RECON: TNO occultation with 471272

Event between (471272) 11FY9 and star GA0840:04704543 with event index number of 2572454

Geocentric closest approach at 2023/05/09 07:16:06 UTC

J2000 position of star is 15:41:33.3 -04:07:22
Equinox of date position of star is 15:42:42.1 -04:11:29
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 24.4 AU from the Sun and 23.4 AU from the Earth.
The TNO is moving 24.6 km/sec on the sky relative to the star, or, 5.2 arcsec/hr.
The 1-sigma error in the time of the event is 62 seconds.
The 1-sigma cross-track error in the shadow position is 1099 km.
The sky-plane scale is 16959.9 km/arcsec.

The TNO has an absolute magnitude Hv=8.9
Diameter=97.7 km assuming a 5% albedo -- 4.0 sec chord
Diameter=39.9 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471272, (2023/05/09 07:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.6 -26:28:54  0.9 25.08  25
27Bet Lib      15:18:16.0 -09:28:03  2.6  8.05  47
PPM 198970     15:50:10.3 -03:53:20  6.0  1.87  43
PPM 198794     15:38:58.9 -03:40:51  8.3  1.08  46
PPM 198862     15:42:29.1 -04:04:06  9.6  0.15  45
471272         15:42:47.0 -04:11:47 15.0        44
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 17.1 km RECON observability=1.0 and success probability=0.3%
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 07:18:19 -22.0 Dark Down 33.4 158.0 Up 07:12:41 - 07:23:56 5563
Kelowna 07:18:19 -22.4 Dark Down 33.7 157.7 Up 07:12:41 - 07:23:56 5531
Peachland 07:18:20 -22.4 Dark Down 33.7 157.4 Up 07:12:42 - 07:23:57 5515
Summerland 07:18:20 -22.6 Dark Down 33.9 157.4 Up 07:12:43 - 07:23:58 5507
Penticton 07:18:19 -22.7 Dark Down 34.0 157.5 Up 07:12:42 - 07:23:57 5505
Oliver 07:18:19 -23.0 Dark Down 34.3 157.5 Up 07:12:42 - 07:23:57 5480
Anarchist Mountain Observatory 07:18:18 -23.2 Dark Down 34.5 157.6 Up 07:12:40 - 07:23:55 5474
Tonasket 07:18:19 -23.5 Dark Down 34.8 157.5 Up 07:12:42 - 07:23:57 5449
Okanogan 07:18:19 -23.8 Dark Down 35.1 157.2 Up 07:12:42 - 07:23:57 5420
Brewster 07:18:20 -24.1 Dark Down 35.3 156.9 Up 07:12:43 - 07:23:58 5394
Manson/Chelan 07:18:21 -24.2 Dark Down 35.4 156.4 Up 07:12:44 - 07:23:59 5368
Wenatchee 07:18:21 -24.7 Dark Down 35.7 156.1 Up 07:12:44 - 07:23:59 5327
Victoria 07:18:29 -23.2 Dark Down 33.9 152.8 Up 07:12:52 - 07:24:07 5318
Ellensburg 07:18:21 -25.1 Dark Down 36.1 155.7 Up 07:12:44 - 07:23:59 5290
Dunrhomin 07:17:34 -32.2 Dark Up 45.4 173.9 Up 07:11:56 - 07:23:11 5287
Pasco 07:18:18 -26.0 Dark Down 37.1 157.2 Up 07:12:40 - 07:23:55 5277
PNWRO 07:18:18 -26.2 Dark Down 37.4 157.4 Up 07:12:40 - 07:23:55 5266
Yakima 07:18:22 -25.5 Dark Down 36.4 155.5 Up 07:12:44 - 07:23:59 5259
Toppenish/White Swan 07:18:21 -25.7 Dark Down 36.7 155.7 Up 07:12:43 - 07:23:58 5247
Goldendale 07:18:21 -26.2 Dark Down 37.1 155.0 Up 07:12:44 - 07:23:59 5192
The Dalles 07:18:24 -26.3 Dark Down 37.2 154.5 Up 07:12:46 - 07:24:01 5163
Maupin 07:18:23 -26.8 Dark Down 37.6 154.5 Up 07:12:45 - 07:24:00 5134
Redmond 07:18:23 -27.6 Dark Down 38.3 154.1 Up 07:12:45 - 07:24:00 5061
Sisters 07:18:25 -27.6 Dark Down 38.2 153.6 Up 07:12:47 - 07:24:02 5050
Bend 07:18:23 -27.8 Dark Down 38.5 153.8 Up 07:12:46 - 07:24:01 5040
Oregon Observatory 07:18:24 -28.0 Dark Down 38.6 153.6 Up 07:12:47 - 07:24:02 5022
