RECON: TNO occultation with 471318

Event between (471318) 11JF31 and star GA0700:06061836 with event index number of 2653984

Geocentric closest approach at 2023/05/09 06:01:35 UTC

J2000 position of star is 15:57:00.8 -18:19:48
Equinox of date position of star is 15:58:19.5 -18:23:40
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 34 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 42.9 AU from the Sun and 41.9 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1586 km.
The sky-plane scale is 30396.9 km/arcsec.

The TNO has an absolute magnitude Hv=5.4
Diameter=496.6 km assuming a 5% albedo -- 20.1 sec chord
Diameter=202.7 km assuming a 30% albedo -- 8.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 471318, (2023/05/09 06:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.6 -26:28:54  0.9 11.03  24
8Bet1Sco       16:06:47.9 -19:52:03  2.6  2.48  31
47 Lib         15:56:21.6 -19:27:00  5.9  1.16  34
PPM 230954     15:57:10.4 -18:05:46  8.2  0.41  34
PPM 231004     15:58:49.1 -18:21:02  9.6  0.12  33
471318         15:58:21.6 -18:23:46 15.5        33
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 10.8 km RECON observability=0.4 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)
Sleaford 06:03:51 -19.5 Dark Down 15.6 153.0 Really Low 05:56:12 - 06:11:30 13776
Kamloops 06:04:23 -17.6 AT Down 11.9 139.8 Really Low 05:56:44 - 06:12:02 13287
Kelowna 06:04:22 -18.6 Dark Down 12.9 140.5 Really Low 05:56:43 - 06:12:01 13263
Peachland 06:04:23 -18.6 Dark Down 12.8 140.2 Really Low 05:56:44 - 06:12:02 13248
Summerland 06:04:22 -18.8 Dark Down 13.0 140.2 Really Low 05:56:43 - 06:12:01 13241
Penticton 06:04:22 -18.8 Dark Down 13.1 140.3 Really Low 05:56:43 - 06:12:01 13240
Oliver 06:04:24 -19.2 Dark Down 13.4 140.3 Really Low 05:56:45 - 06:12:03 13218
Anarchist Mountain Observatory 06:04:23 -19.4 Dark Down 13.6 140.4 Really Low 05:56:44 - 06:12:02 13214
Tonasket 06:04:24 -19.6 Dark Down 13.8 140.3 Really Low 05:56:45 - 06:12:03 13192
Okanogan 06:04:25 -19.9 Dark Down 14.0 140.1 Really Low 05:56:46 - 06:12:04 13166
Brewster 06:04:25 -20.0 Dark Down 14.1 139.9 Really Low 05:56:46 - 06:12:04 13142
Manson/Chelan 06:04:27 -20.1 Dark Down 14.1 139.6 Really Low 05:56:48 - 06:12:06 13117
Dunrhomin 06:04:00 -31.1 Dark Up 26.4 151.7 Low 05:56:21 - 06:11:39 13102
CU-SBO 06:04:00 -31.4 Dark Up 26.6 151.5 Low 05:56:21 - 06:11:39 13082
Wenatchee 06:04:28 -20.5 Dark Down 14.4 139.4 Really Low 05:56:49 - 06:12:07 13081
Victoria 06:04:30 -18.5 Dark Down 12.2 136.9 Really Low 05:56:51 - 06:12:09 13058
Ellensburg 06:04:28 -20.8 Dark Down 14.6 139.1 Really Low 05:56:49 - 06:12:07 13047
PNWRO 06:04:28 -22.2 Dark Down 16.1 140.4 Really Low 05:56:49 - 06:12:07 13033
Yakima 06:04:28 -21.1 Dark Down 14.9 139.0 Really Low 05:56:49 - 06:12:07 13019
Toppenish/White Swan 06:04:29 -21.4 Dark Down 15.1 139.1 Really Low 05:56:50 - 06:12:08 13010
Goldendale 06:04:32 -21.7 Dark Down 15.4 138.7 Really Low 05:56:53 - 06:12:11 12959
The Dalles 06:04:32 -21.8 Dark Down 15.4 138.3 Really Low 05:56:53 - 06:12:11 12931
Maupin 06:04:32 -22.2 Dark Down 15.7 138.3 Really Low 05:56:53 - 06:12:11 12906
Sisters 06:04:34 -22.8 Dark Down 16.2 137.7 Really Low 05:56:55 - 06:12:13 12829
Bend 06:04:34 -23.1 Dark Down 16.5 137.9 Really Low 05:56:55 - 06:12:13 12821
