RECON: TNO occultation with 10RF188

Event between 10RF188 and star GA0900:00071811 with event index number of 234447

Geocentric closest approach at 2019/10/18 05:43:24 UTC

J2000 position of star is 00:48:54.3 +01:32:03
Equinox of date position of star is 00:49:52.1 +01:38:09
Stellar brightness G=14.3, use SENSEUP=64
Star is 63 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 54.8 AU from the Sun and 53.8 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 560 seconds.
The 1-sigma cross-track error in the shadow position is 5652 km.
The sky-plane scale is 39053.6 km/arcsec.

The TNO has an absolute magnitude Hv=5.0
Diameter=599.8 km assuming a 5% albedo -- 23.4 sec chord
Diameter=244.9 km assuming a 30% albedo -- 9.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 10RF188, (2019/10/18 05:43UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:44.4 -29:31:01  1.2 40.94  99
Algenib        00:14:15.5 +15:17:37  2.8 16.24  66
20 Cet         00:54:01.3 -01:02:14  4.8  2.87  63
PPM 143914     00:49:34.2 +00:29:23  8.2  1.16  63
PPM 143915     00:49:39.6 +01:44:22  9.7  0.12  62
10RF188        00:49:55.4 +01:38:30 14.3        62
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 1.6 sigma about the mid-time.
The median site spacing is 15.3 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 05:42:59 -42.6 Dark Up 38.9 154.7 Up 05:27:59 - 05:57:59 584
Penticton 05:43:00 -42.8 Dark Up 39.2 154.4 Up 05:28:00 - 05:58:00 568
Okanagan Falls 05:43:01 -42.9 Dark Up 39.3 154.3 Up 05:28:01 - 05:58:01 558
Southern Okanagan 05:43:01 -43.1 Dark Up 39.5 154.3 Up 05:28:01 - 05:58:01 548
Oroville 05:43:01 -43.3 Dark Up 39.7 154.3 Up 05:28:01 - 05:58:01 531
Tonasket 05:43:01 -43.5 Dark Up 40.0 154.2 Up 05:28:01 - 05:58:01 517
Okanogan 05:43:03 -43.6 Dark Up 40.2 153.9 Up 05:28:03 - 05:58:03 502
Brewster 05:43:04 -43.8 Dark Up 40.4 153.6 Up 05:28:04 - 05:58:04 492
Manson/Chelan 05:43:05 -43.7 Dark Up 40.5 153.0 Up 05:28:05 - 05:58:05 490
Entiat 05:43:06 -43.9 Dark Up 40.6 152.9 Up 05:28:06 - 05:58:06 479
Wenatchee 05:43:07 -44.0 Dark Up 40.8 152.7 Up 05:28:07 - 05:58:07 467
Ellensburg 05:43:08 -44.2 Dark Up 41.1 152.2 Up 05:28:08 - 05:58:08 449
Yakima 05:43:09 -44.5 Dark Up 41.5 152.0 Up 05:28:09 - 05:58:09 425
Toppenish/White Swan 05:43:09 -44.7 Dark Up 41.7 152.2 Up 05:28:09 - 05:58:09 407
Goldendale 05:43:12 -44.9 Dark Up 42.1 151.4 Up 05:28:12 - 05:58:12 385
The Dalles 05:43:13 -44.9 Dark Up 42.2 150.8 Up 05:28:13 - 05:58:13 382
Pasco 05:43:06 -45.4 Dark Up 42.3 153.7 Up 05:28:06 - 05:58:06 361
Maupin 05:43:14 -45.2 Dark Up 42.6 150.8 Up 05:28:14 - 05:58:14 353
George/Umatilla 05:43:08 -45.5 Dark Up 42.5 153.3 Up 05:28:08 - 05:58:08 347
PNWRO 05:43:06 -45.7 Dark Up 42.5 153.9 Up 05:28:06 - 05:58:06 339
Madras/Culver 05:43:15 -45.5 Dark Up 43.0 150.5 Up 05:28:15 - 05:58:15 320
Sisters 05:43:17 -45.5 Dark Up 43.2 149.8 Up 05:28:17 - 05:58:17 313
Redmond 05:43:16 -45.8 Dark Up 43.3 150.3 Up 05:28:16 - 05:58:16 299
Bend 05:43:17 -45.8 Dark Up 43.5 150.0 Up 05:28:17 - 05:58:17 290
Oregon Observatory 05:43:17 -45.9 Dark Up 43.6 149.7 Up 05:28:17 - 05:58:17 283
La Pine/Gilchrist 05:43:18 -46.0 Dark Up 43.7 149.6 Up 05:28:18 - 05:58:18 272
North Lake 05:43:17 -46.6 Dark Up 44.3 150.1 Up 05:28:17 - 05:58:17 225
Chiloquin 05:43:22 -46.5 Dark Up 44.6 148.6 Up 05:28:22 - 05:58:22 210
