RECON: TNO occultation with 12HW87

Event between 12HW87 and star GA0740:10277827 with event index number of 2156306

Geocentric closest approach at 2022/08/13 07:41:26 UTC

J2000 position of star is 17:40:37.2 -14:14:51
Equinox of date position of star is 17:41:52.9 -14:15:27
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 74 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 34.0 AU from the Sun and 33.5 AU from the Earth.
The TNO is moving 11.5 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 544 seconds.
The 1-sigma cross-track error in the shadow position is 2881 km.
The sky-plane scale is 24270.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 16.1 sec chord
Diameter=75.3 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 12HW87, (2022/08/13 07:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.9 -26:28:49  0.9 20.62  88
35Eta Oph      17:11:40.6 -15:45:05  2.6  7.45  81
55Xi Ser       17:38:53.0 -15:24:39  3.5  1.37  74
PPM 233476     17:43:22.3 -13:56:59  8.3  0.47  73
PPM 233427     17:41:48.6 -14:13:30 10.0  0.04  74
12HW87         17:41:54.3 -14:15:28 16.9        73
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 1.7 sigma about the mid-time.
The median site spacing is 0.0 km RECON observability=0.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:34:09 -24.3 Dark Up 11.9 229.1 Really Low 07:19:09 - 07:49:09 2075
Victoria 07:34:14 -26.1 Dark Up 14.8 226.9 Really Low 07:19:14 - 07:49:14 2007
Peachland 07:34:04 -25.3 Dark Up 12.2 229.8 Really Low 07:19:04 - 07:49:04 1986
Kelowna 07:34:04 -25.2 Dark Up 12.0 230.0 Really Low 07:19:04 - 07:49:04 1985
Summerland 07:34:04 -25.4 Dark Up 12.3 229.9 Really Low 07:19:04 - 07:49:04 1971
Penticton 07:34:02 -25.5 Dark Up 12.3 230.0 Really Low 07:19:02 - 07:49:02 1963
Oliver 07:34:01 -25.9 Dark Up 12.5 230.0 Really Low 07:19:01 - 07:49:01 1935
Anarchist Mountain Observatory 07:34:01 -26.0 Dark Up 12.5 230.2 Really Low 07:19:01 - 07:49:01 1916
Tonasket 07:33:59 -26.3 Dark Up 12.8 230.2 Really Low 07:18:59 - 07:48:59 1894
Okanogan 07:33:59 -26.7 Dark Up 13.1 230.1 Really Low 07:18:59 - 07:48:59 1872
Brewster 07:34:00 -26.9 Dark Up 13.3 230.0 Really Low 07:19:00 - 07:49:00 1857
Manson/Chelan 07:33:59 -27.1 Dark Up 13.7 229.7 Really Low 07:18:59 - 07:48:59 1852
Wenatchee 07:33:59 -27.5 Dark Up 14.0 229.7 Really Low 07:18:59 - 07:48:59 1820
Ellensburg 07:33:59 -27.9 Dark Up 14.4 229.6 Really Low 07:18:59 - 07:48:59 1794
Sleaford 07:33:38 -23.1 Dark Up 3.8 240.9 Really Low 07:18:38 - 07:48:38 1778
Yakima 07:33:57 -28.3 Dark Up 14.7 229.6 Really Low 07:18:57 - 07:48:57 1762
Toppenish/White Swan 07:33:57 -28.5 Dark Up 14.8 229.8 Really Low 07:18:57 - 07:48:57 1739
Goldendale 07:33:57 -29.0 Dark Up 15.3 229.6 Really Low 07:18:57 - 07:48:57 1709
The Dalles 07:33:58 -29.2 Dark Up 15.7 229.3 Really Low 07:18:58 - 07:48:58 1703
Maupin 07:33:56 -29.7 Dark Up 15.9 229.5 Really Low 07:18:56 - 07:48:56 1665
PNWRO 07:33:50 -29.1 Dark Up 14.2 231.1 Really Low 07:18:50 - 07:48:50 1659
Sisters 07:33:56 -30.5 Dark Up 16.7 229.3 Really Low 07:18:56 - 07:48:56 1610
Bend 07:33:53 -30.7 Dark Up 16.8 229.5 Really Low 07:18:53 - 07:48:53 1582
Oregon Observatory 07:33:55 -30.9 Dark Up 16.9 229.5 Really Low 07:18:55 - 07:48:55 1572
