RECON: TNO occultation with 10WG9

Event between 10WG9 and star GA1100:01752289 with event index number of 232328

Geocentric closest approach at 2019/12/24 02:37:06 UTC

J2000 position of star is 06:06:38.1 +21:55:49
Equinox of date position of star is 06:07:48.3 +21:55:37
Stellar brightness G=16.2, use SENSEUP=128
Star is 154 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 24.4 AU from the Sun and 23.4 AU from the Earth.
The TNO is moving 28.7 km/sec on the sky relative to the star, or, 6.1 arcsec/hr.
The 1-sigma error in the time of the event is 45 seconds.
The 1-sigma cross-track error in the shadow position is 2699 km.
The sky-plane scale is 16950.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=134.9 km assuming a 5% albedo -- 4.7 sec chord
Diameter=55.1 km assuming a 30% albedo -- 1.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10WG9, (2019/12/24 02:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.2 +07:24:33  0.4 14.78 154
Alhena         06:38:52.0 +16:22:50  1.9  9.19 147
PPM 095249     06:02:54.0 +22:24:00  6.2  1.24 155
PPM 095431     06:08:51.0 +21:52:10  7.7  0.24 154
PPM 095400     06:07:55.3 +21:53:02  9.2  0.05 154
10WG9          06:07:50.3 +21:55:37 16.2       154
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 5.0 sigma about the mid-time.
The median site spacing is 21.0 km RECON observability=1.0 and success probability=3.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 02:39:58 -24.5 Dark Down 23.7 83.6 Low 02:35:41 - 02:44:15 8016
Summerland 02:39:59 -24.3 Dark Down 23.5 83.3 Low 02:35:42 - 02:44:16 7995
Penticton 02:39:59 -24.4 Dark Down 23.6 83.3 Low 02:35:42 - 02:44:16 7987
Okanagan Falls 02:39:59 -24.3 Dark Down 23.6 83.2 Low 02:35:42 - 02:44:16 7970
Oliver 02:40:00 -24.3 Dark Down 23.6 83.2 Low 02:35:43 - 02:44:17 7955
Anarchist Mountain Observatory 02:40:00 -24.4 Dark Down 23.7 83.3 Low 02:35:43 - 02:44:17 7935
Oroville 02:40:01 -24.4 Dark Down 23.6 83.2 Low 02:35:44 - 02:44:18 7930
Tonasket 02:40:01 -24.3 Dark Down 23.6 83.1 Low 02:35:44 - 02:44:18 7908
Okanogan 02:40:01 -24.2 Dark Down 23.4 82.8 Low 02:35:44 - 02:44:18 7881
Brewster 02:40:02 -24.0 Dark Down 23.3 82.6 Low 02:35:45 - 02:44:19 7861
Manson/Chelan 02:40:03 -23.7 Dark Down 23.0 82.2 Low 02:35:46 - 02:44:20 7850
Entiat 02:40:03 -23.6 Dark Down 22.9 82.1 Low 02:35:46 - 02:44:20 7831
Wenatchee 02:40:04 -23.5 Dark Down 22.8 81.9 Low 02:35:47 - 02:44:21 7810
Ellensburg 02:40:05 -23.3 Dark Down 22.6 81.6 Low 02:35:48 - 02:44:22 7777
Yakima 02:40:06 -23.2 Dark Down 22.6 81.4 Low 02:35:49 - 02:44:23 7740
Toppenish/White Swan 02:40:06 -23.3 Dark Down 22.6 81.4 Low 02:35:49 - 02:44:23 7716
Goldendale 02:40:08 -22.9 Dark Down 22.3 80.9 Low 02:35:51 - 02:44:25 7675
Pasco 02:40:05 -24.2 Dark Down 23.5 82.3 Low 02:35:48 - 02:44:22 7674
The Dalles 02:40:09 -22.6 Dark Down 22.0 80.6 Low 02:35:52 - 02:44:26 7663
George/Umatilla 02:40:06 -24.0 Dark Down 23.3 82.0 Low 02:35:49 - 02:44:23 7648
PNWRO 02:40:06 -24.3 Dark Down 23.6 82.3 Low 02:35:49 - 02:44:23 7645
Maupin 02:40:09 -22.6 Dark Down 22.0 80.5 Low 02:35:52 - 02:44:26 7621
Madras/Culver 02:40:11 -22.5 Dark Down 21.9 80.3 Low 02:35:54 - 02:44:28 7571
Sisters 02:40:11 -22.1 Dark Down 21.5 79.8 Low 02:35:54 - 02:44:28 7551
Redmond 02:40:11 -22.4 Dark Down 21.8 80.1 Low 02:35:54 - 02:44:28 7538
Bend 02:40:11 -22.3 Dark Down 21.6 79.9 Low 02:35:54 - 02:44:28 7521
Oregon Observatory 02:40:12 -22.1 Dark Down 21.5 79.8 Low 02:35:55 - 02:44:29 7508
La Pine/Gilchrist 02:40:12 -22.1 Dark Down 21.4 79.6 Low 02:35:55 - 02:44:29 7491
