RECON: TNO occultation with 10WG9

Event between 10WG9 and star UC4-548-020241 with event index number of 183767

Geocentric closest approach at 2019/03/15 06:48:26 UTC

J2000 position of star is 05:52:37.0 +19:27:09
Equinox of date position of star is 05:53:38.7 +19:27:20
Stellar brightness R=12.3, use SENSEUP=16
Star is 7 degrees from the moon. Moon is 59% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 23.8 AU from the Sun and 23.7 AU from the Earth.
The TNO is moving 8.6 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 1227 seconds.
The 1-sigma cross-track error in the shadow position is 3212 km.
The sky-plane scale is 17224.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=146.6 km assuming a 5% albedo -- 17.0 sec chord
Diameter=59.8 km assuming a 30% albedo -- 7.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10WG9, (2019/03/15 06:48UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:12.7 +07:24:33  0.4 12.06  16
Alnath         05:27:30.4 +28:37:19  1.6 10.95  14
PPM 121513     05:53:31.7 +19:52:16  6.4  0.42   7
PPM 121502     05:53:00.2 +19:31:29  7.1  0.19   7
10WG9          05:53:45.1 +19:27:21 12.3         7
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 0.7 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=1.0 and success probability=10.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Yuma 06:53:25 -57.0 Dark Up 24.2 278.4 Low 06:38:25 - 07:08:25 965
Blythe 06:53:35 -56.2 Dark Up 24.2 278.0 Low 06:38:35 - 07:08:35 916
Calipatria 06:53:27 -56.3 Dark Up 25.0 277.7 Low 06:38:27 - 07:08:27 916
Parker 06:53:42 -55.8 Dark Up 24.0 277.9 Low 06:38:42 - 07:08:42 895
Lake Havasu City 06:53:47 -55.5 Dark Up 24.1 277.8 Low 06:38:47 - 07:08:47 874
DCO 06:53:58 -55.3 Dark Up 23.2 278.1 Low 06:38:58 - 07:08:58 870
Idyllwild 06:53:30 -55.3 Dark Up 26.0 276.9 Low 06:38:30 - 07:08:30 848
Mohave Valley 06:53:52 -55.0 Dark Up 24.3 277.5 Low 06:38:52 - 07:08:52 845
Kingman/Dolan Springs 06:53:55 -54.9 Dark Up 24.0 277.6 Low 06:38:55 - 07:08:55 842
Patrick 06:53:58 -54.8 Dark Up 23.8 277.6 Low 06:38:58 - 07:08:58 834
Laughlin/Bullhead City 06:53:53 -54.8 Dark Up 24.4 277.4 Low 06:38:53 - 07:08:53 829
Searchlight/Boulder City 06:53:56 -54.4 Dark Up 24.7 277.0 Low 06:38:56 - 07:08:56 803
Henderson 06:54:02 -53.9 Dark Up 24.8 276.8 Low 06:39:02 - 07:09:02 767
Wildwood 06:53:28 -54.2 Dark Up 27.6 275.7 Low 06:38:28 - 07:08:28 766
Indian Springs 06:54:05 -53.2 Dark Up 25.4 276.1 Low 06:39:05 - 07:09:05 717
Niwot 06:55:18 -52.0 Dark Up 17.5 281.0 Really Low 06:40:18 - 07:10:18 698
Beatty 06:54:06 -52.5 Dark Up 26.3 275.4 Low 06:39:06 - 07:09:06 666
Lone Pine 06:53:58 -52.3 Dark Up 27.3 274.8 Low 06:38:58 - 07:08:58 643
CPSLO 06:53:35 -52.3 Dark Up 29.4 274.0 Low 06:38:35 - 07:08:35 627
Bishop 06:54:06 -51.5 Dark Up 27.6 274.2 Low 06:39:06 - 07:09:06 588
Tonopah 06:54:16 -51.3 Dark Up 26.7 274.6 Low 06:39:16 - 07:09:16 583
Lee Vining 06:54:10 -50.7 Dark Up 28.2 273.5 Low 06:39:10 - 07:09:10 530
Hawthorne 06:54:17 -50.4 Dark Up 27.9 273.5 Low 06:39:17 - 07:09:17 510
Yerington 06:54:21 -49.8 Dark Up 28.3 272.9 Low 06:39:21 - 07:09:21 465
Gardnerville 06:54:18 -49.6 Dark Up 28.7 272.6 Low 06:39:18 - 07:09:18 449