North Lake 07:33:51 -31.6 Dark Up 17.1 230.1 Really Low 07:18:51 - 07:48:51 1500
Chiloquin 07:33:53 -32.1 Dark Up 18.0 229.4 Really Low 07:18:53 - 07:48:53 1477
Klamath Falls 07:33:52 -32.5 Dark Up 18.2 229.6 Really Low 07:18:52 - 07:48:52 1446
Lakeview 07:33:46 -32.7 Dark Up 17.4 230.7 Really Low 07:18:46 - 07:48:46 1391
Fall River/Burney 07:33:48 -33.7 Dark Up 18.8 230.2 Really Low 07:18:48 - 07:48:48 1332
Cedarville 07:33:44 -33.4 Dark Up 17.7 231.0 Really Low 07:18:44 - 07:48:44 1329
Susanville 07:33:43 -34.4 Dark Up 18.7 230.9 Really Low 07:18:43 - 07:48:43 1251
Greenville 07:33:44 -34.6 Dark Up 19.1 230.8 Really Low 07:18:44 - 07:48:44 1238
Gimple 07:33:44 -34.6 Dark Up 19.0 230.8 Really Low 07:18:44 - 07:48:44 1235
Quincy 07:33:44 -34.8 Dark Up 19.2 230.8 Really Low 07:18:44 - 07:48:44 1220
Portola 07:33:43 -35.0 Dark Up 19.0 231.2 Really Low 07:18:43 - 07:48:43 1192
Reno 07:33:40 -35.4 Dark Up 18.8 231.8 Really Low 07:18:40 - 07:48:40 1145
Carson City 07:33:37 -35.7 Dark Up 19.0 231.9 Really Low 07:18:37 - 07:48:37 1113
Gardnerville 07:33:38 -36.0 Dark Up 19.1 232.0 Really Low 07:18:38 - 07:48:38 1089
Yerington 07:33:36 -36.0 Dark Up 18.7 232.5 Really Low 07:18:36 - 07:48:36 1072
Hawthorne 07:33:32 -36.5 Dark Up 18.7 233.0 Really Low 07:18:32 - 07:48:32 1011
Lee Vining 07:33:33 -37.0 Dark Up 19.3 232.8 Really Low 07:18:33 - 07:48:33 980
Tonopah 07:33:27 -37.1 Dark Up 18.1 234.2 Really Low 07:18:27 - 07:48:27 917
Bishop 07:33:29 -37.7 Dark Up 19.3 233.5 Really Low 07:18:29 - 07:48:29 899
Beatty 07:33:23 -38.3 Dark Up 18.5 234.9 Really Low 07:18:23 - 07:48:23 795
Indian Springs 07:33:19 -38.7 Dark Up 18.0 235.8 Really Low 07:18:19 - 07:48:19 725
Dunrhomin 07:32:55 -34.7 Dark Up 9.1 242.5 Really Low 07:17:55 - 07:47:55 701
CU-SBO 07:32:55 -35.0 Dark Up 9.3 242.5 Really Low 07:17:55 - 07:47:55 681
Henderson 07:33:15 -39.2 Dark Up 17.8 236.4 Really Low 07:18:15 - 07:48:15 649
Wildwood 07:33:26 -40.9 Dark Up 21.3 234.3 Low 07:18:26 - 07:48:26 609
Laughlin/Bullhead City 07:33:13 -40.1 Dark Up 18.0 236.9 Really Low 07:18:13 - 07:48:13 553
Patrick 07:33:10 -39.9 Dark Up 17.4 237.4 Really Low 07:18:10 - 07:48:10 550
Kingman/Dolan Springs 07:33:11 -40.1 Dark Up 17.7 237.3 Really Low 07:18:11 - 07:48:11 536
Mohave Valley 07:33:13 -40.4 Dark Up 18.2 237.0 Really Low 07:18:13 - 07:48:13 527
Idyllwild 07:33:18 -41.4 Dark Up 20.3 235.8 Low 07:18:18 - 07:48:18 502
Lake Havasu City 07:33:11 -40.8 Dark Up 18.2 237.3 Really Low 07:18:11 - 07:48:11 481
Parker 07:33:11 -41.2 Dark Up 18.4 237.4 Really Low 07:18:11 - 07:48:11 446
Calipatria 07:33:14 -42.1 Dark Up 19.8 236.8 Really Low 07:18:14 - 07:48:14 398
Yuma 07:33:10 -42.6 Dark Up 19.4 237.6 Really Low 07:18:10 - 07:48:10 323
George/Scottsdale 07:33:02 -41.6 Dark Up 16.9 239.2 Really Low 07:18:02 - 07:48:02 314

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 12HW87, (2022/08/13 07:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.62  88
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.45  81
55Xi Ser       17:37:35.1 -15:23:56  3.5  1.37  74
PPM 233476     17:42:05.2 -13:56:25  8.3  0.47  73
PPM 233427     17:40:31.4 -14:12:53 10.0  0.04  74
12HW87         17:40:37.2 -14:14:51 16.9        74
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:06:49 UT

Marc W. Buie, Southwest Research Institute

RECON