North Lake 02:40:13 -22.4 Dark Down 21.8 79.9 Low 02:35:56 - 02:44:30 7434
Chiloquin 02:40:15 -21.6 Dark Down 21.0 79.0 Low 02:35:58 - 02:44:32 7394
Paisley 02:40:14 -22.5 Dark Down 22.0 79.9 Low 02:35:57 - 02:44:31 7371
Klamath Falls 02:40:15 -21.6 Dark Down 21.0 78.9 Low 02:35:58 - 02:44:32 7359
Tulelake 02:40:15 -21.7 Dark Down 21.2 79.0 Low 02:35:58 - 02:44:32 7325
Lakeview 02:40:14 -22.6 Dark Down 22.0 79.8 Low 02:35:57 - 02:44:31 7318
Cedarville 02:40:16 -22.6 Dark Down 22.0 79.6 Low 02:35:59 - 02:44:33 7249
Fall River/Burney 02:40:17 -21.6 Dark Down 21.0 78.7 Low 02:36:00 - 02:44:34 7235
Susanville 02:40:19 -22.0 Dark Down 21.5 78.9 Low 02:36:02 - 02:44:36 7154
Greenville 02:40:18 -21.7 Dark Down 21.2 78.6 Low 02:36:01 - 02:44:35 7135
Gimple 02:40:18 -21.8 Dark Down 21.3 78.7 Low 02:36:01 - 02:44:35 7132
Quincy 02:40:19 -21.7 Dark Down 21.2 78.6 Low 02:36:02 - 02:44:36 7115
Portola 02:40:18 -22.0 Dark Down 21.5 78.8 Low 02:36:01 - 02:44:35 7090
Reno 02:40:19 -22.4 Dark Down 21.9 79.1 Low 02:36:02 - 02:44:36 7046
Carson City 02:40:19 -22.4 Dark Down 21.9 78.9 Low 02:36:02 - 02:44:36 7010
Gardnerville 02:40:20 -22.4 Dark Down 21.9 78.9 Low 02:36:03 - 02:44:37 6985
Yerington 02:40:19 -22.8 Dark Down 22.3 79.2 Low 02:36:02 - 02:44:36 6974
Hawthorne 02:40:19 -23.1 Dark Down 22.7 79.3 Low 02:36:02 - 02:44:36 6913
Lee Vining 02:40:20 -22.6 Dark Down 22.2 78.8 Low 02:36:03 - 02:44:37 6870
Tonopah 02:40:19 -24.1 Dark Down 23.7 79.9 Low 02:36:02 - 02:44:36 6829
Bishop 02:40:21 -23.1 Dark Down 22.6 79.0 Low 02:36:04 - 02:44:38 6791
Niwot 02:40:01 -33.6 Dark Down 33.1 88.1 Up 02:35:44 - 02:44:18 6763
SwRI 02:40:01 -33.5 Dark Down 33.0 87.9 Up 02:35:44 - 02:44:18 6755
Lone Pine 02:40:22 -23.1 Dark Down 22.7 78.9 Low 02:36:05 - 02:44:39 6705
Beatty 02:40:20 -24.2 Dark Down 23.8 79.7 Low 02:36:03 - 02:44:37 6701
CPSLO 02:40:26 -20.8 Dark Down 20.4 77.0 Low 02:36:09 - 02:44:43 6647
Indian Springs 02:40:19 -25.0 Dark Down 24.6 80.1 Low 02:36:02 - 02:44:36 6639
Henderson 02:40:19 -25.4 Dark Down 25.1 80.2 Low 02:36:02 - 02:44:36 6567
Searchlight/Boulder City 02:40:20 -25.4 Dark Down 25.0 80.0 Low 02:36:03 - 02:44:37 6506
Patrick 02:40:19 -26.2 Dark Down 25.9 80.5 Low 02:36:02 - 02:44:36 6474
Laughlin/Bullhead City 02:40:20 -25.6 Dark Down 25.3 80.1 Low 02:36:03 - 02:44:37 6467
Wildwood 02:40:26 -22.1 Dark Down 21.8 77.6 Low 02:36:09 - 02:44:43 6466
Kingman/Dolan Springs 02:40:19 -26.0 Dark Down 25.7 80.3 Low 02:36:02 - 02:44:36 6456
Mohave Valley 02:40:20 -25.6 Dark Down 25.2 79.9 Low 02:36:03 - 02:44:37 6439
DCO 02:40:18 -26.7 Dark Down 26.4 80.7 Low 02:36:01 - 02:44:35 6424
Lake Havasu City 02:40:21 -25.7 Dark Down 25.3 79.9 Low 02:36:04 - 02:44:38 6391
Idyllwild 02:40:24 -23.6 Dark Down 23.3 78.4 Low 02:36:07 - 02:44:41 6376
Parker 02:40:21 -25.6 Dark Down 25.3 79.7 Low 02:36:04 - 02:44:38 6354
Blythe 02:40:22 -25.3 Dark Down 25.0 79.3 Low 02:36:05 - 02:44:39 6307
Calipatria 02:40:23 -24.4 Dark Down 24.1 78.7 Low 02:36:06 - 02:44:40 6281
Yuma 02:40:23 -25.0 Dark Down 24.8 78.9 Low 02:36:06 - 02:44:40 6213

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, (2019/12/24 02:37UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.78 154
Alhena         06:37:42.8 +16:23:57  1.9  9.19 147
PPM 095249     06:01:41.6 +22:24:04  6.2  1.24 155
PPM 095431     06:07:38.9 +21:52:24  7.7  0.24 154
PPM 095400     06:06:43.2 +21:53:15  9.2  0.05 154
10WG9          06:06:38.1 +21:55:49 16.2       154
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:03:46 UT

Marc W. Buie, Southwest Research Institute

RECON