RECON: TNO occultation with 05GF187

Event between 05GF187 and star GA0700:07407703 with event index number of 195516

Geocentric closest approach at 2019/04/22 10:25:34 UTC

J2000 position of star is 16:58:50.3 -19:24:25
Equinox of date position of star is 16:59:55.4 -19:26:02
Stellar brightness G=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 513 seconds.
The 1-sigma cross-track error in the shadow position is 2866 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 10:26UT)
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 12.3 km RECON observability=1.0 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 10:27:15 -20.0 Dark Up 20.8 172.7 Low 10:12:15 - 10:42:15 6319
Oroville 10:27:14 -20.4 Dark Up 21.4 172.8 Low 10:12:14 - 10:42:14 6295
Tonasket 10:27:13 -20.6 Dark Up 21.6 172.8 Low 10:12:13 - 10:42:13 6285
Okanogan 10:27:15 -20.9 Dark Up 21.9 172.6 Low 10:12:15 - 10:42:15 6269
Brewster 10:27:15 -21.2 Dark Up 22.2 172.4 Low 10:12:15 - 10:42:15 6254
Manson/Chelan 10:27:17 -21.5 Dark Up 22.3 172.0 Low 10:12:17 - 10:42:17 6239
Entiat 10:27:18 -21.7 Dark Up 22.6 171.9 Low 10:12:18 - 10:42:18 6228
Wenatchee 10:27:19 -22.0 Dark Up 22.8 171.8 Low 10:12:19 - 10:42:19 6215
Ellensburg 10:27:19 -22.4 Dark Up 23.2 171.6 Low 10:12:19 - 10:42:19 6192
Pasco 10:27:12 -22.3 Dark Up 24.0 172.9 Low 10:12:12 - 10:42:12 6180
Yakima 10:27:19 -22.7 Dark Up 23.6 171.5 Low 10:12:19 - 10:42:19 6173
PNWRO 10:27:11 -22.4 Dark Up 24.3 173.2 Low 10:12:11 - 10:42:11 6172
Toppenish/White Swan 10:27:19 -22.8 Dark Up 23.8 171.7 Low 10:12:19 - 10:42:19 6166
George/Umatilla 10:27:14 -22.7 Dark Up 24.4 172.7 Low 10:12:14 - 10:42:14 6161
Goldendale 10:27:22 -23.4 Dark Up 24.3 171.2 Low 10:12:22 - 10:42:22 6133
The Dalles 10:27:23 -23.7 Dark Up 24.5 170.8 Low 10:12:23 - 10:42:23 6116
Maupin 10:27:22 -24.0 Dark Up 24.9 170.9 Low 10:12:22 - 10:42:22 6097
Madras/Culver 10:27:23 -24.5 Dark Up 25.5 170.8 Low 10:12:23 - 10:42:23 6069
Niwot 10:25:57 -19.1 Dark Up 30.1 187.4 Up 10:10:57 - 10:40:57 6054
Redmond 10:27:23 -24.8 Dark Up 25.8 170.7 Low 10:12:23 - 10:42:23 6050
Sisters 10:27:25 -24.9 Dark Up 25.7 170.3 Low 10:12:25 - 10:42:25 6044
Bend 10:27:24 -25.0 Dark Up 26.0 170.6 Low 10:12:24 - 10:42:24 6037
Oregon Observatory 10:27:25 -25.2 Dark Up 26.2 170.4 Low 10:12:25 - 10:42:25 6026
La Pine/Gilchrist 10:27:25 -25.4 Dark Up 26.4 170.3 Low 10:12:25 - 10:42:25 6014
North Lake 10:27:22 -25.4 Dark Up 26.9 170.9 Low 10:12:22 - 10:42:22 6002
Paisley 10:27:20 -25.7 Dark Up 27.4 171.3 Low 10:12:20 - 10:42:20 5978
Lakeview 10:27:19 -26.0 Dark Up 28.0 171.4 Low 10:12:19 - 10:42:19 5954
Chiloquin 10:27:26 -26.4 Dark Up 27.4 169.9 Low 10:12:26 - 10:42:26 5949
Klamath Falls 10:27:26 -26.6 Dark Up 27.8 169.9 Low 10:12:26 - 10:42:26 5932
