RECON: TNO occultation with 471318

Event between (471318) 11JF31 and star GA0700:05852956 with event index number of 186391

Geocentric closest approach at 2019/05/04 06:49:19 UTC

J2000 position of star is 15:36:17.0 -19:42:18
Equinox of date position of star is 15:37:20.8 -19:45:54
Stellar brightness G=16.6, use SENSEUP=128
Star is 159 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 42.4 AU from the Sun and 41.4 AU from the Earth.
The TNO is moving 24.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 359 seconds.
The 1-sigma cross-track error in the shadow position is 4586 km.
The sky-plane scale is 30046.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.2
Diameter=549.6 km assuming a 5% albedo -- 22.2 sec chord
Diameter=224.4 km assuming a 30% albedo -- 9.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 471318, (2019/05/04 06:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.8 -26:28:24  0.9 13.94 145
7Del Sco       16:01:28.8 -22:40:31  2.3  6.32 152
41 Lib         15:40:01.6 -19:21:51  5.3  0.74 158
PPM 230514     15:39:32.2 -19:58:33  7.1  0.54 158
PPM 230472     15:37:43.2 -19:52:49  9.9  0.14 158
471318         15:37:23.9 -19:46:05 16.6       158
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 2.5 sigma about the mid-time.
The median site spacing is 9.2 km RECON observability=0.7 and success probability=4.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 06:48:06 -22.9 Dark Down 15.9 151.0 Really Low 06:33:06 - 07:03:06 4975
Oroville 06:48:06 -23.5 Dark Down 16.5 151.0 Really Low 06:33:06 - 07:03:06 4946
Tonasket 06:48:07 -23.7 Dark Down 16.7 151.0 Really Low 06:33:07 - 07:03:07 4934
Okanogan 06:48:07 -24.0 Dark Down 16.9 150.8 Really Low 06:33:07 - 07:03:07 4910
Niwot 06:47:34 -33.9 Dark Down 28.5 163.4 Low 06:32:34 - 07:02:34 4901
Brewster 06:48:08 -24.2 Dark Down 17.1 150.5 Really Low 06:33:08 - 07:03:08 4888
Manson/Chelan 06:48:10 -24.4 Dark Down 17.2 150.2 Really Low 06:33:10 - 07:03:10 4865
Entiat 06:48:10 -24.6 Dark Down 17.3 150.1 Really Low 06:33:10 - 07:03:10 4850
Wenatchee 06:48:10 -24.8 Dark Down 17.5 150.0 Really Low 06:33:10 - 07:03:10 4832
Pasco 06:48:08 -26.1 Dark Down 18.9 150.9 Really Low 06:33:08 - 07:03:08 4804
Ellensburg 06:48:11 -25.1 Dark Down 17.8 149.7 Really Low 06:33:11 - 07:03:11 4801
PNWRO 06:48:08 -26.4 Dark Down 19.2 151.0 Really Low 06:33:08 - 07:03:08 4797
George/Umatilla 06:48:10 -26.4 Dark Down 19.1 150.6 Really Low 06:33:10 - 07:03:10 4777
Yakima 06:48:11 -25.5 Dark Down 18.1 149.6 Really Low 06:33:11 - 07:03:11 4777
Toppenish/White Swan 06:48:12 -25.7 Dark Down 18.4 149.7 Really Low 06:33:12 - 07:03:12 4770
Goldendale 06:48:13 -26.2 Dark Down 18.7 149.2 Really Low 06:33:13 - 07:03:13 4723
The Dalles 06:48:14 -26.3 Dark Down 18.8 148.9 Really Low 06:33:14 - 07:03:14 4697
Maupin 06:48:14 -26.7 Dark Down 19.2 148.9 Really Low 06:33:14 - 07:03:14 4675
Madras/Culver 06:48:15 -27.2 Dark Down 19.6 148.8 Really Low 06:33:15 - 07:03:15 4640
Redmond 06:48:15 -27.5 Dark Down 19.9 148.6 Really Low 06:33:15 - 07:03:15 4616
Sisters 06:48:17 -27.4 Dark Down 19.7 148.3 Really Low 06:33:17 - 07:03:17 4603
Bend 06:48:15 -27.7 Dark Down 20.0 148.5 Low 06:33:15 - 07:03:15 4597
Oregon Observatory 06:48:17 -27.8 Dark Down 20.1 148.3 Low 06:33:17 - 07:03:17 4582
La Pine/Gilchrist 06:48:16 -28.0 Dark Down 20.3 148.2 Low 06:33:16 - 07:03:16 4567
North Lake 06:48:15 -28.6 Dark Down 20.9 148.7 Low 06:33:15 - 07:03:15 4560