Klamath Falls 05:43:22 -46.8 Dark Up 44.9 148.5 Up 05:28:22 - 05:58:22 185
Paisley 05:43:18 -47.2 Dark Up 44.9 150.3 Up 05:28:18 - 05:58:18 177
Tulelake 05:43:22 -47.1 Dark Up 45.2 148.8 Up 05:28:22 - 05:58:22 158
Lakeview 05:43:18 -47.6 Dark Up 45.4 150.3 Up 05:28:18 - 05:58:18 138
Fall River/Burney 05:43:24 -47.8 Dark Up 46.0 148.4 Up 05:28:24 - 05:58:24 94
Cedarville 05:43:19 -48.1 Dark Up 46.1 150.3 Up 05:28:19 - 05:58:19 88
Susanville 05:43:23 -48.6 Dark Up 46.9 149.0 Up 05:28:23 - 05:58:23 27
Greenville 05:43:25 -48.6 Dark Up 47.0 148.5 Up 05:28:25 - 05:58:25 18
Gimple 05:43:24 -48.6 Dark Up 47.0 148.6 Up 05:28:24 - 05:58:24 15
Quincy 05:43:25 -48.7 Dark Up 47.2 148.4 Up 05:28:25 - 05:58:25 5
Portola 05:43:24 -49.1 Dark Up 47.5 149.0 Up 05:28:24 - 05:58:24 -21
Reno 05:43:22 -49.6 Dark Up 47.9 149.7 Up 05:28:22 - 05:58:22 -61
Carson City 05:43:23 -49.9 Dark Up 48.3 149.5 Up 05:28:23 - 05:58:23 -87
Gardnerville 05:43:24 -50.1 Dark Up 48.5 149.4 Up 05:28:24 - 05:58:24 -106
Yerington 05:43:22 -50.4 Dark Up 48.7 150.3 Up 05:28:22 - 05:58:22 -122
Hawthorne 05:43:22 -51.0 Dark Up 49.3 150.8 Up 05:28:22 - 05:58:22 -173
Lee Vining 05:43:24 -51.1 Dark Up 49.6 149.8 Up 05:28:24 - 05:58:24 -198
Tonopah 05:43:19 -52.1 Dark Up 50.2 152.5 Up 05:28:19 - 05:58:19 -256
Bishop 05:43:23 -51.9 Dark Up 50.4 150.4 Up 05:28:23 - 05:58:23 -267
Lone Pine 05:43:24 -52.6 Dark Up 51.2 150.5 Up 05:28:24 - 05:58:24 -335
CPSLO 05:43:34 -51.7 Dark Up 51.2 145.9 Up 05:28:34 - 05:58:34 -342
Beatty 05:43:19 -53.2 Dark Up 51.4 152.5 Up 05:28:19 - 05:58:19 -357
Indian Springs 05:43:17 -54.0 Dark Up 52.1 154.0 Up 05:28:17 - 05:58:17 -420
Henderson 05:43:16 -54.8 Dark Up 52.8 154.7 Up 05:28:16 - 05:58:16 -485
Wildwood 05:43:31 -53.8 Dark Up 53.1 148.1 Up 05:28:31 - 05:58:31 -507
Niwot 05:42:39 -56.3 Dark Up 51.1 171.5 Up 05:27:39 - 05:57:39 -513
Searchlight/Boulder City 05:43:17 -55.2 Dark Up 53.4 154.5 Up 05:28:17 - 05:58:17 -532
Laughlin/Bullhead City 05:43:16 -55.6 Dark Up 53.7 154.9 Up 05:28:16 - 05:58:16 -567
Patrick 05:43:14 -55.9 Dark Up 53.8 156.1 Up 05:28:14 - 05:58:14 -574
Kingman/Dolan Springs 05:43:15 -55.9 Dark Up 53.9 155.7 Up 05:28:15 - 05:58:15 -584
Mohave Valley 05:43:17 -55.8 Dark Up 54.0 154.7 Up 05:28:17 - 05:58:17 -589
Idyllwild 05:43:26 -55.2 Dark Up 54.2 150.7 Up 05:28:26 - 05:58:26 -603
DCO 05:43:12 -56.5 Dark Up 54.3 157.1 Up 05:28:12 - 05:58:12 -623
Lake Havasu City 05:43:17 -56.2 Dark Up 54.4 154.9 Up 05:28:17 - 05:58:17 -630
Parker 05:43:17 -56.5 Dark Up 54.8 154.7 Up 05:28:17 - 05:58:17 -659
Blythe 05:43:19 -56.7 Dark Up 55.1 153.9 Up 05:28:19 - 05:58:19 -690
Calipatria 05:43:23 -56.4 Dark Up 55.2 152.1 Up 05:28:23 - 05:58:23 -695
Yuma 05:43:21 -57.2 Dark Up 56.0 153.3 Up 05:28:21 - 05:58:21 -763

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 10RF188, (2019/10/18 05:43UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 40.94  99
Algenib        00:13:14.2 +15:11:01  2.8 16.24  66
20 Cet         00:53:00.5 -01:08:40  4.8  2.87  63
PPM 143914     00:48:33.3 +00:22:55  8.2  1.16  63
PPM 143915     00:48:38.5 +01:37:55  9.7  0.12  62
10RF188        00:48:54.3 +01:32:03 14.3        62
Positions are for J2000

Event circumstances last updated at 2018/09/24 17:51:52 UT

Marc W. Buie, Southwest Research Institute

RECON