RECON: TNO occultation with 12GT41

Event between 12GT41 and star GA0900:05976270 with event index number of 1583359

Geocentric closest approach at 2022/08/17 07:55:30 UTC

J2000 position of star is 17:51:26.7 +00:45:24
Equinox of date position of star is 17:52:31.3 +00:45:09
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 122 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 16.8 AU from the Sun and 16.3 AU from the Earth.
The TNO is moving 15.0 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 60 seconds.
The 1-sigma cross-track error in the shadow position is 1192 km.
The sky-plane scale is 11792.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=74.5 km assuming a 5% albedo -- 5.0 sec chord
Diameter=30.4 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 12GT41, (2022/08/17 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.9 -26:28:49  0.9 33.62 143
60Bet Oph      17:44:35.5 +04:33:34  2.8  4.30 123
PPM 164858     17:57:27.5 +00:40:08  5.7  1.22 121
PPM 164743     17:53:44.3 +01:18:04  7.5  0.62 122
PPM 164704     17:52:39.8 +00:37:13  9.5  0.13 122
12GT41         17:52:35.9 +00:45:08 15.8       122
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 26.5 km RECON observability=1.0 and success probability=41.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 07:48:58 -26.3 Dark Up 21.7 242.8 Low 07:43:28 - 07:54:29 1234
Victoria 07:49:07 -27.8 Dark Up 24.9 239.8 Low 07:43:36 - 07:54:37 1212
Kelowna 07:48:58 -26.7 Dark Up 22.0 242.8 Low 07:43:27 - 07:54:28 1200
Peachland 07:48:59 -26.8 Dark Up 22.2 242.6 Low 07:43:28 - 07:54:29 1199
Summerland 07:48:58 -26.9 Dark Up 22.2 242.7 Low 07:43:28 - 07:54:29 1182
Penticton 07:48:59 -27.0 Dark Up 22.2 242.9 Low 07:43:28 - 07:54:29 1171
Oliver 07:48:59 -27.4 Dark Up 22.3 243.0 Low 07:43:29 - 07:54:30 1137
Anarchist Mountain Observatory 07:48:59 -27.5 Dark Up 22.3 243.2 Low 07:43:29 - 07:54:30 1113
Tonasket 07:49:00 -27.8 Dark Up 22.5 243.3 Low 07:43:29 - 07:54:30 1086
Okanogan 07:49:01 -28.2 Dark Up 22.7 243.3 Low 07:43:30 - 07:54:31 1058
Brewster 07:49:01 -28.4 Dark Up 23.0 243.2 Low 07:43:31 - 07:54:32 1038
Manson/Chelan 07:49:02 -28.6 Dark Up 23.3 243.0 Low 07:43:32 - 07:54:33 1031
Wenatchee 07:49:03 -29.1 Dark Up 23.6 243.0 Low 07:43:33 - 07:54:34 991
Ellensburg 07:49:05 -29.5 Dark Up 23.9 243.0 Low 07:43:34 - 07:54:35 959
Yakima 07:49:05 -29.9 Dark Up 24.1 243.1 Low 07:43:35 - 07:54:36 920
Toppenish/White Swan 07:49:05 -30.1 Dark Up 24.1 243.4 Low 07:43:35 - 07:54:36 893
Goldendale 07:49:07 -30.6 Dark Up 24.6 243.2 Low 07:43:37 - 07:54:38 855
The Dalles 07:49:08 -30.8 Dark Up 24.9 243.0 Low 07:43:38 - 07:54:39 847
Pasco 07:49:04 -30.3 Dark Up 23.4 244.5 Low 07:43:33 - 07:54:34 834
Maupin 07:49:09 -31.3 Dark Up 25.1 243.3 Low 07:43:39 - 07:54:40 802
PNWRO 07:49:03 -30.6 Dark Up 23.3 244.8 Low 07:43:33 - 07:54:34 802
Sisters 07:49:12 -32.1 Dark Up 25.8 243.2 Low 07:43:41 - 07:54:42 737
Redmond 07:49:11 -32.2 Dark Up 25.5 243.6 Low 07:43:40 - 07:54:41 719
Bend 07:49:12 -32.4 Dark Up 25.7 243.6 Low 07:43:41 - 07:54:42 704
Oregon Observatory 07:49:12 -32.5 Dark Up 25.9 243.5 Low 07:43:42 - 07:54:43 692
La Pine/Gilchrist 07:49:12 -32.7 Dark Up 26.0 243.6 Low 07:43:42 - 07:54:43 675
