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 07:55:22 UTC

J2000 position of star is 17:51:26.7 +00:45:24
Equinox of date position of star is 17:52:26.6 +00:45:10
Stellar brightness G=15.8, use SENSEUP=128
Star is 122 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=22.1

[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 106 seconds.
The 1-sigma cross-track error in the shadow position is 2172 km.
The sky-plane scale is 11792.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.6
Diameter=73.1 km assuming a 5% albedo -- 4.9 sec chord
Diameter=29.8 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 12GT41, (2022/08/17 07:55UT)
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     17:57:27.6 +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 23.2 km RECON observability=1.0 and success probability=22.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:48:48 -26.7 Dark Up 21.9 242.9 Low 07:39:27 - 07:58:09 -40
Summerland 07:48:49 -26.9 Dark Up 22.2 242.7 Low 07:39:28 - 07:58:10 -59
Penticton 07:48:49 -27.0 Dark Up 22.2 242.8 Low 07:39:28 - 07:58:10 -70
Okanagan Falls 07:48:49 -27.2 Dark Up 22.3 242.9 Low 07:39:28 - 07:58:10 -87
Oliver 07:48:50 -27.4 Dark Up 22.4 243.0 Low 07:39:29 - 07:58:11 -104
Anarchist Mountain Observatory 07:48:50 -27.5 Dark Up 22.3 243.2 Low 07:39:29 - 07:58:11 -128
Oroville 07:48:50 -27.6 Dark Up 22.4 243.2 Low 07:39:29 - 07:58:11 -132
Tonasket 07:48:50 -27.8 Dark Up 22.5 243.3 Low 07:39:29 - 07:58:11 -155
Okanogan 07:48:51 -28.2 Dark Up 22.7 243.2 Low 07:39:30 - 07:58:12 -183
Brewster 07:48:52 -28.4 Dark Up 23.0 243.2 Low 07:39:31 - 07:58:13 -203
Manson/Chelan 07:48:53 -28.6 Dark Up 23.3 242.9 Low 07:39:32 - 07:58:14 -210
Wenatchee 07:48:54 -29.1 Dark Up 23.6 243.0 Low 07:39:33 - 07:58:15 -250
Ellensburg 07:48:55 -29.5 Dark Up 23.9 243.0 Low 07:39:34 - 07:58:16 -282
Yakima 07:48:56 -29.9 Dark Up 24.1 243.1 Low 07:39:35 - 07:58:17 -321
Toppenish/White Swan 07:48:56 -30.1 Dark Up 24.1 243.3 Low 07:39:35 - 07:58:17 -348
Goldendale 07:48:58 -30.6 Dark Up 24.6 243.2 Low 07:39:37 - 07:58:19 -386
The Dalles 07:48:59 -30.8 Dark Up 25.0 243.0 Low 07:39:38 - 07:58:20 -394
Pasco 07:48:54 -30.3 Dark Up 23.4 244.5 Low 07:39:33 - 07:58:15 -407
Maupin 07:49:00 -31.3 Dark Up 25.1 243.2 Low 07:39:39 - 07:58:21 -438
PNWRO 07:48:54 -30.6 Dark Up 23.4 244.8 Low 07:39:33 - 07:58:15 -439
Madras/Culver 07:49:01 -31.8 Dark Up 25.3 243.4 Low 07:39:40 - 07:58:22 -489
Sisters 07:49:02 -32.1 Dark Up 25.8 243.2 Low 07:39:41 - 07:58:23 -504
Redmond 07:49:01 -32.2 Dark Up 25.5 243.6 Low 07:39:40 - 07:58:22 -522
Bend 07:49:02 -32.4 Dark Up 25.7 243.5 Low 07:39:41 - 07:58:23 -537
Oregon Observatory 07:49:03 -32.5 Dark Up 25.9 243.5 Low 07:39:42 - 07:58:24 -549
La Pine/Gilchrist 07:49:03 -32.7 Dark Up 26.0 243.5 Low 07:39:42 - 07:58:24 -566
North Lake 07:49:03 -33.2 Dark Up 25.8 244.2 Low 07:39:42 - 07:58:24 -632
Chiloquin 07:49:07 -33.8 Dark Up 26.7 243.7 Low 07:39:46 - 07:58:28 -658
Klamath Falls 07:49:07 -34.2 Dark Up 26.8 244.0 Low 07:39:46 - 07:58:28 -694
