RECON: TNO occultation with 471155

Event between (471155) 10GF65 and star GA0540:18092389 with event index number of 2232635

Geocentric closest approach at 2022/05/15 09:37:54 UTC

J2000 position of star is 17:18:00.2 -35:50:49
Equinox of date position of star is 17:19:29.6 -35:52:08
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 40 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 22.6 AU from the Sun and 21.7 AU from the Earth.
The TNO is moving 19.2 km/sec on the sky relative to the star, or, 4.4 arcsec/hr.
The 1-sigma error in the time of the event is 407 seconds.
The 1-sigma cross-track error in the shadow position is 2145 km.
The sky-plane scale is 15762.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=229.1 km assuming a 5% albedo -- 11.9 sec chord
Diameter=93.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471155, (2022/05/15 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:47.0 -26:28:47  0.9 14.01  26
34Ups Sco      17:32:17.2 -37:18:41  2.7  2.94  42
PPM 296118     17:17:51.4 -35:46:32  6.0  0.35  39
PPM 296177     17:20:08.5 -36:06:32  8.2  0.27  40
PPM 296193     17:20:38.3 -35:51:44  9.1  0.23  40
471155         17:19:30.3 -35:52:09 14.8        40
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 2.2 sigma about the mid-time.
The median site spacing is 29.7 km RECON observability=0.1 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 09:37:32 -17.0 AT Up 3.5 178.1 Really Low 09:22:32 - 09:52:32 10641
Victoria 09:37:44 -19.8 Dark Up 5.5 175.6 Really Low 09:22:44 - 09:52:44 10635
Peachland 09:37:30 -17.7 AT Up 4.4 178.5 Really Low 09:22:30 - 09:52:30 10631
Kelowna 09:37:30 -17.5 AT Up 4.3 178.8 Really Low 09:22:30 - 09:52:30 10630
Summerland 09:37:31 -17.8 AT Up 4.5 178.6 Really Low 09:22:31 - 09:52:31 10629
Penticton 09:37:29 -17.9 AT Up 4.6 178.7 Really Low 09:22:29 - 09:52:29 10628
Oliver 09:37:30 -18.2 Dark Up 5.0 178.7 Really Low 09:22:30 - 09:52:30 10625
Anarchist Mountain Observatory 09:37:29 -18.3 Dark Up 5.1 178.9 Really Low 09:22:29 - 09:52:29 10623
Tonasket 09:37:29 -18.6 Dark Up 5.4 178.8 Really Low 09:22:29 - 09:52:29 10619
Okanogan 09:37:30 -18.9 Dark Up 5.8 178.7 Really Low 09:22:30 - 09:52:30 10617
Brewster 09:37:31 -19.2 Dark Up 6.0 178.5 Really Low 09:22:31 - 09:52:31 10615
Manson/Chelan 09:37:31 -19.5 Dark Up 6.2 178.2 Really Low 09:22:31 - 09:52:31 10615
Wenatchee 09:37:33 -20.0 Dark Up 6.7 178.1 Really Low 09:22:33 - 09:52:33 10610
Ellensburg 09:37:33 -20.4 Dark Up 7.1 177.9 Really Low 09:22:33 - 09:52:33 10606
Yakima 09:37:34 -20.8 Dark Up 7.5 177.9 Really Low 09:22:34 - 09:52:34 10600
Toppenish/White Swan 09:37:33 -20.9 Dark Up 7.8 178.0 Really Low 09:22:33 - 09:52:33 10596
Goldendale 09:37:36 -21.6 Dark Up 8.3 177.7 Really Low 09:22:36 - 09:52:36 10590
The Dalles 09:37:37 -21.9 Dark Up 8.5 177.4 Really Low 09:22:37 - 09:52:37 10588
PNWRO 09:37:28 -20.8 Dark Up 8.1 179.2 Really Low 09:22:28 - 09:52:28 10582
Maupin 09:37:36 -22.2 Dark Up 8.9 177.5 Really Low 09:22:36 - 09:52:36 10581
Sisters 09:37:39 -23.2 Dark Up 9.8 177.1 Really Low 09:22:39 - 09:52:39 10568
Bend 09:37:38 -23.3 Dark Up 10.0 177.3 Really Low 09:22:38 - 09:52:38 10563
Oregon Observatory 09:37:39 -23.5 Dark Up 10.2 177.2 Really Low 09:22:39 - 09:52:39 10560
North Lake 09:37:37 -23.9 Dark Up 10.9 177.6 Really Low 09:22:37 - 09:52:37 10545