Paisley 06:48:15 -29.2 Dark Down 21.5 148.9 Low 06:33:15 - 07:03:15 4538
Lakeview 06:48:15 -29.7 Dark Down 22.0 149.0 Low 06:33:15 - 07:03:15 4512
Chiloquin 06:48:18 -29.0 Dark Down 21.1 147.7 Low 06:33:18 - 07:03:18 4483
Cedarville 06:48:15 -30.4 Dark Down 22.6 149.0 Low 06:33:15 - 07:03:15 4475
Klamath Falls 06:48:18 -29.3 Dark Down 21.4 147.7 Low 06:33:18 - 07:03:18 4464
Tulelake 06:48:18 -29.6 Dark Down 21.8 147.9 Low 06:33:18 - 07:03:18 4457
Fall River/Burney 06:48:18 -30.5 Dark Down 22.6 147.8 Low 06:33:18 - 07:03:18 4399
Susanville 06:48:17 -31.3 Dark Down 23.4 148.3 Low 06:33:17 - 07:03:17 4384
Gimple 06:48:18 -31.5 Dark Down 23.6 148.1 Low 06:33:18 - 07:03:18 4357
Reno 06:48:15 -32.3 Dark Down 24.5 148.9 Low 06:33:15 - 07:03:15 4356
Greenville 06:48:18 -31.5 Dark Down 23.5 148.0 Low 06:33:18 - 07:03:18 4355
Tonopah 06:48:09 -34.4 Dark Down 26.8 151.0 Low 06:33:09 - 07:03:09 4350
Portola 06:48:17 -31.9 Dark Down 24.0 148.4 Low 06:33:17 - 07:03:17 4350
Yerington 06:48:14 -33.0 Dark Down 25.2 149.4 Low 06:33:14 - 07:03:14 4342
Quincy 06:48:18 -31.7 Dark Down 23.7 148.0 Low 06:33:18 - 07:03:18 4341
Carson City 06:48:16 -32.7 Dark Down 24.8 148.8 Low 06:33:16 - 07:03:16 4332
Hawthorne 06:48:14 -33.6 Dark Down 25.8 149.8 Low 06:33:14 - 07:03:14 4330
Gardnerville 06:48:15 -32.9 Dark Down 25.0 148.8 Low 06:33:15 - 07:03:15 4317
Indian Springs 06:48:05 -36.1 Dark Down 28.7 152.1 Low 06:33:05 - 07:03:05 4304
DCO 06:47:58 -38.1 Dark Down 30.9 154.2 Up 06:32:58 - 07:02:58 4296
Henderson 06:48:04 -36.8 Dark Down 29.4 152.7 Low 06:33:04 - 07:03:04 4293
Patrick 06:48:00 -37.6 Dark Down 30.3 153.6 Up 06:33:00 - 07:03:00 4291
Beatty 06:48:08 -35.6 Dark Down 28.0 151.1 Low 06:33:08 - 07:03:08 4287
Lee Vining 06:48:15 -34.0 Dark Down 26.1 149.2 Low 06:33:15 - 07:03:15 4272
Kingman/Dolan Springs 06:48:01 -37.8 Dark Down 30.5 153.3 Up 06:33:01 - 07:03:01 4268
Bishop 06:48:12 -34.8 Dark Down 26.9 149.7 Low 06:33:12 - 07:03:12 4258
Searchlight/Boulder City 06:48:03 -37.4 Dark Down 29.9 152.6 Low 06:33:03 - 07:03:03 4255
Laughlin/Bullhead City 06:48:02 -37.7 Dark Down 30.3 152.8 Up 06:33:02 - 07:03:02 4247
Mohave Valley 06:48:02 -38.0 Dark Down 30.6 152.8 Up 06:33:02 - 07:03:02 4228
Lone Pine 06:48:12 -35.6 Dark Down 27.7 149.8 Low 06:33:12 - 07:03:12 4217
Lake Havasu City 06:48:02 -38.4 Dark Down 31.0 152.9 Up 06:33:02 - 07:03:02 4209
Parker 06:48:02 -38.8 Dark Down 31.3 152.8 Up 06:33:02 - 07:03:02 4184
Blythe 06:48:03 -39.2 Dark Down 31.7 152.4 Up 06:33:03 - 07:03:03 4135
Yuma 06:48:03 -40.1 Dark Down 32.5 152.1 Up 06:33:03 - 07:03:03 4066
Calipatria 06:48:06 -39.5 Dark Down 31.7 151.3 Up 06:33:06 - 07:03:06 4063
Idyllwild 06:48:09 -38.6 Dark Down 30.7 150.3 Up 06:33:09 - 07:03:09 4062
CPSLO 06:48:20 -36.1 Dark Down 27.7 147.0 Low 06:33:20 - 07:03:20 4024
Wildwood 06:48:15 -37.8 Dark Down 29.6 148.6 Low 06:33:15 - 07:03:15 4015

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 471318, (2019/05/04 06:49UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.94 145
7Del Sco       16:00:20.0 -22:37:18  2.3  6.32 152
41 Lib         15:38:54.7 -19:18:08  5.3  0.74 158
PPM 230514     15:38:25.1 -19:54:49  7.1  0.54 158
PPM 230472     15:36:36.2 -19:49:03  9.9  0.14 158
471318         15:36:17.0 -19:42:18 16.6       159
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:05:35 UT

Marc W. Buie, Southwest Research Institute

RECON