Paisley 07:49:04 -33.8 Dark Up 25.8 244.8 Low 07:39:43 - 07:58:25 -699
Tulelake 07:49:08 -34.4 Dark Up 26.7 244.3 Low 07:39:47 - 07:58:29 -732
Lakeview 07:49:05 -34.3 Dark Up 25.9 245.2 Low 07:39:44 - 07:58:26 -755
Fall River/Burney 07:49:09 -35.4 Dark Up 27.1 244.8 Low 07:39:48 - 07:58:30 -822
Cedarville 07:49:06 -35.0 Dark Up 26.0 245.6 Low 07:39:45 - 07:58:27 -825
Susanville 07:49:10 -36.0 Dark Up 26.8 245.7 Low 07:39:49 - 07:58:31 -913
Greenville 07:49:11 -36.3 Dark Up 27.1 245.6 Low 07:39:50 - 07:58:32 -927
Gimple 07:49:10 -36.3 Dark Up 27.1 245.7 Low 07:39:49 - 07:58:31 -931
Quincy 07:49:11 -36.5 Dark Up 27.2 245.7 Low 07:39:50 - 07:58:32 -947
Portola 07:49:11 -36.7 Dark Up 26.9 246.2 Low 07:39:50 - 07:58:32 -978
Reno 07:49:10 -37.0 Dark Up 26.6 246.8 Low 07:39:49 - 07:58:31 -1030
Carson City 07:49:12 -37.3 Dark Up 26.7 247.0 Low 07:39:51 - 07:58:33 -1066
Gardnerville 07:49:12 -37.6 Dark Up 26.8 247.1 Low 07:39:51 - 07:58:33 -1091
Yerington 07:49:10 -37.6 Dark Up 26.3 247.6 Low 07:39:49 - 07:58:31 -1110
Hawthorne 07:49:11 -38.0 Dark Up 26.1 248.2 Low 07:39:50 - 07:58:32 -1176
Lee Vining 07:49:14 -38.6 Dark Up 26.7 248.1 Low 07:39:53 - 07:58:35 -1210
Tonopah 07:49:10 -38.5 Dark Up 25.3 249.5 Low 07:39:49 - 07:58:31 -1277
Bishop 07:49:14 -39.2 Dark Up 26.4 248.9 Low 07:39:53 - 07:58:35 -1297
Lone Pine 07:49:15 -40.0 Dark Up 26.4 249.5 Low 07:39:54 - 07:58:36 -1383
CPSLO 07:49:24 -41.1 Dark Up 28.8 248.3 Low 07:40:03 - 07:58:45 -1397
Beatty 07:49:12 -39.7 Dark Up 25.3 250.3 Low 07:39:51 - 07:58:33 -1406
SwRI 07:48:47 -35.7 Dark Up 15.9 257.2 Really Low 07:39:26 - 07:58:08 -1461
Indian Springs 07:49:11 -40.0 Dark Up 24.6 251.2 Low 07:39:50 - 07:58:32 -1479
Henderson 07:49:12 -40.6 Dark Up 24.2 252.0 Low 07:39:51 - 07:58:33 -1557
Wildwood 07:49:24 -42.5 Dark Up 27.6 250.4 Low 07:40:03 - 07:58:45 -1599
Searchlight/Boulder City 07:49:13 -41.1 Dark Up 24.4 252.3 Low 07:39:52 - 07:58:34 -1615
Laughlin/Bullhead City 07:49:14 -41.4 Dark Up 24.2 252.6 Low 07:39:53 - 07:58:35 -1656
Patrick 07:49:12 -41.1 Dark Up 23.6 253.0 Low 07:39:51 - 07:58:33 -1659
Kingman/Dolan Springs 07:49:13 -41.4 Dark Up 23.8 253.0 Low 07:39:52 - 07:58:34 -1673
Mohave Valley 07:49:14 -41.7 Dark Up 24.2 252.8 Low 07:39:53 - 07:58:35 -1683
Idyllwild 07:49:22 -42.9 Dark Up 26.3 251.8 Low 07:40:01 - 07:58:43 -1711
Lake Havasu City 07:49:15 -42.1 Dark Up 24.2 253.1 Low 07:39:54 - 07:58:36 -1731
Parker 07:49:15 -42.4 Dark Up 24.2 253.3 Low 07:39:54 - 07:58:36 -1766
Blythe 07:49:19 -43.0 Dark Up 24.6 253.3 Low 07:39:58 - 07:58:40 -1805
Calipatria 07:49:22 -43.5 Dark Up 25.5 252.9 Low 07:40:01 - 07:58:43 -1816
Yuma 07:49:21 -43.9 Dark Up 24.9 253.7 Low 07:40:00 - 07:58:42 -1891
George/Scottsdale 07:49:14 -42.7 Dark Up 22.4 255.0 Low 07:39:53 - 07:58:35 -1894

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 07:55UT)
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 +04:34:05  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     17:51:30.5 +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 2019/08/03 22:37:06 UT

Marc W. Buie, Southwest Research Institute

RECON