:00:09
Stellar brightness R=14.8, use SENSEUP=128
Star is 33 degrees from the moon. Moon is 51% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 27.0 AU from the Sun and 26.5 AU from the Earth.
The TNO is moving 11.9 km/sec on the sky relative to the star, or, 2.2 arcsec/hr.
The 1-sigma error in the time of the event is 178 seconds.
The 1-sigma cross-track error in the shadow position is 2088 km.
The sky-plane scale is 19209.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 25.5 sec chord
Diameter=123.3 km assuming a 30% albedo -- 10.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 120216, (2018/03/09 09:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.5 -26:28:15  0.9 21.58  12
5The Cen       14:07:45.6 -36:27:31  2.1 12.15  44
58 Hya         14:51:21.7 -28:02:06  4.6  1.08  33
PPM 263444     14:51:02.6 -29:06:33  7.3  0.55  33
PPM 263507     14:53:54.5 -28:59:18  9.0  0.09  33
120216         14:53:30.4 -29:00:21 14.8        33
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 5.1 sigma about the mid-time.
The median site spacing is 10.7 km RECON observability=0.2 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Manson/Chelan 09:30:56 -43.3 Dark Up 7.5 150.8 Really Low 09:15:56 - 09:45:56 6115
Entiat 09:30:58 -43.5 Dark Up 7.7 150.8 Really Low 09:15:58 - 09:45:58 6114
Oroville 09:30:48 -42.2 Dark Up 6.8 151.5 Really Low 09:15:48 - 09:45:48 6113
Wenatchee 09:31:01 -43.8 Dark Up 7.9 150.7 Really Low 09:16:01 - 09:46:01 6113
Ellensburg 09:31:03 -44.2 Dark Up 8.2 150.5 Really Low 09:16:03 - 09:46:03 6113
Brewster 09:30:53 -43.0 Dark Up 7.4 151.1 Really Low 09:15:53 - 09:45:53 6112
Tonasket 09:30:48 -42.4 Dark Up 7.0 151.5 Really Low 09:15:48 - 09:45:48 6112
Okanogan 09:30:52 -42.7 Dark Up 7.3 151.3 Really Low 09:15:52 - 09:45:52 6112
Yakima 09:31:03 -44.6 Dark Up 8.5 150.4 Really Low 09:16:03 - 09:46:03 6109
The Dalles 09:31:14 -45.6 Dark Up 9.2 149.9 Really Low 09:16:14 - 09:46:14 6105
Toppenish/White Swan 09:31:05 -44.7 Dark Up 8.8 150.6 Really Low 09:16:05 - 09:46:05 6105
Goldendale 09:31:10 -45.3 Dark Up 9.1 150.2 Really Low 09:16:10 - 09:46:10 6104
Maupin 09:31:14 -46.0 Dark Up 9.6 149.9 Really Low 09:16:14 - 09:46:14 6099
Sisters 09:31:20 -46.9 Dark Up 10.2 149.5 Really Low 09:16:20 - 09:46:20 6094
Madras/Culver 09:31:17 -46.5 Dark Up 10.0 149.9 Really Low 09:16:17 - 09:46:17 6093
Redmond 09:31:19 -46.8 Dark Up 10.3 149.8 Really Low 09:16:19 - 09:46:19 6089
Pasco 09:30:59 -44.4 Dark Up 9.3 151.6 Really Low 09:15:59 - 09:45:59 6088
Bend 09:31:20 -47.0 Dark Up 10.5 149.7 Really Low 09:16:20 - 09:46:20 6088
George/Umatilla 09:31:00 -44.8 Dark Up 9.5 151.4 Really Low 09:16:00 - 09:46:00 6088
Oregon Observatory 09:31:22 -47.2 Dark Up 10.6 149.6 Really Low 09:16:22 - 09:46:22 6087
La Pine/Gilchrist 09:31:24 -47.4 Dark Up 10.7 149.5 Really Low 09:16:24 - 09:46:24 6085
PNWRO 09:31:00 -44.5 Dark Up 9.6 151.8 Really Low 09:16:00 - 09:46:00 6083
North Lake 09:31:22 -47.6 Dark Up 11.3 149.9 Really Low 09:16:22 - 09:46:22 6071
Chiloquin 09:31:30 -48.5 Dark Up 11.6 149.1 Really Low 09:16:30 - 09:46:30 6071
Klamath Falls 09:31:33 -48.8 Dark Up 11.9 149.2 Really Low 09:16:33 - 09:46:33 6064
Paisley 09:31:22 -48.0 Dark Up 11.9 150.2 Really Low 09:16:22 - 09:46:22 6058
Tulelake 09:31:32 -48.9 Dark Up 12.2 149.4 Really Low 09:16:32 - 09:46:32 6056
