RECON: TNO occultation with 472271

Event between (472271) 14UM33 and star UC4-551-004726 with event index number of 150771

Geocentric closest approach at 2018/07/11 09:37:04 UTC

J2000 position of star is 02:30:37.2 +20:01:30
Equinox of date position of star is 02:31:37.6 +20:06:14
Stellar brightness R=16.2, use SENSEUP=128
Star is 44 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=21.3

[RECON map]
TNO is 43.7 AU from the Sun and 44.1 AU from the Earth.
The TNO is moving 15.6 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 274 seconds.
The 1-sigma cross-track error in the shadow position is 1662 km.
The sky-plane scale is 32004.2 km/arcsec.

The TNO has an absolute magnitude Hv=4.7
Diameter=691.9 km assuming a 5% albedo -- 44.3 sec chord
Diameter=282.4 km assuming a 30% albedo -- 18.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 472271, (2018/07/11 09:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:59.1 +16:32:42  0.8 29.91  15
Hamal          02:08:13.3 +23:32:57  2.0  6.44  49
26 Ari         02:31:41.0 +19:56:12  6.1  0.17  44
472271         02:31:39.7 +20:06:24 16.2        44
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 3.3 sigma about the mid-time.
The median site spacing is 6.3 km RECON observability=0.1 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:34:48 -16.1 AT Down 18.7 80.7 Really Low 09:19:48 - 09:49:48 13715
Tonasket 09:34:46 -16.3 AT Down 18.7 80.6 Really Low 09:19:46 - 09:49:46 13707
Okanogan 09:34:44 -16.7 AT Down 18.5 80.4 Really Low 09:19:44 - 09:49:44 13700
Manson/Chelan 09:34:41 -17.3 AT Down 18.1 79.8 Really Low 09:19:41 - 09:49:41 13698
Brewster 09:34:44 -17.0 AT Down 18.4 80.2 Really Low 09:19:44 - 09:49:44 13696
Entiat 09:34:40 -17.5 AT Down 18.0 79.7 Really Low 09:19:40 - 09:49:40 13692
Wenatchee 09:34:39 -17.7 AT Down 17.9 79.6 Really Low 09:19:39 - 09:49:39 13685
Ellensburg 09:34:35 -18.2 Dark Down 17.6 79.3 Really Low 09:19:35 - 09:49:35 13676
Yakima 09:34:33 -18.6 Dark Down 17.5 79.1 Really Low 09:19:33 - 09:49:33 13662
Toppenish/White Swan 09:34:33 -18.7 Dark Down 17.6 79.2 Really Low 09:19:33 - 09:49:33 13649
The Dalles 09:34:28 -19.7 Dark Down 16.9 78.4 Really Low 09:19:28 - 09:49:28 13640
Goldendale 09:34:28 -19.4 Dark Down 17.2 78.7 Really Low 09:19:28 - 09:49:28 13639
Maupin 09:34:24 -20.0 Dark Down 16.9 78.3 Really Low 09:19:24 - 09:49:24 13621
Pasco 09:34:30 -18.5 Dark Down 18.4 80.0 Really Low 09:19:30 - 09:49:30 13610
George/Umatilla 09:34:29 -18.9 Dark Down 18.2 79.7 Really Low 09:19:29 - 09:49:29 13603
Madras/Culver 09:34:20 -20.6 Dark Down 16.7 78.1 Really Low 09:19:20 - 09:49:20 13601
Sisters 09:34:19 -21.0 Dark Down 16.3 77.7 Really Low 09:19:19 - 09:49:19 13599
PNWRO 09:34:30 -18.7 Dark Down 18.6 80.1 Really Low 09:19:30 - 09:49:30 13594
Redmond 09:34:19 -20.9 Dark Down 16.6 78.0 Really Low 09:19:19 - 09:49:19 13588
Bend 09:34:16 -21.1 Dark Down 16.5 77.8 Really Low 09:19:16 - 09:49:16 13583
Oregon Observatory 09:34:16 -21.3 Dark Down 16.3 77.7 Really Low 09:19:16 - 09:49:16 13579
La Pine/Gilchrist 09:34:16 -21.6 Dark Down 16.2 77.6 Really Low 09:19:16 - 09:49:16 13572
North Lake 09:34:12 -21.8 Dark Down 16.6 77.8 Really Low 09:19:12 - 09:49:12 13537
Chiloquin 09:34:08 -22.7 Dark Down 15.7 77.0 Really Low 09:19:08 - 09:49:08 13535
Klamath Falls 09:34:05 -23.0 Dark Down 15.7 77.0 Really Low 09:19:05 - 09:49:05 13518
Paisley 09:34:09 -22.2 Dark Down 16.7 77.9 Really Low 09:19:09 - 09:49:09 13503
