RECON: TNO occultation with 05GF187

Event between 05GF187 and star UC4-353-085029 with event index number of 195516

Geocentric closest approach at 2019/04/22 10:26:40 UTC

J2000 position of star is 16:58:50.3 -19:24:26
Equinox of date position of star is 16:59:52.4 -19:25:58
Stellar brightness R=12.3, use SENSEUP=16
Star is 5 degrees from the moon. Moon is 89% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 29.5 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 14.9 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 501 seconds.
The 1-sigma cross-track error in the shadow position is 3318 km.
The sky-plane scale is 20858.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=157.8 km assuming a 5% albedo -- 10.6 sec chord
Diameter=64.4 km assuming a 30% albedo -- 4.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05GF187, (2019/04/22 10:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.7 -26:28:24  0.9  9.76   8
35Eta Oph      17:11:29.2 -15:44:51  2.6  4.60   9
PPM 232367     16:58:12.1 -19:34:09  6.1  0.44   5
PPM 232457     17:01:26.9 -19:11:45  8.3  0.42   6
PPM 232411     16:59:46.0 -19:26:02  8.9  0.05   5
05GF187        16:59:58.5 -19:26:07 12.3         6
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 1.8 sigma about the mid-time.
The median site spacing is 11.8 km RECON observability=1.0 and success probability=6.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:28:17 -20.3 Dark Up 21.4 173.0 Low 10:13:17 - 10:43:17 2811
Tonasket 10:28:17 -20.5 Dark Up 21.6 173.0 Low 10:13:17 - 10:43:17 2801
Okanogan 10:28:18 -20.8 Dark Up 21.9 172.9 Low 10:13:18 - 10:43:18 2784
Brewster 10:28:19 -21.1 Dark Up 22.2 172.6 Low 10:13:19 - 10:43:19 2769
Manson/Chelan 10:28:21 -21.4 Dark Up 22.4 172.3 Low 10:13:21 - 10:43:21 2755
Entiat 10:28:21 -21.6 Dark Up 22.6 172.2 Low 10:13:21 - 10:43:21 2744
Wenatchee 10:28:22 -21.9 Dark Up 22.8 172.1 Low 10:13:22 - 10:43:22 2731
Ellensburg 10:28:23 -22.3 Dark Up 23.2 171.8 Low 10:13:23 - 10:43:23 2709
Pasco 10:28:16 -22.2 Dark Up 24.1 173.2 Low 10:13:16 - 10:43:16 2696
Yakima 10:28:23 -22.6 Dark Up 23.6 171.8 Low 10:13:23 - 10:43:23 2689
PNWRO 10:28:15 -22.3 Dark Up 24.3 173.4 Low 10:13:15 - 10:43:15 2688
Toppenish/White Swan 10:28:22 -22.7 Dark Up 23.8 171.9 Low 10:13:22 - 10:43:22 2682
George/Umatilla 10:28:17 -22.6 Dark Up 24.4 173.0 Low 10:13:17 - 10:43:17 2677
Goldendale 10:28:24 -23.3 Dark Up 24.3 171.5 Low 10:13:24 - 10:43:24 2649
The Dalles 10:28:27 -23.6 Dark Up 24.5 171.1 Low 10:13:27 - 10:43:27 2632
Maupin 10:28:26 -23.9 Dark Up 25.0 171.2 Low 10:13:26 - 10:43:26 2613
Madras/Culver 10:28:27 -24.3 Dark Up 25.5 171.1 Low 10:13:27 - 10:43:27 2586
Niwot 10:27:00 -19.0 Dark Up 30.1 187.7 Up 10:12:00 - 10:42:00 2569
Redmond 10:28:27 -24.6 Dark Up 25.8 171.0 Low 10:13:27 - 10:43:27 2567
Sisters 10:28:29 -24.8 Dark Up 25.8 170.6 Low 10:13:29 - 10:43:29 2562
Bend 10:28:28 -24.9 Dark Up 26.0 170.9 Low 10:13:28 - 10:43:28 2554
Oregon Observatory 10:28:28 -25.1 Dark Up 26.2 170.7 Low 10:13:28 - 10:43:28 2543
La Pine/Gilchrist 10:28:28 -25.2 Dark Up 26.4 170.6 Low 10:13:28 - 10:43:28 2531
North Lake 10:28:25 -25.3 Dark Up 26.9 171.2 Low 10:13:25 - 10:43:25 2519
Paisley 10:28:24 -25.6 Dark Up 27.5 171.5 Low 10:13:24 - 10:43:24 2496