La Pine/Gilchrist 07:18:24 -28.2 Dark Down 38.8 153.5 Up 07:12:47 - 07:24:02 5004
North Lake 07:18:22 -28.7 Dark Up 39.4 154.0 Up 07:12:45 - 07:24:00 4989
Paisley 07:18:20 -29.3 Dark Up 40.0 154.3 Up 07:12:43 - 07:23:58 4956
Lakeview 07:18:21 -29.8 Dark Up 40.5 154.3 Up 07:12:43 - 07:23:58 4922
Chiloquin 07:18:24 -29.2 Dark Up 39.6 152.6 Up 07:12:46 - 07:24:01 4903
Klamath Falls 07:18:25 -29.6 Dark Up 40.0 152.6 Up 07:12:47 - 07:24:02 4878
Cedarville 07:18:19 -30.5 Dark Up 41.1 154.3 Up 07:12:42 - 07:23:57 4875
Fall River/Burney 07:18:22 -30.8 Dark Up 41.2 152.6 Up 07:12:45 - 07:24:00 4794
Susanville 07:18:20 -31.5 Dark Up 42.0 153.2 Up 07:12:42 - 07:23:57 4767
Gimple 07:18:21 -31.7 Dark Up 42.1 152.9 Up 07:12:43 - 07:23:58 4737
Greenville 07:18:20 -31.7 Dark Up 42.1 152.8 Up 07:12:43 - 07:23:58 4734
Reno 07:18:17 -32.5 Dark Up 43.0 153.9 Up 07:12:39 - 07:23:54 4724
Portola 07:18:19 -32.1 Dark Up 42.6 153.2 Up 07:12:42 - 07:23:57 4724
Quincy 07:18:21 -31.9 Dark Up 42.3 152.7 Up 07:12:44 - 07:23:59 4717
Yerington 07:18:15 -33.1 Dark Up 43.7 154.6 Up 07:12:38 - 07:23:53 4700
Carson City 07:18:17 -32.8 Dark Up 43.4 153.8 Up 07:12:39 - 07:23:54 4695
Tonopah 07:18:08 -34.3 Dark Up 45.2 156.7 Up 07:12:31 - 07:23:46 4691
Hawthorne 07:18:13 -33.6 Dark Up 44.3 155.0 Up 07:12:35 - 07:23:50 4680
Gardnerville 07:18:17 -33.1 Dark Up 43.6 153.8 Up 07:12:39 - 07:23:54 4676
Indian Springs 07:18:03 -35.9 Dark Up 47.1 158.2 Up 07:12:26 - 07:23:41 4622
Lee Vining 07:18:15 -34.1 Dark Up 44.7 154.2 Up 07:12:38 - 07:23:53 4616
Beatty 07:18:07 -35.5 Dark Up 46.4 156.9 Up 07:12:29 - 07:23:44 4610
Henderson 07:18:01 -36.5 Dark Up 47.8 158.9 Up 07:12:24 - 07:23:39 4602
Bishop 07:18:12 -34.8 Dark Up 45.5 154.9 Up 07:12:34 - 07:23:49 4591
Patrick 07:17:57 -37.2 Dark Up 48.6 160.3 Up 07:12:19 - 07:23:34 4590
Kingman/Dolan Springs 07:17:57 -37.4 Dark Up 48.8 159.9 Up 07:12:20 - 07:23:35 4564
Laughlin/Bullhead City 07:17:58 -37.4 Dark Up 48.7 159.2 Up 07:12:20 - 07:23:35 4543
George/Scottsdale 07:17:48 -39.0 Dark Up 50.8 162.6 Up 07:12:10 - 07:23:25 4521
Mohave Valley 07:17:58 -37.6 Dark Up 48.9 159.1 Up 07:12:20 - 07:23:35 4520
Lake Havasu City 07:17:57 -38.1 Dark Up 49.4 159.3 Up 07:12:20 - 07:23:35 4495
Parker 07:17:56 -38.4 Dark Up 49.7 159.1 Up 07:12:19 - 07:23:34 4466
Blythe 07:17:57 -38.9 Dark Up 50.1 158.5 Up 07:12:20 - 07:23:35 4409
Idyllwild 07:18:05 -38.6 Dark Up 49.3 155.5 Up 07:12:27 - 07:23:42 4341
CPSLO 07:18:18 -36.5 Dark Up 46.5 150.9 Up 07:12:40 - 07:23:55 4332
Calipatria 07:18:00 -39.3 Dark Up 50.3 156.9 Up 07:12:22 - 07:23:37 4331
Yuma 07:17:56 -39.8 Dark Up 51.0 158.0 Up 07:12:19 - 07:23:34 4328
Wildwood 07:18:11 -38.0 Dark Up 48.3 153.0 Up 07:12:33 - 07:23:48 4301

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 471272, (2023/05/09 07:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.08  25
27Bet Lib      15:17:00.3 -09:22:59  2.6  8.05  47
PPM 198970     15:48:56.7 -03:49:07  6.0  1.87  43
PPM 198794     15:37:45.5 -03:36:20  8.3  1.08  46
PPM 198862     15:41:15.4 -03:59:41  9.6  0.15  45
471272         15:41:33.3 -04:07:22 15.0        45
Positions are for J2000

Event circumstances last updated at 2021/10/17 01:13:38 UT

Marc W. Buie, Southwest Research Institute

RECON