RECON: TNO occultation with 471325

Event between (471325) 11KT19 and star GA1020:03961503 with event index number of 2381361

Geocentric closest approach at 2022/03/25 10:18:37 UTC

J2000 position of star is 15:52:13.0 +13:20:43
Equinox of date position of star is 15:53:14.1 +13:16:53
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 56 degrees from the moon. Moon is 48% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 28.7 AU from the Sun and 28.2 AU from the Earth.
The TNO is moving 28.1 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 41 seconds.
The 1-sigma cross-track error in the shadow position is 1107 km.
The sky-plane scale is 20421.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.5
Diameter=193.2 km assuming a 5% albedo -- 6.9 sec chord
Diameter=78.9 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471325, (2022/03/25 10:19UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:16:40.6 +19:04:04  0.0 23.88  77
Unukalhai      15:45:21.9 +06:21:26  2.6  7.19  53
39 Ser         15:54:14.3 +13:07:43  6.1  0.28  56
PPM 131767     15:53:24.7 +13:20:25  9.1  0.07  56
471325         15:53:15.3 +13:16:48 16.3        56
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 19.7 km RECON observability=1.0 and success probability=31.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Dunrhomin 10:20:08 -29.0 Dark Up 62.7 168.7 Up 10:16:11 - 10:24:05 1291
Clarence Fulton 10:20:56 -30.1 Dark Down 49.9 150.1 Up 10:16:59 - 10:24:53 1178
Kelowna 10:20:55 -30.5 Dark Down 50.2 149.6 Up 10:16:58 - 10:24:52 1140
Peachland 10:20:56 -30.7 Dark Down 50.2 149.2 Up 10:16:59 - 10:24:53 1117
Penticton 10:20:55 -30.8 Dark Down 50.4 149.3 Up 10:16:58 - 10:24:52 1111
Summerland 10:20:55 -30.8 Dark Down 50.3 149.2 Up 10:16:58 - 10:24:52 1110
Oliver 10:20:54 -31.0 Dark Down 50.7 149.1 Up 10:16:57 - 10:24:51 1083
Anarchist Mountain Observatory 10:20:53 -31.1 Dark Down 50.9 149.3 Up 10:16:56 - 10:24:50 1080
Tonasket 10:20:52 -31.3 Dark Down 51.2 149.0 Up 10:16:55 - 10:24:49 1053
Okanogan 10:20:52 -31.7 Dark Down 51.4 148.5 Up 10:16:55 - 10:24:49 1019
Brewster 10:20:52 -32.0 Dark Down 51.6 148.0 Up 10:16:55 - 10:24:49 988
Manson/Chelan 10:20:52 -32.3 Dark Down 51.6 147.4 Up 10:16:55 - 10:24:49 952
Wenatchee 10:20:52 -32.7 Dark Down 52.0 146.8 Up 10:16:55 - 10:24:49 906
Pasco 10:20:47 -33.0 Dark Down 53.4 147.7 Up 10:16:50 - 10:24:44 880
PNWRO 10:20:47 -33.1 Dark Down 53.7 147.9 Up 10:16:50 - 10:24:44 874
Ellensburg 10:20:52 -33.1 Dark Down 52.2 146.2 Up 10:16:55 - 10:24:49 862
Victoria 10:20:59 -33.1 Dark Down 49.9 143.2 Up 10:17:02 - 10:24:56 837
Yakima 10:20:50 -33.4 Dark Down 52.5 145.8 Up 10:16:53 - 10:24:47 830
Toppenish/White Swan 10:20:50 -33.5 Dark Down 52.8 145.9 Up 10:16:53 - 10:24:47 822
Goldendale 10:20:49 -34.1 Dark Down 53.1 144.9 Up 10:16:52 - 10:24:46 755
The Dalles 10:20:49 -34.5 Dark Down 53.1 144.2 Up 10:16:52 - 10:24:46 718
Maupin 10:20:48 -34.8 Dark Down 53.5 144.0 Up 10:16:51 - 10:24:45 690
Redmond 10:20:47 -35.5 Dark Down 54.2 143.1 Up 10:16:50 - 10:24:44 613
Sisters 10:20:48 -35.6 Dark Down 54.0 142.5 Up 10:16:51 - 10:24:45 593
Bend 10:20:47 -35.7 Dark Down 54.3 142.7 Up 10:16:50 - 10:24:44 588
Oregon Observatory 10:20:47 -35.9 Dark Down 54.4 142.4 Up 10:16:50 - 10:24:44 567
