RECON: TNO occultation with 11JY31

Event between 11JY31 and star GA0700:33116460 with event index number of 2121259

Geocentric closest approach at 2022/09/04 06:43:25 UTC

J2000 position of star is 19:26:25.9 -19:38:24
Equinox of date position of star is 19:27:44.0 -19:35:39
Stellar brightness G=15.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 32 degrees from the moon. Moon is 56% illuminated.
TNO apparent brightness V=25.2

[RECON map]
TNO is 42.3 AU from the Sun and 41.6 AU from the Earth.
The TNO is moving 13.5 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 1011 seconds.
The 1-sigma cross-track error in the shadow position is 4387 km.
The sky-plane scale is 30190.1 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=103.8 km assuming a 5% albedo -- 7.7 sec chord
Diameter=42.4 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11JY31, (2022/09/04 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:48.1 -26:28:49  0.9 41.09   9
Nunki          18:56:40.2 -26:16:00  2.0  9.78  24
45Rho2Sgr      19:23:10.2 -18:15:52  5.8  1.72  32
PPM 236018     19:29:22.9 -19:17:43  8.1  0.48  33
PPM 235972     19:26:51.9 -19:19:56  9.4  0.34  32
11JY31         19:27:45.7 -19:35:35 15.1        32
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 0.9 sigma about the mid-time.
The median site spacing is 23.4 km RECON observability=0.6 and success probability=4.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:39:30 -29.6 Dark Down 14.5 210.3 Really Low 06:24:30 - 06:54:30 6178
Victoria 06:39:37 -30.7 Dark Down 17.3 207.8 Really Low 06:24:37 - 06:54:37 6143
Peachland 06:39:26 -30.6 Dark Down 15.1 211.0 Really Low 06:24:26 - 06:54:26 6117
Kelowna 06:39:24 -30.5 Dark Down 14.9 211.2 Really Low 06:24:24 - 06:54:24 6115
Summerland 06:39:26 -30.7 Dark Down 15.2 211.1 Really Low 06:24:26 - 06:54:26 6107
Penticton 06:39:23 -30.8 Dark Down 15.2 211.2 Really Low 06:24:23 - 06:54:23 6101
Oliver 06:39:22 -31.1 Dark Down 15.5 211.2 Really Low 06:24:22 - 06:54:22 6082
Anarchist Mountain Observatory 06:39:21 -31.3 Dark Down 15.6 211.4 Really Low 06:24:21 - 06:54:21 6069
Tonasket 06:39:21 -31.6 Dark Down 15.9 211.4 Really Low 06:24:21 - 06:54:21 6054
Okanogan 06:39:21 -31.9 Dark Down 16.2 211.3 Really Low 06:24:21 - 06:54:21 6039
Brewster 06:39:20 -32.1 Dark Down 16.5 211.2 Really Low 06:24:20 - 06:54:20 6030
Manson/Chelan 06:39:21 -32.2 Dark Down 16.8 210.9 Really Low 06:24:21 - 06:54:21 6028
Wenatchee 06:39:21 -32.6 Dark Down 17.3 210.8 Really Low 06:24:21 - 06:54:21 6007
Ellensburg 06:39:22 -32.9 Dark Down 17.7 210.7 Really Low 06:24:22 - 06:54:22 5990
Yakima 06:39:22 -33.2 Dark Down 18.1 210.7 Really Low 06:24:22 - 06:54:22 5967
Toppenish/White Swan 06:39:19 -33.5 Dark Down 18.2 210.9 Really Low 06:24:19 - 06:54:19 5951
Goldendale 06:39:19 -33.9 Dark Down 18.8 210.6 Really Low 06:24:19 - 06:54:19 5931
The Dalles 06:39:22 -34.0 Dark Down 19.2 210.3 Really Low 06:24:22 - 06:54:22 5927
Maupin 06:39:22 -34.4 Dark Down 19.5 210.5 Really Low 06:24:22 - 06:54:22 5901
Sleaford 06:38:41 -30.5 Dark Down 8.1 222.7 Really Low 06:23:41 - 06:53:41 5891
PNWRO 06:39:13 -34.2 Dark Down 18.0 212.3 Really Low 06:24:13 - 06:54:13 5890
Sisters 06:39:22 -35.0 Dark Down 20.4 210.2 Low 06:24:22 - 06:54:22 5863
Bend 06:39:20 -35.3 Dark Down 20.5 210.5 Low 06:24:20 - 06:54:20 5842
