RECON: TNO occultation with 472235

Event between (472235) 14GE45 and star GA0780:04435300 with event index number of 193671

Geocentric closest approach at 2019/05/10 08:36:35 UTC

J2000 position of star is 13:47:16.3 -11:54:20
Equinox of date position of star is 13:48:17.5 -12:00:02
Stellar brightness G=16.4, use SENSEUP=128
Star is 92 degrees from the moon. Moon is 31% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 33.5 AU from the Sun and 32.6 AU from the Earth.
The TNO is moving 21.8 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 176 seconds.
The 1-sigma cross-track error in the shadow position is 2288 km.
The sky-plane scale is 23632.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 14.5 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 472235, (2019/05/10 08:37UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:12.9 -11:15:42  1.0  5.46  87
86 Vir         13:46:58.4 -12:31:22  5.1  0.61  92
PPM 227806     13:46:54.1 -11:19:01  8.1  0.77  91
PPM 227847     13:48:24.1 -12:13:07  9.4  0.22  92
472235         13:48:18.3 -12:00:06 16.4        92
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 9.7 km RECON observability=1.0 and success probability=1.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:36:35 -21.9 Dark Down 22.6 212.9 Low 08:21:35 - 08:51:35 6302
Summerland 08:36:36 -22.0 Dark Down 22.7 212.5 Low 08:21:36 - 08:51:36 6295
Penticton 08:36:34 -22.2 Dark Down 22.9 212.8 Low 08:21:34 - 08:51:34 6286
Okanagan Falls 08:36:34 -22.4 Dark Down 23.1 212.8 Low 08:21:34 - 08:51:34 6279
Oliver 08:36:33 -22.6 Dark Down 23.2 212.8 Low 08:21:33 - 08:51:33 6273
Anarchist Mountain Observatory 08:36:32 -22.7 Dark Down 23.3 213.1 Low 08:21:32 - 08:51:32 6269
Oroville 08:36:32 -22.8 Dark Down 23.4 213.0 Low 08:21:32 - 08:51:32 6265
Tonasket 08:36:32 -23.0 Dark Down 23.6 213.1 Low 08:21:32 - 08:51:32 6257
Okanogan 08:36:32 -23.4 Dark Down 23.9 213.0 Low 08:21:32 - 08:51:32 6242
Brewster 08:36:31 -23.7 Dark Down 24.2 212.9 Low 08:21:31 - 08:51:31 6228
Manson/Chelan 08:36:32 -23.9 Dark Down 24.5 212.6 Low 08:21:32 - 08:51:32 6214
Entiat 08:36:31 -24.2 Dark Down 24.7 212.5 Low 08:21:31 - 08:51:31 6204
Wenatchee 08:36:31 -24.4 Dark Down 25.0 212.5 Low 08:21:31 - 08:51:31 6192
Ellensburg 08:36:31 -24.9 Dark Down 25.4 212.4 Low 08:21:31 - 08:51:31 6171
Pasco 08:36:24 -25.4 Dark Down 25.5 214.0 Low 08:21:24 - 08:51:24 6163
PNWRO 08:36:23 -25.6 Dark Down 25.6 214.3 Low 08:21:23 - 08:51:23 6156
Yakima 08:36:29 -25.3 Dark Down 25.8 212.5 Low 08:21:29 - 08:51:29 6154
Toppenish/White Swan 08:36:28 -25.5 Dark Down 25.9 212.7 Low 08:21:28 - 08:51:28 6148
George/Umatilla 08:36:24 -25.8 Dark Down 25.9 213.8 Low 08:21:24 - 08:51:24 6145
Goldendale 08:36:28 -26.1 Dark Down 26.5 212.4 Low 08:21:28 - 08:51:28 6117
The Dalles 08:36:28 -26.3 Dark Down 26.8 212.1 Low 08:21:28 - 08:51:28 6101
Maupin 08:36:27 -26.7 Dark Down 27.2 212.3 Low 08:21:27 - 08:51:27 6084
Niwot 08:35:26 -27.9 Dark Down 23.5 228.7 Low 08:20:26 - 08:50:26 6066
SwRI 08:35:26 -28.1 Dark Down 23.6 228.6 Low 08:20:26 - 08:50:26 6059
Madras/Culver 08:36:26 -27.3 Dark Down 27.6 212.4 Low 08:21:26 - 08:51:26 6059
Redmond 08:36:25 -27.6 Dark Down 28.0 212.5 Low 08:21:25 - 08:51:25 6041
Sisters 08:36:26 -27.6 Dark Down 28.1 212.0 Low 08:21:26 - 08:51:26 6035
Bend 08:36:25 -27.9 Dark Down 28.2 212.4 Low 08:21:25 - 08:51:25 6029
Oregon Observatory 08:36:25 -28.0 Dark Down 28.4 212.3 Low 08:21:25 - 08:51:25 6019
