RECON: TNO occultation with 05GF187

Event between 05GF187 and star GA0700:07078059 with event index number of 195538

Geocentric closest approach at 2019/06/21 07:31:00 UTC

J2000 position of star is 16:52:41.6 -19:14:05
Equinox of date position of star is 16:53:50.1 -19:15:57
Stellar brightness G=14.7, use SENSEUP=128
Star is 61 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 29.5 AU from the Sun and 28.5 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 198 seconds.
The 1-sigma cross-track error in the shadow position is 1433 km.
The sky-plane scale is 20673.7 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=144.5 km assuming a 5% albedo -- 6.5 sec chord
Diameter=59.0 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05GF187, (2019/06/21 07:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9  8.97  65
35Eta Oph      17:11:29.8 -15:44:52  2.6  5.49  58
PPM 232367     16:58:12.6 -19:34:10  6.1  1.08  60
PPM 232254     16:53:29.1 -19:23:19  8.5  0.15  61
PPM 232251     16:53:21.5 -19:11:38  8.9  0.13  61
05GF187        16:53:50.2 -19:15:57 14.7        61
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 4.5 sigma about the mid-time.
The median site spacing is 11.2 km RECON observability=1.0 and success probability=9.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:30:53 -16.4 AT Up 20.4 189.4 Low 07:15:53 - 07:45:53 2751
Summerland 07:30:53 -16.7 AT Up 20.7 189.2 Low 07:15:53 - 07:45:53 2739
Penticton 07:30:53 -16.7 AT Up 20.7 189.3 Low 07:15:53 - 07:45:53 2737
Okanagan Falls 07:30:53 -16.9 AT Up 20.9 189.3 Low 07:15:53 - 07:45:53 2729
Oliver 07:30:53 -17.1 AT Up 21.1 189.3 Low 07:15:53 - 07:45:53 2723
Anarchist Mountain Observatory 07:30:52 -17.3 AT Up 21.2 189.5 Low 07:15:52 - 07:45:52 2716
Oroville 07:30:52 -17.3 AT Up 21.3 189.4 Low 07:15:52 - 07:45:52 2713
Tonasket 07:30:52 -17.6 AT Up 21.6 189.5 Low 07:15:52 - 07:45:52 2704
Okanogan 07:30:53 -17.9 AT Up 21.9 189.3 Low 07:15:53 - 07:45:53 2689
Brewster 07:30:53 -18.2 Dark Up 22.2 189.2 Low 07:15:53 - 07:45:53 2678
Manson/Chelan 07:30:54 -18.3 Dark Up 22.4 188.8 Low 07:15:54 - 07:45:54 2668
Entiat 07:30:54 -18.5 Dark Up 22.7 188.7 Low 07:15:54 - 07:45:54 2658
Wenatchee 07:30:54 -18.8 Dark Up 22.9 188.7 Low 07:15:54 - 07:45:54 2647
Ellensburg 07:30:55 -19.2 Dark Up 23.4 188.5 Low 07:15:55 - 07:45:55 2629
Yakima 07:30:54 -19.6 Dark Up 23.8 188.5 Low 07:15:54 - 07:45:54 2611
Toppenish/White Swan 07:30:54 -19.8 Dark Up 24.0 188.7 Low 07:15:54 - 07:45:54 2601
Pasco 07:30:49 -20.0 Dark Up 23.9 189.9 Low 07:15:49 - 07:45:49 2599
PNWRO 07:30:48 -20.3 Dark Up 24.2 190.2 Low 07:15:48 - 07:45:48 2588
George/Umatilla 07:30:50 -20.4 Dark Up 24.3 189.7 Low 07:15:50 - 07:45:50 2583
Goldendale 07:30:55 -20.3 Dark Up 24.5 188.3 Low 07:15:55 - 07:45:55 2575
The Dalles 07:30:56 -20.5 Dark Up 24.8 187.9 Low 07:15:56 - 07:45:56 2563
Maupin 07:30:55 -20.9 Dark Up 25.2 188.0 Low 07:15:55 - 07:45:55 2544
Madras/Culver 07:30:55 -21.5 Dark Up 25.8 188.0 Low 07:15:55 - 07:45:55 2518
Redmond 07:30:55 -21.8 Dark Up 26.1 188.0 Low 07:15:55 - 07:45:55 2500
Sisters 07:30:57 -21.7 Dark Up 26.1 187.6 Low 07:15:57 - 07:45:57 2500
Bend 07:30:55 -22.0 Dark Up 26.3 187.9 Low 07:15:55 - 07:45:55 2490
Oregon Observatory 07:30:56 -22.2 Dark Up 26.5 187.7 Low 07:15:56 - 07:45:56 2481
La Pine/Gilchrist 07:30:56 -22.4 Dark Up 26.7 187.7 Low 07:15:56 - 07:45:56 2470
North Lake 07:30:53 -22.9 Dark Up 27.1 188.3 Low 07:15:53 - 07:45:53 2450