Oregon Observatory 06:39:19 -35.4 Dark Down 20.7 210.4 Low 06:24:19 - 06:54:19 5835
North Lake 06:39:16 -36.2 Dark Down 21.1 211.0 Low 06:24:16 - 06:54:16 5782
Chiloquin 06:39:19 -36.4 Dark Down 22.0 210.3 Low 06:24:19 - 06:54:19 5767
Klamath Falls 06:39:17 -36.8 Dark Down 22.3 210.4 Low 06:24:17 - 06:54:17 5744
Lakeview 06:39:12 -37.3 Dark Down 21.8 211.7 Low 06:24:12 - 06:54:12 5701
Fall River/Burney 06:39:14 -38.0 Dark Up 23.2 211.0 Low 06:24:14 - 06:54:14 5659
Cedarville 06:39:10 -37.9 Dark Down 22.3 212.0 Low 06:24:10 - 06:54:10 5655
Susanville 06:39:10 -38.8 Dark Up 23.4 211.8 Low 06:24:10 - 06:54:10 5597
Greenville 06:39:12 -38.9 Dark Up 23.8 211.6 Low 06:24:12 - 06:54:12 5587
Gimple 06:39:10 -38.9 Dark Up 23.7 211.7 Low 06:24:10 - 06:54:10 5585
Quincy 06:39:10 -39.1 Dark Up 23.9 211.6 Low 06:24:10 - 06:54:10 5574
Portola 06:39:07 -39.4 Dark Up 23.9 212.1 Low 06:24:07 - 06:54:07 5552
Reno 06:39:04 -39.8 Dark Up 23.8 212.8 Low 06:24:04 - 06:54:04 5515
Carson City 06:39:04 -40.1 Dark Up 24.1 212.9 Low 06:24:04 - 06:54:04 5491
Gardnerville 06:39:02 -40.4 Dark Up 24.3 213.0 Low 06:24:02 - 06:54:02 5473
Yerington 06:39:01 -40.5 Dark Up 24.0 213.5 Low 06:24:01 - 06:54:01 5459
Hawthorne 06:38:57 -41.1 Dark Up 24.2 214.1 Low 06:23:57 - 06:53:57 5411
Lee Vining 06:38:59 -41.5 Dark Up 24.9 213.8 Low 06:23:59 - 06:53:59 5388
Tonopah 06:38:48 -42.0 Dark Down 23.9 215.4 Low 06:23:48 - 06:53:48 5336
Bishop 06:38:53 -42.3 Dark Up 25.0 214.6 Low 06:23:53 - 06:53:53 5324
Beatty 06:38:44 -43.2 Dark Down 24.7 216.1 Low 06:23:44 - 06:53:44 5240
Indian Springs 06:38:38 -43.8 Dark Down 24.4 217.2 Low 06:23:38 - 06:53:38 5183
Henderson 06:38:33 -44.5 Dark Down 24.5 217.9 Low 06:23:33 - 06:53:33 5122
Dunrhomin 06:38:00 -42.3 Dark Down 16.3 225.0 Really Low 06:23:00 - 06:53:00 5114
CU-SBO 06:38:01 -42.6 Dark Down 16.6 225.0 Really Low 06:23:01 - 06:53:01 5099
Wildwood 06:38:50 -45.1 Dark Up 27.8 215.3 Low 06:23:50 - 06:53:50 5094
Laughlin/Bullhead City 06:38:31 -45.5 Dark Down 25.0 218.5 Low 06:23:31 - 06:53:31 5044
Patrick 06:38:27 -45.4 Dark Down 24.5 219.1 Low 06:23:27 - 06:53:27 5040
Kingman/Dolan Springs 06:38:28 -45.6 Dark Down 24.7 219.0 Low 06:23:28 - 06:53:28 5029
Mohave Valley 06:38:29 -45.7 Dark Down 25.2 218.6 Low 06:23:29 - 06:53:29 5023
Idyllwild 06:38:39 -46.1 Dark Up 27.2 217.1 Low 06:23:39 - 06:53:39 5007
Lake Havasu City 06:38:29 -46.2 Dark Down 25.4 218.9 Low 06:23:29 - 06:53:29 4985
Parker 06:38:29 -46.5 Dark Down 25.7 219.1 Low 06:23:29 - 06:53:29 4958
Calipatria 06:38:33 -47.0 Dark Up 27.1 218.3 Low 06:23:33 - 06:53:33 4921
Yuma 06:38:27 -47.7 Dark Up 27.0 219.2 Low 06:23:27 - 06:53:27 4858
George/Scottsdale 06:38:14 -47.5 Dark Down 24.7 221.2 Low 06:23:14 - 06:53:14 4845

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 11JY31, (2022/09/04 06:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 41.09   9
Nunki          18:55:15.9 -26:17:49  2.0  9.78  24
45Rho2Sgr      19:21:51.1 -18:18:33  5.8  1.72  32
PPM 236018     19:28:03.3 -19:20:34  8.1  0.48  33
PPM 235972     19:25:32.3 -19:22:43  9.4  0.34  32
11JY31         19:26:25.9 -19:38:24 15.1        32
Positions are for J2000

Event circumstances last updated at 2022/03/14 01:07:24 UT

Marc W. Buie, Southwest Research Institute

RECON