Chiloquin 09:37:41 -24.8 Dark Up 11.5 176.8 Really Low 09:22:41 - 09:52:41 10535
Klamath Falls 09:37:41 -25.1 Dark Up 11.9 176.9 Really Low 09:22:41 - 09:52:41 10527
Lakeview 09:37:35 -24.7 Dark Up 11.9 178.0 Really Low 09:22:35 - 09:52:35 10519
Sleaford 09:36:43 -11.2 NT Up 1.5 189.6 Really Low 09:21:43 - 09:51:43 10508
Cedarville 09:37:34 -25.2 Dark Up 12.6 178.2 Really Low 09:22:34 - 09:52:34 10503
Fall River/Burney 09:37:39 -26.1 Dark Up 13.0 177.2 Really Low 09:22:39 - 09:52:39 10497
Susanville 09:37:36 -26.4 Dark Up 13.7 177.8 Really Low 09:22:36 - 09:52:36 10478
Greenville 09:37:38 -26.7 Dark Up 14.0 177.5 Really Low 09:22:38 - 09:52:38 10472
Gimple 09:37:37 -26.7 Dark Up 14.0 177.6 Really Low 09:22:37 - 09:52:37 10471
Quincy 09:37:38 -26.9 Dark Up 14.2 177.5 Really Low 09:22:38 - 09:52:38 10466
Portola 09:37:35 -26.9 Dark Up 14.3 177.9 Really Low 09:22:35 - 09:52:35 10461
Reno 09:37:33 -26.9 Dark Up 14.6 178.5 Really Low 09:22:33 - 09:52:33 10449
Carson City 09:37:33 -27.2 Dark Up 14.9 178.5 Really Low 09:22:33 - 09:52:33 10439
Gardnerville 09:37:34 -27.4 Dark Up 15.2 178.5 Really Low 09:22:34 - 09:52:34 10432
Yerington 09:37:30 -27.1 Dark Up 15.2 179.0 Really Low 09:22:30 - 09:52:30 10429
Hawthorne 09:37:28 -27.4 Dark Up 15.6 179.4 Really Low 09:22:28 - 09:52:28 10412
Lee Vining 09:37:30 -28.0 Dark Up 16.2 179.0 Really Low 09:22:30 - 09:52:30 10399
Tonopah 09:37:23 -27.2 Dark Up 16.1 180.6 Really Low 09:22:23 - 09:52:23 10386
Bishop 09:37:28 -28.3 Dark Up 16.8 179.6 Really Low 09:22:28 - 09:52:28 10374
Beatty 09:37:21 -28.1 Dark Up 17.2 181.0 Really Low 09:22:21 - 09:52:21 10345
Indian Springs 09:37:15 -27.9 Dark Up 17.5 181.9 Really Low 09:22:15 - 09:52:15 10323
Henderson 09:37:13 -28.1 Dark Up 18.1 182.5 Really Low 09:22:13 - 09:52:13 10297
Dunrhomin 09:36:32 -20.2 Dark Up 13.0 190.4 Really Low 09:21:32 - 09:51:32 10285
CU-SBO 09:36:32 -20.4 Dark Up 13.3 190.4 Really Low 09:21:32 - 09:51:32 10280
Patrick 09:37:08 -28.1 Dark Up 18.6 183.4 Really Low 09:22:08 - 09:52:08 10262
Wildwood 09:37:29 -31.2 Dark Up 20.1 179.5 Low 09:22:29 - 09:52:29 10261
Laughlin/Bullhead City 09:37:11 -28.6 Dark Up 18.9 182.8 Really Low 09:22:11 - 09:52:11 10261
Kingman/Dolan Springs 09:37:08 -28.4 Dark Up 18.9 183.3 Really Low 09:22:08 - 09:52:08 10256
Mohave Valley 09:37:11 -28.8 Dark Up 19.2 182.9 Really Low 09:22:11 - 09:52:11 10251
Lake Havasu City 09:37:10 -29.1 Dark Up 19.6 183.1 Really Low 09:22:10 - 09:52:10 10233
Idyllwild 09:37:21 -30.7 Dark Up 20.4 181.1 Low 09:22:21 - 09:52:21 10232
Parker 09:37:09 -29.3 Dark Up 19.9 183.1 Really Low 09:22:09 - 09:52:09 10219
Calipatria 09:37:15 -30.7 Dark Up 21.0 182.1 Low 09:22:15 - 09:52:15 10194
George/Scottsdale 09:36:58 -28.5 Dark Up 20.2 185.2 Low 09:21:58 - 09:51:58 10172
Yuma 09:37:11 -30.7 Dark Up 21.4 182.8 Low 09:22:11 - 09:52:11 10166

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 471155, (2022/05/15 09:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.01  26
34Ups Sco      17:30:45.8 -37:17:46  2.7  2.94  42
PPM 296118     17:16:21.4 -35:45:09  6.0  0.35  39
PPM 296177     17:18:38.3 -36:05:13  8.2  0.27  40
PPM 296193     17:19:08.3 -35:50:26  9.1  0.23  40
471155         17:18:00.2 -35:50:49 14.8        39
Positions are for J2000

Event circumstances last updated at 2022/03/15 01:02:21 UT

Marc W. Buie, Southwest Research Institute

RECON