Lakeview 10:28:23 -25.9 Dark Up 28.0 171.7 Low 10:13:23 - 10:43:23 2472
Chiloquin 10:28:31 -26.3 Dark Up 27.4 170.2 Low 10:13:31 - 10:43:31 2467
Klamath Falls 10:28:31 -26.5 Dark Up 27.8 170.2 Low 10:13:31 - 10:43:31 2450
Tulelake 10:28:29 -26.6 Dark Up 28.1 170.5 Low 10:13:29 - 10:43:29 2440
Cedarville 10:28:22 -26.3 Dark Up 28.7 171.8 Low 10:13:22 - 10:43:22 2439
Fall River/Burney 10:28:28 -27.2 Dark Up 29.0 170.5 Low 10:13:28 - 10:43:28 2391
Susanville 10:28:25 -27.3 Dark Up 29.7 171.2 Low 10:13:25 - 10:43:25 2369
Gimple 10:28:26 -27.6 Dark Up 30.0 171.0 Low 10:13:26 - 10:43:26 2349
Greenville 10:28:26 -27.7 Dark Up 29.9 170.9 Low 10:13:26 - 10:43:26 2348
Portola 10:28:24 -27.7 Dark Up 30.3 171.4 Up 10:13:24 - 10:43:24 2337
Quincy 10:28:26 -27.8 Dark Up 30.1 170.9 Up 10:13:26 - 10:43:26 2336
Reno 10:28:20 -27.6 Dark Up 30.7 172.0 Up 10:13:20 - 10:43:20 2333
Carson City 10:28:20 -27.8 Dark Up 31.0 172.0 Up 10:13:20 - 10:43:20 2313
Yerington 10:28:16 -27.6 Dark Up 31.3 172.7 Up 10:13:16 - 10:43:16 2312
Gardnerville 10:28:20 -28.0 Dark Up 31.3 172.1 Up 10:13:20 - 10:43:20 2299
Hawthorne 10:28:13 -27.7 Dark Up 31.8 173.2 Up 10:13:13 - 10:43:13 2294
Tonopah 10:28:05 -27.3 Dark Up 32.4 174.7 Up 10:13:05 - 10:43:05 2290
Lee Vining 10:28:16 -28.4 Dark Up 32.3 172.7 Up 10:13:16 - 10:43:16 2252
Bishop 10:28:12 -28.4 Dark Up 33.0 173.4 Up 10:13:12 - 10:43:12 2227
Beatty 10:28:02 -27.8 Dark Up 33.5 175.2 Up 10:13:02 - 10:43:02 2226
Indian Springs 10:27:56 -27.4 Dark Up 33.9 176.4 Up 10:12:56 - 10:42:56 2224
Henderson 10:27:52 -27.4 Dark Up 34.5 177.1 Up 10:12:52 - 10:42:52 2201
Lone Pine 10:28:09 -28.8 Dark Up 33.7 173.7 Up 10:13:09 - 10:43:09 2186
Patrick 10:27:45 -27.2 Dark Up 35.2 178.3 Up 10:12:45 - 10:42:45 2179
DCO 10:27:41 -26.9 Dark Up 35.5 179.1 Up 10:12:41 - 10:42:41 2171
Searchlight/Boulder City 10:27:51 -27.7 Dark Up 35.1 177.2 Up 10:12:51 - 10:42:51 2166
Kingman/Dolan Springs 10:27:46 -27.4 Dark Up 35.4 178.1 Up 10:12:46 - 10:42:46 2162
Laughlin/Bullhead City 10:27:49 -27.7 Dark Up 35.4 177.5 Up 10:12:49 - 10:42:49 2152
Mohave Valley 10:27:49 -27.9 Dark Up 35.7 177.5 Up 10:12:49 - 10:42:49 2135
Lake Havasu City 10:27:47 -28.0 Dark Up 36.1 177.8 Up 10:12:47 - 10:42:47 2113
Parker 10:27:47 -28.2 Dark Up 36.4 177.8 Up 10:12:47 - 10:42:47 2090
CPSLO 10:28:25 -31.1 Dark Up 34.8 170.7 Up 10:13:25 - 10:43:25 2056
Blythe 10:27:49 -28.8 Dark Up 36.9 177.5 Up 10:12:49 - 10:42:49 2051
Idyllwild 10:28:00 -30.0 Dark Up 36.7 175.0 Up 10:13:00 - 10:43:00 2025
Wildwood 10:28:12 -30.8 Dark Up 36.2 172.9 Up 10:13:12 - 10:43:12 2015
Calipatria 10:27:53 -29.7 Dark Up 37.4 176.4 Up 10:12:53 - 10:42:53 2003
Yuma 10:27:48 -29.4 Dark Up 37.9 177.4 Up 10:12:48 - 10:42:48 1989

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 05GF187, (2019/04/22 10:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.76   8
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.60   9
PPM 232367     16:57:03.9 -19:32:25  6.1  0.44   5
PPM 232457     17:00:18.9 -19:10:06  8.3  0.42   6
PPM 232411     16:58:37.8 -19:24:20  8.9  0.05   5
05GF187        16:58:50.3 -19:24:26 12.3         5
Positions are for J2000

Event circumstances last updated at 2017/08/04 18:05:38 UT

Marc W. Buie, Southwest Research Institute

RECON