La Pine/Gilchrist 08:36:25 -28.2 Dark Down 28.6 212.3 Low 08:21:25 - 08:51:25 6008
North Lake 08:36:22 -28.6 Dark Down 28.7 213.0 Low 08:21:22 - 08:51:22 5998
Paisley 08:36:19 -29.1 Dark Down 29.0 213.5 Low 08:21:19 - 08:51:19 5977
Lakeview 08:36:17 -29.6 Dark Down 29.4 213.9 Low 08:21:17 - 08:51:17 5956
Chiloquin 08:36:23 -29.4 Dark Down 29.7 212.2 Low 08:21:23 - 08:51:23 5948
Klamath Falls 08:36:21 -29.7 Dark Down 29.9 212.4 Low 08:21:21 - 08:51:21 5932
Cedarville 08:36:15 -30.2 Dark Down 29.9 214.3 Low 08:21:15 - 08:51:15 5926
Tulelake 08:36:20 -29.9 Dark Down 30.0 212.8 Up 08:21:20 - 08:51:20 5924
Fall River/Burney 08:36:17 -30.8 Dark Down 30.8 213.2 Up 08:21:17 - 08:51:17 5879
Susanville 08:36:13 -31.4 Dark Down 31.0 214.1 Up 08:21:13 - 08:51:13 5860
Gimple 08:36:14 -31.7 Dark Down 31.3 214.0 Up 08:21:14 - 08:51:14 5841
Greenville 08:36:14 -31.7 Dark Down 31.4 213.9 Up 08:21:14 - 08:51:14 5840
Portola 08:36:11 -31.9 Dark Down 31.4 214.5 Up 08:21:11 - 08:51:11 5831
Quincy 08:36:12 -31.9 Dark Down 31.5 214.0 Up 08:21:12 - 08:51:12 5829
Reno 08:36:09 -32.1 Dark Down 31.4 215.3 Up 08:21:09 - 08:51:09 5829
Yerington 08:36:05 -32.5 Dark Down 31.5 216.1 Up 08:21:05 - 08:51:05 5811
Carson City 08:36:07 -32.4 Dark Down 31.6 215.4 Up 08:21:07 - 08:51:07 5810
Gardnerville 08:36:07 -32.7 Dark Down 31.8 215.5 Up 08:21:07 - 08:51:07 5797
Hawthorne 08:36:02 -32.9 Dark Down 31.7 216.8 Up 08:21:02 - 08:51:02 5795
Tonopah 08:35:56 -33.1 Dark Down 31.4 218.4 Up 08:20:56 - 08:50:56 5793
Lee Vining 08:36:02 -33.5 Dark Down 32.3 216.5 Up 08:21:02 - 08:51:02 5754
Beatty 08:35:51 -34.1 Dark Down 32.0 219.3 Up 08:20:51 - 08:50:51 5736
Indian Springs 08:35:47 -34.2 Dark Down 31.7 220.4 Up 08:20:47 - 08:50:47 5735
Bishop 08:35:59 -34.0 Dark Down 32.5 217.5 Up 08:20:59 - 08:50:59 5734
Henderson 08:35:42 -34.6 Dark Down 31.8 221.3 Up 08:20:42 - 08:50:42 5716
Patrick 08:35:38 -34.9 Dark Down 31.7 222.6 Up 08:20:38 - 08:50:38 5697
Lone Pine 08:35:54 -34.7 Dark Down 32.9 218.1 Up 08:20:54 - 08:50:54 5696
DCO 08:35:35 -35.0 Dark Down 31.5 223.4 Up 08:20:35 - 08:50:35 5690
Searchlight/Boulder City 08:35:41 -35.1 Dark Down 32.2 221.6 Up 08:20:41 - 08:50:41 5683
Kingman/Dolan Springs 08:35:37 -35.2 Dark Down 31.9 222.5 Up 08:20:37 - 08:50:37 5681
Laughlin/Bullhead City 08:35:39 -35.3 Dark Down 32.2 222.1 Up 08:20:39 - 08:50:39 5671
Mohave Valley 08:35:39 -35.6 Dark Down 32.4 222.2 Up 08:20:39 - 08:50:39 5655
Lake Havasu City 08:35:36 -35.9 Dark Down 32.6 222.6 Up 08:20:36 - 08:50:36 5635
Parker 08:35:35 -36.2 Dark Down 32.8 222.7 Up 08:20:35 - 08:50:35 5614
Blythe 08:35:35 -36.8 Dark Down 33.4 222.7 Up 08:20:35 - 08:50:35 5576
CPSLO 08:36:00 -36.4 Dark Down 35.2 216.0 Up 08:21:00 - 08:51:00 5570
Idyllwild 08:35:42 -37.2 Dark Down 34.5 220.6 Up 08:20:42 - 08:50:42 5547
Wildwood 08:35:48 -37.2 Dark Down 35.2 218.6 Up 08:20:48 - 08:50:48 5535
Calipatria 08:35:37 -37.5 Dark Down 34.3 222.0 Up 08:20:37 - 08:50:37 5530
Yuma 08:35:32 -37.7 Dark Down 34.1 223.1 Up 08:20:32 - 08:50:32 5518

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 472235, (2019/05/10 08:37UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0  5.46  87
86 Vir         13:45:56.3 -12:25:35  5.1  0.61  92
PPM 227806     13:45:52.3 -11:13:14  8.1  0.77  91
PPM 227847     13:47:22.1 -12:07:21  9.4  0.22  92
472235         13:47:16.3 -11:54:20 16.4        92
Positions are for J2000

Event circumstances last updated at 2019/02/12 07:42:35 UT

Marc W. Buie, Southwest Research Institute

RECON