Carson City 06:54:21 -49.4 Dark Up 28.8 272.4 Low 06:39:21 - 07:09:21 432
Reno 06:54:25 -49.1 Dark Up 28.8 272.2 Low 06:39:25 - 07:09:25 409
Portola 06:54:25 -48.6 Dark Up 29.3 271.7 Low 06:39:25 - 07:09:25 372
Quincy 06:54:25 -48.3 Dark Up 29.7 271.3 Low 06:39:25 - 07:09:25 347
Gimple 06:54:29 -48.2 Dark Up 29.6 271.3 Low 06:39:29 - 07:09:29 337
Greenville 06:54:28 -48.1 Dark Up 29.7 271.2 Low 06:39:28 - 07:09:28 334
Susanville 06:54:32 -48.0 Dark Up 29.4 271.2 Low 06:39:32 - 07:09:32 327
Cedarville 06:54:45 -47.2 Dark Up 29.1 271.0 Low 06:39:45 - 07:09:45 272
Fall River/Burney 06:54:36 -47.2 Dark Up 30.0 270.4 Up 06:39:36 - 07:09:36 262
Lakeview 06:54:52 -46.6 Dark Up 29.2 270.5 Low 06:39:52 - 07:09:52 224
Tulelake 06:54:46 -46.4 Dark Up 30.0 269.9 Up 06:39:46 - 07:09:46 202
Paisley 06:54:57 -46.1 Dark Up 29.3 270.1 Low 06:39:57 - 07:09:57 185
Klamath Falls 06:54:48 -46.0 Dark Up 30.2 269.5 Up 06:39:48 - 07:09:48 174
Chiloquin 06:54:51 -45.7 Dark Up 30.3 269.3 Up 06:39:51 - 07:09:51 149
North Lake 06:55:01 -45.5 Dark Up 29.6 269.6 Low 06:40:01 - 07:10:01 136
Oregon Observatory 06:55:06 -44.7 Dark Up 29.9 268.8 Low 06:40:06 - 07:10:06 76
Bend 06:55:08 -44.6 Dark Up 29.8 268.8 Low 06:40:08 - 07:10:08 68
Redmond 06:55:11 -44.5 Dark Up 29.7 268.8 Low 06:40:11 - 07:10:11 58
Sisters 06:55:10 -44.3 Dark Up 30.0 268.5 Low 06:40:10 - 07:10:10 43
Madras/Culver 06:55:15 -44.2 Dark Up 29.7 268.7 Low 06:40:15 - 07:10:15 36
George/Umatilla 06:55:33 -43.6 Dark Up 28.3 269.3 Low 06:40:33 - 07:10:33 4
Maupin 06:55:20 -43.7 Dark Up 29.6 268.4 Low 06:40:20 - 07:10:20 3
PNWRO 06:55:35 -43.7 Dark Up 28.0 269.6 Low 06:40:35 - 07:10:35 -6
Pasco 06:55:37 -43.4 Dark Up 28.2 269.3 Low 06:40:37 - 07:10:37 -19
The Dalles 06:55:25 -43.3 Dark Up 29.6 268.1 Low 06:40:25 - 07:10:25 -34
Goldendale 06:55:28 -43.3 Dark Up 29.4 268.2 Low 06:40:28 - 07:10:28 -38
Toppenish/White Swan 06:55:35 -42.9 Dark Up 29.0 268.3 Low 06:40:35 - 07:10:35 -65
Yakima 06:55:37 -42.7 Dark Up 29.1 268.0 Low 06:40:37 - 07:10:37 -85
La Pine/Gilchrist 06:55:05 -44.9 Dark Up 30.0 268.9 Low 06:40:05 - 07:10:05 -87
Ellensburg 06:55:41 -42.3 Dark Up 29.1 267.8 Low 06:40:41 - 07:10:41 -114
Wenatchee 06:55:45 -42.0 Dark Up 28.9 267.8 Low 06:40:45 - 07:10:45 -137
Entiat 06:55:48 -41.8 Dark Up 28.8 267.7 Low 06:40:48 - 07:10:48 -153
Manson/Chelan 06:55:51 -41.6 Dark Up 28.8 267.7 Low 06:40:51 - 07:10:51 -167
Brewster 06:55:53 -41.6 Dark Up 28.5 267.8 Low 06:40:53 - 07:10:53 -172
Okanogan 06:55:57 -41.4 Dark Up 28.4 267.8 Low 06:40:57 - 07:10:57 -186
Tonasket 06:56:00 -41.1 Dark Up 28.2 267.8 Low 06:41:00 - 07:11:00 -207
Oroville 06:56:03 -40.9 Dark Up 28.2 267.7 Low 06:41:03 - 07:11:03 -225

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 10WG9, (2019/03/15 06:48UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.06  16
Alnath         05:26:17.5 +28:36:24  1.6 10.95  14
PPM 121513     05:52:23.4 +19:52:04  6.4  0.42   7
PPM 121502     05:51:52.1 +19:31:17  7.1  0.19   7
10WG9          05:52:37.0 +19:27:09 12.3         7
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:12:28 UT

Marc W. Buie, Southwest Research Institute

RECON