RECON: TNO occultation with 05GF187

Event between 05GF187 and star UC4-354-080396 with event index number of 195540

Geocentric closest approach at 2019/06/29 07:49:56 UTC

J2000 position of star is 16:51:50.9 -19:13:08
Equinox of date position of star is 16:52:54.1 -19:14:52
Stellar brightness R=16.3, use SENSEUP=128
Star is 159 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 29.5 AU from the Sun and 28.5 AU from the Earth.
The TNO is moving 20.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 299 seconds.
The 1-sigma cross-track error in the shadow position is 2303 km.
The sky-plane scale is 20704.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=157.8 km assuming a 5% albedo -- 7.6 sec chord
Diameter=64.4 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05GF187, (2019/06/29 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9  8.87 161
35Eta Oph      17:11:29.8 -15:44:52  2.6  5.63 155
PPM 266088     16:54:34.4 -20:26:48  5.7  1.25 158
PPM 232233     16:52:18.9 -19:13:07  8.0  0.16 159
PPM 232251     16:53:21.6 -19:11:38  8.9  0.10 159
05GF187        16:52:59.6 -19:15:01 16.3       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 3.0 sigma about the mid-time.
The median site spacing is 13.0 km RECON observability=0.9 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 07:49:02 -17.8 AT Down 19.1 202.0 Really Low 07:34:02 - 08:04:02 9537
Tonasket 07:49:01 -18.0 Dark Down 19.3 202.0 Really Low 07:34:01 - 08:04:01 9527
Okanogan 07:49:01 -18.3 Dark Down 19.7 201.9 Really Low 07:34:01 - 08:04:01 9514
Brewster 07:49:02 -18.6 Dark Down 20.0 201.7 Really Low 07:34:02 - 08:04:02 9503
Manson/Chelan 07:49:02 -18.8 Dark Down 20.2 201.4 Low 07:34:02 - 08:04:02 9496
Entiat 07:49:02 -19.0 Dark Down 20.5 201.4 Low 07:34:02 - 08:04:02 9487
Wenatchee 07:49:03 -19.3 Dark Down 20.7 201.3 Low 07:34:03 - 08:04:03 9476
Ellensburg 07:49:03 -19.7 Dark Down 21.2 201.1 Low 07:34:03 - 08:04:03 9459
Yakima 07:49:01 -20.1 Dark Down 21.6 201.2 Low 07:34:01 - 08:04:01 9440
Toppenish/White Swan 07:49:01 -20.3 Dark Down 21.7 201.4 Low 07:34:01 - 08:04:01 9430
Pasco 07:48:57 -20.5 Dark Down 21.5 202.6 Low 07:33:57 - 08:03:57 9419
PNWRO 07:48:56 -20.7 Dark Down 21.7 202.9 Low 07:33:56 - 08:03:56 9407
Goldendale 07:49:02 -20.8 Dark Down 22.3 201.0 Low 07:34:02 - 08:04:02 9406
George/Umatilla 07:48:56 -20.8 Dark Down 21.9 202.4 Low 07:33:56 - 08:03:56 9405
The Dalles 07:49:03 -21.0 Dark Down 22.6 200.7 Low 07:34:03 - 08:04:03 9397
Maupin 07:49:02 -21.5 Dark Down 23.0 200.9 Low 07:34:02 - 08:04:02 9377
Madras/Culver 07:49:01 -22.0 Dark Down 23.5 200.9 Low 07:34:01 - 08:04:01 9351
Sisters 07:49:02 -22.3 Dark Down 23.9 200.5 Low 07:34:02 - 08:04:02 9336
Redmond 07:49:01 -22.4 Dark Down 23.9 200.9 Low 07:34:01 - 08:04:01 9334
Bend 07:49:01 -22.6 Dark Down 24.1 200.8 Low 07:34:01 - 08:04:01 9324
Oregon Observatory 07:49:01 -22.7 Dark Down 24.3 200.7 Low 07:34:01 - 08:04:01 9315
La Pine/Gilchrist 07:49:01 -22.9 Dark Down 24.5 200.7 Low 07:34:01 - 08:04:01 9305
North Lake 07:48:58 -23.4 Dark Down 24.8 201.3 Low 07:33:58 - 08:03:58 9281
Paisley 07:48:55 -24.0 Dark Down 25.2 201.8 Low 07:33:55 - 08:03:55 9252
Chiloquin 07:49:01 -24.0 Dark Down 25.6 200.5 Low 07:34:01 - 08:04:01 9250