Oregon Observatory 06:04:35 -23.2 Dark Down 16.5 137.8 Really Low 05:56:56 - 06:12:14 12804
North Lake 06:04:34 -23.9 Dark Down 17.3 138.1 Really Low 05:56:55 - 06:12:13 12777
Lakeview 06:04:35 -25.0 Dark Down 18.3 138.3 Really Low 05:56:56 - 06:12:14 12720
Chiloquin 06:04:38 -24.1 Dark Down 17.3 137.2 Really Low 05:56:59 - 06:12:17 12696
Cedarville 06:04:34 -25.7 Dark Down 18.9 138.4 Really Low 05:56:55 - 06:12:13 12678
Klamath Falls 06:04:37 -24.5 Dark Down 17.6 137.1 Really Low 05:56:58 - 06:12:16 12673
Fall River/Burney 06:04:39 -25.6 Dark Down 18.6 137.2 Really Low 05:57:00 - 06:12:18 12600
Susanville 06:04:37 -26.4 Dark Down 19.5 137.7 Really Low 05:56:58 - 06:12:16 12579
Gimple 06:04:38 -26.6 Dark Down 19.6 137.4 Really Low 05:56:59 - 06:12:17 12551
Greenville 06:04:38 -26.6 Dark Down 19.5 137.4 Really Low 05:56:59 - 06:12:17 12548
Reno 06:04:36 -27.5 Dark Down 20.6 138.2 Low 05:56:57 - 06:12:15 12543
Portola 06:04:37 -27.0 Dark Down 20.0 137.7 Low 05:56:58 - 06:12:16 12540
Quincy 06:04:38 -26.7 Dark Down 19.7 137.3 Really Low 05:56:59 - 06:12:17 12533
Yerington 06:04:35 -28.3 Dark Down 21.3 138.6 Low 05:56:56 - 06:12:14 12525
Tonopah 06:04:31 -29.8 Dark Down 23.0 140.0 Low 05:56:52 - 06:12:10 12525
Carson City 06:04:37 -27.8 Dark Down 20.8 138.1 Low 05:56:58 - 06:12:16 12517
Hawthorne 06:04:34 -28.9 Dark Down 21.9 138.9 Low 05:56:55 - 06:12:13 12509
Gardnerville 06:04:36 -28.1 Dark Down 21.0 138.1 Low 05:56:57 - 06:12:15 12500
Indian Springs 06:04:29 -31.7 Dark Down 24.9 140.9 Low 05:56:50 - 06:12:08 12468
Beatty 06:04:32 -31.0 Dark Down 24.1 140.1 Low 05:56:53 - 06:12:11 12453
Henderson 06:04:27 -32.4 Dark Down 25.7 141.4 Low 05:56:48 - 06:12:06 12452
Lee Vining 06:04:36 -29.2 Dark Down 22.1 138.4 Low 05:56:57 - 06:12:15 12449
Patrick 06:04:25 -33.4 Dark Down 26.7 142.2 Low 05:56:46 - 06:12:04 12445
Bishop 06:04:35 -30.0 Dark Down 22.9 138.8 Low 05:56:56 - 06:12:14 12429
Kingman/Dolan Springs 06:04:23 -33.5 Dark Down 26.8 142.0 Low 05:56:44 - 06:12:02 12421
Laughlin/Bullhead City 06:04:27 -33.3 Dark Down 26.6 141.5 Low 05:56:48 - 06:12:06 12400
George/Scottsdale 06:04:21 -35.6 Dark Up 29.1 143.5 Low 05:56:42 - 06:12:00 12389
Mohave Valley 06:04:28 -33.6 Dark Down 26.8 141.4 Low 05:56:49 - 06:12:07 12379
Lake Havasu City 06:04:26 -34.0 Dark Down 27.2 141.5 Low 05:56:47 - 06:12:05 12357
Parker 06:04:26 -34.4 Dark Down 27.5 141.4 Low 05:56:47 - 06:12:05 12330
Idyllwild 06:04:33 -33.8 Dark Down 26.6 139.2 Low 05:56:54 - 06:12:12 12207
Calipatria 06:04:30 -34.8 Dark Down 27.7 140.0 Low 05:56:51 - 06:12:09 12202
Yuma 06:04:29 -35.5 Dark Down 28.5 140.6 Low 05:56:50 - 06:12:08 12202
Wildwood 06:04:37 -32.7 Dark Down 25.3 137.7 Low 05:56:58 - 06:12:16 12163

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 471318, (2023/05/09 06:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 11.03  24
8Bet1Sco       16:05:26.2 -19:48:20  2.6  2.48  31
47 Lib         15:55:00.4 -19:22:59  5.9  1.16  34
PPM 230954     15:55:49.8 -18:01:46  8.2  0.41  34
PPM 231004     15:57:28.4 -18:17:05  9.6  0.12  33
471318         15:57:00.8 -18:19:48 15.5        34
Positions are for J2000

Event circumstances last updated at 2022/10/04 04:11:29 UT

Marc W. Buie, Southwest Research Institute

RECON