Paisley 07:30:52 -23.4 Dark Up 27.6 188.8 Low 07:15:52 - 07:45:52 2423
Chiloquin 07:30:57 -23.4 Dark Up 27.9 187.4 Low 07:15:57 - 07:45:57 2413
Lakeview 07:30:51 -24.0 Dark Up 28.1 189.0 Low 07:15:51 - 07:45:51 2398
Klamath Falls 07:30:56 -23.8 Dark Up 28.2 187.5 Low 07:15:56 - 07:45:56 2395
Tulelake 07:30:55 -24.1 Dark Up 28.4 187.8 Low 07:15:55 - 07:45:55 2382
Cedarville 07:30:49 -24.6 Dark Up 28.7 189.2 Low 07:15:49 - 07:45:49 2363
Fall River/Burney 07:30:54 -25.0 Dark Up 29.3 188.0 Low 07:15:54 - 07:45:54 2334
Susanville 07:30:51 -25.7 Dark Up 29.9 188.8 Low 07:15:51 - 07:45:51 2301
Gimple 07:30:51 -25.9 Dark Up 30.2 188.6 Up 07:15:51 - 07:45:51 2285
Greenville 07:30:52 -25.9 Dark Up 30.2 188.5 Up 07:15:52 - 07:45:52 2285
Niwot 07:29:54 -26.1 Dark Up 26.8 204.8 Low 07:14:54 - 07:44:54 2275
Quincy 07:30:52 -26.1 Dark Up 30.4 188.6 Up 07:15:52 - 07:45:52 2274
SwRI 07:29:54 -26.2 Dark Up 26.9 204.7 Low 07:14:54 - 07:44:54 2269
Portola 07:30:50 -26.3 Dark Up 30.5 189.1 Up 07:15:50 - 07:45:50 2268
Reno 07:30:47 -26.6 Dark Up 30.6 189.8 Up 07:15:47 - 07:45:47 2255
Carson City 07:30:47 -27.0 Dark Up 31.0 189.9 Up 07:15:47 - 07:45:47 2235
Yerington 07:30:44 -27.2 Dark Up 31.1 190.6 Up 07:15:44 - 07:45:44 2225
Gardnerville 07:30:47 -27.2 Dark Up 31.2 189.9 Up 07:15:47 - 07:45:47 2221
Hawthorne 07:30:42 -27.8 Dark Up 31.5 191.2 Up 07:15:42 - 07:45:42 2200
Tonopah 07:30:36 -28.3 Dark Up 31.7 192.8 Up 07:15:36 - 07:45:36 2175
Lee Vining 07:30:43 -28.3 Dark Up 32.1 190.7 Up 07:15:43 - 07:45:43 2165
Bishop 07:30:40 -28.9 Dark Up 32.6 191.6 Up 07:15:40 - 07:45:40 2131
Beatty 07:30:33 -29.5 Dark Up 32.7 193.4 Up 07:15:33 - 07:45:33 2106
Indian Springs 07:30:29 -29.9 Dark Up 32.9 194.6 Up 07:15:29 - 07:45:29 2087
Lone Pine 07:30:38 -29.7 Dark Up 33.3 192.0 Up 07:15:38 - 07:45:38 2086
Henderson 07:30:26 -30.5 Dark Up 33.2 195.5 Up 07:15:26 - 07:45:26 2054
Searchlight/Boulder City 07:30:25 -31.0 Dark Up 33.8 195.6 Up 07:15:25 - 07:45:25 2018
Patrick 07:30:21 -31.1 Dark Up 33.6 196.8 Up 07:15:21 - 07:45:21 2015
Kingman/Dolan Springs 07:30:22 -31.3 Dark Up 33.8 196.6 Up 07:15:22 - 07:45:22 2001
Laughlin/Bullhead City 07:30:23 -31.4 Dark Up 34.0 196.1 Up 07:15:23 - 07:45:23 2000
CPSLO 07:30:48 -30.7 Dark Up 34.9 189.3 Up 07:15:48 - 07:45:48 1998
DCO 07:30:18 -31.5 Dark Up 33.7 197.6 Up 07:15:18 - 07:45:18 1996
Mohave Valley 07:30:23 -31.6 Dark Up 34.2 196.1 Up 07:15:23 - 07:45:23 1982
Lake Havasu City 07:30:22 -32.0 Dark Up 34.6 196.5 Up 07:15:22 - 07:45:22 1957
Parker 07:30:22 -32.4 Dark Up 34.9 196.6 Up 07:15:22 - 07:45:22 1934
Wildwood 07:30:39 -32.2 Dark Up 35.8 191.8 Up 07:15:39 - 07:45:39 1925
Idyllwild 07:30:31 -32.7 Dark Up 35.8 194.0 Up 07:15:31 - 07:45:31 1905
Blythe 07:30:22 -32.9 Dark Up 35.5 196.3 Up 07:15:22 - 07:45:22 1899
Calipatria 07:30:26 -33.3 Dark Up 36.2 195.4 Up 07:15:26 - 07:45:26 1866
Yuma 07:30:22 -33.8 Dark Up 36.4 196.5 Up 07:15:22 - 07:45:22 1837

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, (2019/06/21 07:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.97  65
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.49  58
PPM 232367     16:57:03.9 -19:32:25  6.1  1.08  60
PPM 232254     16:52:20.5 -19:21:26  8.5  0.15  61
PPM 232251     16:52:13.0 -19:09:45  8.9  0.13  61
05GF187        16:52:41.6 -19:14:05 14.7        61
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:18:27 UT

Marc W. Buie, Southwest Research Institute

RECON