La Pine/Gilchrist 10:20:46 -36.1 Dark Down 54.5 142.1 Up 10:16:49 - 10:24:43 547
North Lake 10:20:44 -36.1 Dark Up 55.1 142.6 Up 10:16:47 - 10:24:41 546
Paisley 10:20:43 -36.4 Dark Up 55.7 142.7 Up 10:16:46 - 10:24:40 523
Lakeview 10:20:41 -36.6 Dark Up 56.2 142.5 Up 10:16:44 - 10:24:38 493
Cedarville 10:20:40 -37.0 Dark Up 56.8 142.2 Up 10:16:43 - 10:24:37 451
Chiloquin 10:20:45 -37.1 Dark Up 55.2 140.6 Up 10:16:48 - 10:24:42 438
Klamath Falls 10:20:44 -37.3 Dark Up 55.5 140.4 Up 10:16:47 - 10:24:41 415
George/Scottsdale 10:20:04 -37.1 Dark Up 66.9 148.9 Up 10:16:07 - 10:24:01 381
Patrick 10:20:13 -37.4 Dark Up 64.6 146.7 Up 10:16:16 - 10:24:10 371
Tonopah 10:20:26 -37.8 Dark Up 60.9 143.5 Up 10:16:29 - 10:24:23 357
Henderson 10:20:17 -37.8 Dark Up 63.6 145.3 Up 10:16:20 - 10:24:14 345
Kingman/Dolan Springs 10:20:12 -37.7 Dark Up 64.7 146.1 Up 10:16:15 - 10:24:09 342
Fall River/Burney 10:20:41 -38.0 Dark Up 56.6 139.8 Up 10:16:44 - 10:24:38 341
Indian Springs 10:20:19 -37.9 Dark Up 62.8 144.6 Up 10:16:22 - 10:24:16 340
Susanville 10:20:38 -38.1 Dark Up 57.4 140.3 Up 10:16:41 - 10:24:35 334
Reno 10:20:34 -38.3 Dark Up 58.5 140.7 Up 10:16:37 - 10:24:31 314
Yerington 10:20:32 -38.3 Dark Up 59.2 141.2 Up 10:16:35 - 10:24:29 310
Hawthorne 10:20:30 -38.3 Dark Up 59.9 141.6 Up 10:16:33 - 10:24:27 306
Laughlin/Bullhead City 10:20:14 -38.0 Dark Up 64.5 145.0 Up 10:16:17 - 10:24:11 305
Gimple 10:20:38 -38.4 Dark Up 57.5 139.7 Up 10:16:41 - 10:24:35 299
Portola 10:20:36 -38.4 Dark Up 58.0 140.0 Up 10:16:39 - 10:24:33 297
Beatty 10:20:22 -38.3 Dark Up 62.0 143.0 Up 10:16:25 - 10:24:19 296
Greenville 10:20:38 -38.4 Dark Up 57.5 139.6 Up 10:16:41 - 10:24:35 295
Carson City 10:20:33 -38.5 Dark Up 58.8 140.4 Up 10:16:36 - 10:24:30 287
Mohave Valley 10:20:13 -38.2 Dark Up 64.7 144.7 Up 10:16:16 - 10:24:10 285
Quincy 10:20:37 -38.6 Dark Up 57.6 139.4 Up 10:16:40 - 10:24:34 278
Lake Havasu City 10:20:11 -38.3 Dark Up 65.1 144.7 Up 10:16:14 - 10:24:08 271
Gardnerville 10:20:33 -38.7 Dark Up 59.0 140.2 Up 10:16:36 - 10:24:30 270
Parker 10:20:10 -38.5 Dark Up 65.4 144.3 Up 10:16:13 - 10:24:07 247
Lee Vining 10:20:29 -39.0 Dark Up 60.1 140.2 Up 10:16:32 - 10:24:26 231
Bishop 10:20:26 -39.0 Dark Up 60.9 140.7 Up 10:16:29 - 10:24:23 229
Blythe 10:20:10 -39.0 Dark Up 65.7 143.0 Up 10:16:13 - 10:24:07 187
Yuma 10:20:07 -39.5 Dark Up 66.4 141.6 Up 10:16:10 - 10:24:04 114
Calipatria 10:20:10 -39.9 Dark Up 65.6 140.5 Up 10:16:13 - 10:24:07 86
Idyllwild 10:20:14 -40.3 Dark Up 64.5 139.1 Up 10:16:17 - 10:24:11 54
Wildwood 10:20:19 -41.3 Dark Up 63.2 136.2 Up 10:16:22 - 10:24:16 -42
CPSLO 10:20:26 -41.7 Dark Up 61.2 134.4 Up 10:16:29 - 10:24:23 -77

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 471325, (2022/03/25 10:19UT)
Object            RA         Dec     mag  sep  mel
Arcturus       14:15:38.0 +19:10:14  0.0 23.88  77
Unukalhai      15:44:16.3 +06:25:33  2.6  7.19  53
39 Ser         15:53:11.9 +13:11:36  6.1  0.28  56
PPM 131767     15:52:22.3 +13:24:20  9.1  0.07  56
471325         15:52:13.0 +13:20:43 16.3        56
Positions are for J2000

Event circumstances last updated at 2021/10/11 01:46:59 UT

Marc W. Buie, Southwest Research Institute

RECON