Tulelake 10:27:25 -26.7 Dark Up 28.1 170.2 Low 10:12:25 - 10:42:25 5922
Cedarville 10:27:18 -26.4 Dark Up 28.6 171.5 Low 10:12:18 - 10:42:18 5922
Fall River/Burney 10:27:25 -27.3 Dark Up 29.0 170.2 Low 10:12:25 - 10:42:25 5873
Susanville 10:27:21 -27.5 Dark Up 29.7 170.9 Low 10:12:21 - 10:42:21 5851
Gimple 10:27:22 -27.8 Dark Up 29.9 170.7 Low 10:12:22 - 10:42:22 5831
Greenville 10:27:22 -27.8 Dark Up 29.9 170.6 Low 10:12:22 - 10:42:22 5830
Portola 10:27:20 -27.8 Dark Up 30.3 171.1 Up 10:12:20 - 10:42:20 5819
Quincy 10:27:22 -28.0 Dark Up 30.1 170.6 Up 10:12:22 - 10:42:22 5818
Reno 10:27:17 -27.7 Dark Up 30.6 171.8 Up 10:12:17 - 10:42:17 5815
Carson City 10:27:17 -28.0 Dark Up 31.0 171.8 Up 10:12:17 - 10:42:17 5795
Yerington 10:27:13 -27.8 Dark Up 31.2 172.4 Up 10:12:13 - 10:42:13 5794
Gardnerville 10:27:16 -28.1 Dark Up 31.2 171.8 Up 10:12:16 - 10:42:16 5781
Hawthorne 10:27:10 -27.8 Dark Up 31.8 173.0 Up 10:12:10 - 10:42:10 5776
Tonopah 10:27:02 -27.4 Dark Up 32.3 174.5 Up 10:12:02 - 10:42:02 5772
Lee Vining 10:27:14 -28.5 Dark Up 32.3 172.4 Up 10:12:14 - 10:42:14 5734
Bishop 10:27:08 -28.6 Dark Up 32.9 173.1 Up 10:12:08 - 10:42:08 5710
Beatty 10:26:59 -28.0 Dark Up 33.5 174.9 Up 10:11:59 - 10:41:59 5709
Indian Springs 10:26:53 -27.6 Dark Up 33.9 176.1 Up 10:11:53 - 10:41:53 5707
Henderson 10:26:49 -27.6 Dark Up 34.5 176.8 Up 10:11:49 - 10:41:49 5685
Lone Pine 10:27:06 -28.9 Dark Up 33.7 173.4 Up 10:12:06 - 10:42:06 5669
Patrick 10:26:42 -27.3 Dark Up 35.2 178.0 Up 10:11:42 - 10:41:42 5663
DCO 10:26:37 -27.1 Dark Up 35.5 178.8 Up 10:11:37 - 10:41:37 5655
Searchlight/Boulder City 10:26:49 -27.9 Dark Up 35.1 176.9 Up 10:11:49 - 10:41:49 5650
Kingman/Dolan Springs 10:26:43 -27.6 Dark Up 35.4 177.8 Up 10:11:43 - 10:41:43 5646
Laughlin/Bullhead City 10:26:46 -27.9 Dark Up 35.4 177.2 Up 10:11:46 - 10:41:46 5636
Mohave Valley 10:26:46 -28.1 Dark Up 35.7 177.2 Up 10:11:46 - 10:41:46 5619
Lake Havasu City 10:26:44 -28.2 Dark Up 36.1 177.5 Up 10:11:44 - 10:41:44 5597
Parker 10:26:43 -28.4 Dark Up 36.4 177.5 Up 10:11:43 - 10:41:43 5575
CPSLO 10:27:22 -31.3 Dark Up 34.7 170.4 Up 10:12:22 - 10:42:22 5539
Blythe 10:26:45 -28.9 Dark Up 36.9 177.1 Up 10:11:45 - 10:41:45 5535
Idyllwild 10:26:58 -30.1 Dark Up 36.7 174.7 Up 10:11:58 - 10:41:58 5507
Wildwood 10:27:09 -31.0 Dark Up 36.2 172.6 Up 10:12:09 - 10:42:09 5497
Calipatria 10:26:50 -29.8 Dark Up 37.4 176.0 Up 10:11:50 - 10:41:50 5487
Yuma 10:26:45 -29.6 Dark Up 37.8 177.1 Up 10:11:45 - 10:41:45 5472

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 10:26UT)
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 -19:24:25 12.3         5
Positions are for J2000

Event circumstances last updated at 2018/06/11 17:23:45 UT

Marc W. Buie, Southwest Research Institute

RECON