North Lake 07:49:12 -33.2 Dark Up 25.8 244.3 Low 07:43:42 - 07:54:43 609
Chiloquin 07:49:16 -33.8 Dark Up 26.7 243.8 Low 07:43:46 - 07:54:47 583
Klamath Falls 07:49:17 -34.2 Dark Up 26.8 244.0 Low 07:43:46 - 07:54:47 547
Paisley 07:49:13 -33.8 Dark Up 25.8 244.8 Low 07:43:43 - 07:54:44 542
Lakeview 07:49:14 -34.3 Dark Up 25.9 245.2 Low 07:43:44 - 07:54:45 485
Fall River/Burney 07:49:19 -35.4 Dark Up 27.0 244.9 Low 07:43:48 - 07:54:49 418
Cedarville 07:49:15 -35.0 Dark Up 26.0 245.6 Low 07:43:45 - 07:54:46 415
Susanville 07:49:19 -36.0 Dark Up 26.8 245.8 Low 07:43:49 - 07:54:50 327
Greenville 07:49:20 -36.3 Dark Up 27.1 245.7 Low 07:43:50 - 07:54:51 313
Gimple 07:49:20 -36.3 Dark Up 27.0 245.7 Low 07:43:50 - 07:54:51 310
Quincy 07:49:21 -36.5 Dark Up 27.2 245.8 Low 07:43:50 - 07:54:51 294
Portola 07:49:20 -36.7 Dark Up 26.9 246.2 Low 07:43:50 - 07:54:51 262
Reno 07:49:20 -37.0 Dark Up 26.6 246.8 Low 07:43:49 - 07:54:50 210
Carson City 07:49:21 -37.3 Dark Up 26.7 247.0 Low 07:43:50 - 07:54:51 175
Gardnerville 07:49:21 -37.6 Dark Up 26.7 247.2 Low 07:43:51 - 07:54:52 149
Yerington 07:49:20 -37.6 Dark Up 26.3 247.6 Low 07:43:50 - 07:54:51 130
Hawthorne 07:49:20 -38.0 Dark Up 26.1 248.2 Low 07:43:50 - 07:54:51 64
Lee Vining 07:49:23 -38.6 Dark Up 26.6 248.1 Low 07:43:52 - 07:54:53 30
Tonopah 07:49:19 -38.5 Dark Up 25.2 249.5 Low 07:43:48 - 07:54:49 -37
Bishop 07:49:23 -39.2 Dark Up 26.3 248.9 Low 07:43:53 - 07:54:54 -57
CPSLO 07:49:34 -41.1 Dark Up 28.7 248.3 Low 07:44:03 - 07:55:04 -156
Beatty 07:49:22 -39.7 Dark Up 25.3 250.4 Low 07:43:51 - 07:54:52 -166
Dunrhomin 07:48:56 -35.4 Dark Up 15.7 257.3 Really Low 07:43:26 - 07:54:27 -197
Indian Springs 07:49:21 -40.0 Dark Up 24.6 251.3 Low 07:43:50 - 07:54:51 -239
Henderson 07:49:20 -40.6 Dark Up 24.2 252.0 Low 07:43:50 - 07:54:51 -316
Wildwood 07:49:33 -42.5 Dark Up 27.6 250.4 Low 07:44:03 - 07:55:04 -359
Laughlin/Bullhead City 07:49:22 -41.4 Dark Up 24.1 252.7 Low 07:43:52 - 07:54:53 -416
Patrick 07:49:21 -41.1 Dark Up 23.5 253.0 Low 07:43:51 - 07:54:52 -418
Kingman/Dolan Springs 07:49:22 -41.4 Dark Up 23.7 253.0 Low 07:43:51 - 07:54:52 -433
Mohave Valley 07:49:24 -41.7 Dark Up 24.2 252.8 Low 07:43:53 - 07:54:54 -442
Idyllwild 07:49:31 -42.9 Dark Up 26.2 251.9 Low 07:44:00 - 07:55:01 -470
Lake Havasu City 07:49:24 -42.1 Dark Up 24.1 253.1 Low 07:43:54 - 07:54:55 -490
Parker 07:49:26 -42.4 Dark Up 24.2 253.3 Low 07:43:55 - 07:54:56 -525
Blythe 07:49:28 -43.0 Dark Up 24.6 253.3 Low 07:43:57 - 07:54:58 -564
Calipatria 07:49:31 -43.5 Dark Up 25.5 252.9 Low 07:44:00 - 07:55:01 -575
Yuma 07:49:31 -43.9 Dark Up 24.9 253.7 Low 07:44:00 - 07:55:01 -651
George/Scottsdale 07:49:23 -42.7 Dark Up 22.4 255.1 Low 07:43:52 - 07:54:53 -654

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 12GT41, (2022/08/17 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.62 143
60Bet Oph      17:43:28.3 +04:34:06  2.8  4.30 123
PPM 164858     17:56:18.3 +00:40:14  5.7  1.22 121
PPM 164743     17:52:35.4 +01:18:18  7.5  0.62 122
PPM 164704     17:51:30.6 +00:37:28  9.5  0.13 122
12GT41         17:51:26.7 +00:45:24 15.8       122
Positions are for J2000

Event circumstances last updated at 2021/02/09 21:07:51 UT

Marc W. Buie, Southwest Research Institute

RECON