Tulelake 09:34:04 -23.2 Dark Down 15.9 77.1 Really Low 09:19:04 - 09:49:04 13497
Lakeview 09:34:04 -22.6 Dark Down 16.7 77.9 Really Low 09:19:04 - 09:49:04 13475
Fall River/Burney 09:33:59 -24.0 Dark Down 15.7 76.9 Really Low 09:18:59 - 09:48:59 13454
Cedarville 09:34:01 -23.2 Dark Down 16.7 77.8 Really Low 09:19:01 - 09:49:01 13441
Susanville 09:33:54 -24.4 Dark Down 16.1 77.1 Really Low 09:18:54 - 09:48:54 13403
Greenville 09:33:53 -24.7 Dark Down 15.8 76.9 Really Low 09:18:53 - 09:48:53 13398
Gimple 09:33:53 -24.7 Dark Down 15.9 76.9 Really Low 09:18:53 - 09:48:53 13396
Quincy 09:33:51 -24.9 Dark Down 15.8 76.8 Really Low 09:18:51 - 09:48:51 13389
Portola 09:33:50 -24.9 Dark Down 16.1 77.1 Really Low 09:18:50 - 09:48:50 13369
Reno 09:33:49 -25.0 Dark Down 16.5 77.4 Really Low 09:18:49 - 09:48:49 13336
Carson City 09:33:47 -25.3 Dark Down 16.4 77.3 Really Low 09:18:47 - 09:48:47 13318
Gardnerville 09:33:45 -25.5 Dark Down 16.4 77.2 Really Low 09:18:45 - 09:48:45 13304
Yerington 09:33:46 -25.3 Dark Down 16.9 77.6 Really Low 09:18:46 - 09:48:46 13289
Hawthorne 09:33:43 -25.5 Dark Down 17.2 77.7 Really Low 09:18:43 - 09:48:43 13249
Lee Vining 09:33:39 -26.2 Dark Down 16.7 77.3 Really Low 09:18:39 - 09:48:39 13235
Bishop 09:33:36 -26.5 Dark Down 17.1 77.5 Really Low 09:18:36 - 09:48:36 13181
Tonopah 09:33:40 -25.5 Dark Down 18.1 78.4 Really Low 09:18:40 - 09:48:40 13180
CPSLO 09:33:23 -29.2 Dark Down 14.8 75.7 Really Low 09:18:23 - 09:48:23 13141
Lone Pine 09:33:30 -27.1 Dark Down 17.2 77.5 Really Low 09:18:30 - 09:48:30 13129
Beatty 09:33:33 -26.4 Dark Down 18.2 78.3 Really Low 09:18:33 - 09:48:33 13103
Indian Springs 09:33:32 -26.3 Dark Down 19.0 78.7 Really Low 09:18:32 - 09:48:32 13050
Wildwood 09:33:15 -29.6 Dark Down 16.1 76.4 Really Low 09:18:15 - 09:48:15 13006
Henderson 09:33:28 -26.5 Dark Down 19.5 78.9 Really Low 09:18:28 - 09:48:28 12996
Searchlight/Boulder City 09:33:24 -27.0 Dark Down 19.4 78.8 Really Low 09:18:24 - 09:48:24 12962
Laughlin/Bullhead City 09:33:22 -27.1 Dark Down 19.6 78.8 Really Low 09:18:22 - 09:48:22 12933
Idyllwild 09:33:15 -29.2 Dark Down 17.6 77.3 Really Low 09:18:15 - 09:48:15 12922
Patrick 09:33:25 -26.6 Dark Down 20.2 79.3 Low 09:18:25 - 09:48:25 12922
Mohave Valley 09:33:21 -27.4 Dark Down 19.5 78.7 Really Low 09:18:21 - 09:48:21 12917
Kingman/Dolan Springs 09:33:23 -26.9 Dark Down 20.0 79.1 Low 09:18:23 - 09:48:23 12916
Lake Havasu City 09:33:19 -27.6 Dark Down 19.7 78.7 Really Low 09:18:19 - 09:48:19 12884
DCO 09:33:24 -26.6 Dark Down 20.7 79.5 Low 09:18:24 - 09:48:24 12879
Niwot 09:33:58 -18.9 Dark Down 27.7 86.4 Low 09:18:58 - 09:48:58 12875
Parker 09:33:17 -27.9 Dark Down 19.6 78.6 Really Low 09:18:17 - 09:48:17 12863
Calipatria 09:33:12 -29.3 Dark Down 18.4 77.6 Really Low 09:18:12 - 09:48:12 12845
Blythe 09:33:14 -28.5 Dark Down 19.2 78.3 Really Low 09:18:14 - 09:48:14 12842
Yuma 09:33:10 -29.3 Dark Down 19.0 77.9 Really Low 09:18:10 - 09:48:10 12787

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 472271, (2018/07/11 09:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 29.91  15
Hamal          02:07:10.7 +23:27:42  2.0  6.44  49
26 Ari         02:30:38.5 +19:51:19  6.1  0.17  44
472271         02:30:37.2 +20:01:30 16.2        44
Positions are for J2000

Event circumstances last updated at 2017/12/04 18:50:14 UT

Marc W. Buie, Southwest Research Institute

RECON