Lakeview 09:31:23 -48.3 Dark Up 12.4 150.3 Really Low 09:16:23 - 09:46:23 6047
Fall River/Burney 09:31:35 -49.7 Dark Up 13.0 149.3 Really Low 09:16:35 - 09:46:35 6038
Cedarville 09:31:26 -48.8 Dark Up 13.1 150.4 Really Low 09:16:26 - 09:46:26 6033
Susanville 09:31:33 -49.9 Dark Up 13.9 149.9 Really Low 09:16:33 - 09:46:33 6016
Greenville 09:31:38 -50.3 Dark Up 14.0 149.6 Really Low 09:16:38 - 09:46:38 6014
Gimple 09:31:36 -50.3 Dark Up 14.0 149.7 Really Low 09:16:36 - 09:46:36 6012
Quincy 09:31:39 -50.5 Dark Up 14.2 149.6 Really Low 09:16:39 - 09:46:39 6009
Portola 09:31:35 -50.4 Dark Up 14.5 149.9 Really Low 09:16:35 - 09:46:35 6001
Reno 09:31:33 -50.3 Dark Up 14.9 150.4 Really Low 09:16:33 - 09:46:33 5986
Carson City 09:31:33 -50.6 Dark Up 15.3 150.4 Really Low 09:16:33 - 09:46:33 5977
Gardnerville 09:31:36 -50.8 Dark Up 15.5 150.4 Really Low 09:16:36 - 09:46:36 5971
Yerington 09:31:30 -50.5 Dark Up 15.7 150.9 Really Low 09:16:30 - 09:46:30 5964
Hawthorne 09:31:31 -50.7 Dark Up 16.3 151.3 Really Low 09:16:31 - 09:46:31 5945
Lee Vining 09:31:35 -51.3 Dark Up 16.6 150.8 Really Low 09:16:35 - 09:46:35 5938
Tonopah 09:31:24 -50.4 Dark Up 17.2 152.3 Really Low 09:16:24 - 09:46:24 5912
Bishop 09:31:35 -51.5 Dark Up 17.4 151.3 Really Low 09:16:35 - 09:46:35 5911
Lone Pine 09:31:33 -51.9 Dark Up 18.2 151.5 Really Low 09:16:33 - 09:46:33 5884
CPSLO 09:31:57 -54.2 Dark Up 18.3 149.2 Really Low 09:16:57 - 09:46:57 5882
Beatty 09:31:25 -51.1 Dark Up 18.4 152.6 Really Low 09:16:25 - 09:46:25 5872
Indian Springs 09:31:21 -50.8 Dark Up 19.1 153.4 Really Low 09:16:21 - 09:46:21 5844
Henderson 09:31:19 -50.8 Dark Up 19.8 153.9 Really Low 09:16:19 - 09:46:19 5815
Wildwood 09:31:50 -54.1 Dark Up 20.2 150.6 Low 09:16:50 - 09:46:50 5814
Searchlight/Boulder City 09:31:21 -51.2 Dark Up 20.3 153.9 Low 09:16:21 - 09:46:21 5796
Laughlin/Bullhead City 09:31:19 -51.2 Dark Up 20.7 154.1 Low 09:16:19 - 09:46:19 5779
Patrick 09:31:13 -50.7 Dark Up 20.8 154.7 Low 09:16:13 - 09:46:13 5774
Idyllwild 09:31:40 -53.4 Dark Up 21.3 152.1 Low 09:16:40 - 09:46:40 5772
Kingman/Dolan Springs 09:31:15 -50.9 Dark Up 20.9 154.5 Low 09:16:15 - 09:46:15 5771
Mohave Valley 09:31:21 -51.4 Dark Up 21.0 154.1 Low 09:16:21 - 09:46:21 5770
Lake Havasu City 09:31:20 -51.6 Dark Up 21.4 154.2 Low 09:16:20 - 09:46:20 5752
DCO 09:31:10 -50.5 Dark Up 21.3 155.3 Low 09:16:10 - 09:46:10 5750
Parker 09:31:21 -51.8 Dark Up 21.8 154.2 Low 09:16:21 - 09:46:21 5740
Calipatria 09:31:34 -53.2 Dark Up 22.2 153.0 Low 09:16:34 - 09:46:34 5727
Blythe 09:31:26 -52.3 Dark Up 22.1 153.8 Low 09:16:26 - 09:46:26 5727
Niwot 09:30:01 -42.6 Dark Up 18.8 162.7 Really Low 09:15:01 - 09:45:01 5716
Yuma 09:31:30 -53.0 Dark Up 23.0 153.7 Low 09:16:30 - 09:46:30 5695

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 120216, (2018/03/09 09:32UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.58  12
5The Cen       14:06:40.2 -36:22:21  2.1 12.15  44
58 Hya         14:50:17.0 -27:57:38  4.6  1.08  33
PPM 263444     14:49:57.5 -29:02:04  7.3  0.55  33
PPM 263507     14:52:49.4 -28:54:53  9.0  0.09  33
120216         14:52:25.3 -28:55:56 14.8        33
Positions are for J2000

Event circumstances last updated at 2017/05/17 18:03:35 UT

Marc W. Buie, Southwest Research Institute

RECON