Klamath Falls 07:49:00 -24.4 Dark Down 25.9 200.6 Low 07:34:00 - 08:04:00 9232
Lakeview 07:48:55 -24.5 Dark Down 25.6 202.1 Low 07:33:55 - 08:03:55 9225
Tulelake 07:48:58 -24.6 Dark Down 26.1 201.0 Low 07:33:58 - 08:03:58 9217
Cedarville 07:48:53 -25.1 Dark Down 26.2 202.4 Low 07:33:53 - 08:03:53 9189
Fall River/Burney 07:48:57 -25.6 Dark Down 26.9 201.2 Low 07:33:57 - 08:03:57 9167
Susanville 07:48:53 -26.2 Dark Down 27.3 202.1 Low 07:33:53 - 08:03:53 9130
Greenville 07:48:53 -26.5 Dark Down 27.7 201.8 Low 07:33:53 - 08:03:53 9116
Gimple 07:48:54 -26.5 Dark Down 27.6 201.9 Low 07:33:54 - 08:03:54 9115
Quincy 07:48:54 -26.7 Dark Down 27.9 201.9 Low 07:33:54 - 08:03:54 9104
Portola 07:48:52 -26.8 Dark Down 27.8 202.4 Low 07:33:52 - 08:03:52 9095
Reno 07:48:49 -27.1 Dark Down 27.9 203.1 Low 07:33:49 - 08:03:49 9077
Carson City 07:48:48 -27.5 Dark Down 28.2 203.2 Low 07:33:48 - 08:03:48 9057
Yerington 07:48:46 -27.7 Dark Down 28.2 203.9 Low 07:33:46 - 08:03:46 9043
Gardnerville 07:48:47 -27.7 Dark Down 28.4 203.3 Low 07:33:47 - 08:03:47 9042
Hawthorne 07:48:42 -28.2 Dark Down 28.5 204.5 Low 07:33:42 - 08:03:42 9013
Niwot 07:47:58 -25.8 Dark Down 21.9 216.7 Low 07:32:58 - 08:02:58 8995
Lee Vining 07:48:44 -28.7 Dark Down 29.1 204.1 Low 07:33:44 - 08:03:44 8982
Tonopah 07:48:37 -28.7 Dark Down 28.4 206.0 Low 07:33:37 - 08:03:37 8977
Bishop 07:48:40 -29.4 Dark Down 29.4 205.0 Low 07:33:40 - 08:03:40 8942
Beatty 07:48:33 -29.9 Dark Down 29.3 206.7 Low 07:33:33 - 08:03:33 8905
Lone Pine 07:48:38 -30.1 Dark Down 30.0 205.5 Up 07:33:38 - 08:03:38 8894
Indian Springs 07:48:28 -30.2 Dark Down 29.2 207.9 Low 07:33:28 - 08:03:28 8877
Henderson 07:48:24 -30.7 Dark Down 29.4 208.7 Low 07:33:24 - 08:03:24 8839
CPSLO 07:48:47 -31.3 Dark Down 32.1 203.2 Up 07:33:47 - 08:03:47 8825
Searchlight/Boulder City 07:48:24 -31.3 Dark Down 29.9 208.9 Low 07:33:24 - 08:03:24 8802
Patrick 07:48:20 -31.3 Dark Down 29.5 209.9 Low 07:33:20 - 08:03:20 8791
Laughlin/Bullhead City 07:48:22 -31.6 Dark Down 30.0 209.3 Up 07:33:22 - 08:03:22 8781
Kingman/Dolan Springs 07:48:21 -31.5 Dark Down 29.8 209.8 Low 07:33:21 - 08:03:21 8778
DCO 07:48:17 -31.6 Dark Down 29.5 210.7 Low 07:33:17 - 08:03:17 8766
Mohave Valley 07:48:22 -31.8 Dark Down 30.2 209.4 Up 07:33:22 - 08:03:22 8763
Wildwood 07:48:36 -32.6 Dark Down 32.5 205.6 Up 07:33:36 - 08:03:36 8736
Lake Havasu City 07:48:20 -32.2 Dark Down 30.5 209.7 Up 07:33:20 - 08:03:20 8735
Parker 07:48:20 -32.6 Dark Down 30.8 209.9 Up 07:33:20 - 08:03:20 8712
Idyllwild 07:48:28 -33.0 Dark Down 32.1 207.6 Up 07:33:28 - 08:03:28 8701
Blythe 07:48:20 -33.1 Dark Down 31.4 209.7 Up 07:33:20 - 08:03:20 8679
Calipatria 07:48:23 -33.6 Dark Down 32.2 209.0 Up 07:33:23 - 08:03:23 8653
Yuma 07:48:19 -34.1 Dark Down 32.2 210.0 Up 07:33:19 - 08:03:19 8617

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, (2019/06/29 07:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.87 161
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.63 155
PPM 266088     16:53:25.2 -20:24:57  5.7  1.25 158
PPM 232233     16:51:10.3 -19:11:12  8.0  0.16 159
PPM 232251     16:52:13.0 -19:09:45  8.9  0.10 159
05GF187        16:51:50.9 -19:13:08 16.3       159
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:05:27 UT

Marc W. Buie, Southwest Research Institute

RECON