RECON: TNO occultation with 600217

Event between (600217) 11QY100 and star GA0880:02477908 with event index number of 2730530

Geocentric closest approach at 2024/09/11 10:51:46 UTC

J2000 position of star is 07:06:50.9 -00:56:35
Equinox of date position of star is 07:07:57.9 -00:58:42
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 141 degrees from the moon. Moon is 52% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 20.2 AU from the Sun and 20.6 AU from the Earth.
The TNO is moving 24.3 km/sec on the sky relative to the star, or, 5.9 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 1131 km.
The sky-plane scale is 14950.2 km/arcsec.

The TNO has an absolute magnitude Hv=8.2
Diameter=137.4 km assuming a 5% albedo -- 5.7 sec chord
Diameter=56.1 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 600217, (2024/09/11 10:52UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:14.2 -16:45:02 -1.5 16.66 131
Alhena         06:39:08.3 +16:22:34  1.9 18.77 159
21 Mon         07:12:39.3 -00:20:41  5.5  1.30 141
PPM 176665     07:07:08.2 -01:03:40  7.9  0.25 142
PPM 176674     07:07:55.8 -01:03:40  9.1  0.09 141
600217         07:08:06.3 -00:58:59 16.5       141
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 0.0 km RECON observability=0.0 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 10:48:05 -16.0 AT Down 17.3 115.3 Really Low 10:42:26 - 10:53:44 7108
Kamloops 10:47:49 -24.1 Dark Down 9.2 103.0 Really Low 10:42:10 - 10:53:28 6776
Kelowna 10:47:48 -24.2 Dark Down 10.0 103.5 Really Low 10:42:09 - 10:53:27 6703
Peachland 10:47:48 -24.4 Dark Down 9.8 103.3 Really Low 10:42:09 - 10:53:27 6689
Summerland 10:47:47 -24.5 Dark Down 9.9 103.3 Really Low 10:42:08 - 10:53:26 6675
Penticton 10:47:48 -24.5 Dark Down 10.0 103.4 Really Low 10:42:09 - 10:53:27 6669
Oliver 10:47:47 -24.7 Dark Down 10.1 103.3 Really Low 10:42:08 - 10:53:26 6634
Anarchist Mountain Observatory 10:47:47 -24.7 Dark Down 10.2 103.5 Really Low 10:42:08 - 10:53:26 6618
Tonasket 10:47:46 -25.0 Dark Down 10.2 103.4 Really Low 10:42:07 - 10:53:25 6586
Okanogan 10:47:47 -25.3 Dark Down 10.2 103.2 Really Low 10:42:08 - 10:53:26 6550
Victoria 10:47:44 -27.0 Dark Down 7.7 100.2 Really Low 10:42:05 - 10:53:23 6529
Brewster 10:47:46 -25.6 Dark Down 10.1 103.0 Really Low 10:42:07 - 10:53:25 6520
Manson/Chelan 10:47:44 -25.9 Dark Down 10.0 102.6 Really Low 10:42:05 - 10:53:23 6495
Wenatchee 10:47:44 -26.3 Dark Down 9.9 102.4 Really Low 10:42:05 - 10:53:23 6445
Ellensburg 10:47:43 -26.7 Dark Down 9.9 102.2 Really Low 10:42:04 - 10:53:22 6400
Yakima 10:47:43 -26.9 Dark Down 10.0 102.1 Really Low 10:42:04 - 10:53:22 6357
Pasco 10:47:43 -26.4 Dark Down 11.0 103.1 Really Low 10:42:04 - 10:53:22 6338
Toppenish/White Swan 10:47:43 -27.0 Dark Down 10.1 102.2 Really Low 10:42:04 - 10:53:22 6337
PNWRO 10:47:43 -26.4 Dark Down 11.2 103.3 Really Low 10:42:04 - 10:53:22 6315
Goldendale 10:47:41 -27.6 Dark Down 9.9 101.8 Really Low 10:42:02 - 10:53:20 6275
The Dalles 10:47:42 -27.9 Dark Down 9.7 101.5 Really Low 10:42:03 - 10:53:21 6248
Maupin 10:47:41 -28.1 Dark Down 9.9 101.5 Really Low 10:42:02 - 10:53:20 6205
Redmond 10:47:39 -28.8 Dark Down 10.0 101.3 Really Low 10:42:00 - 10:53:18 6110
Sisters 10:47:40 -29.0 Dark Down 9.7 101.0 Really Low 10:42:01 - 10:53:19 6108
Bend 10:47:39 -29.0 Dark Down 9.9 101.1 Really Low 10:42:00 - 10:53:18 6086
Oregon Observatory 10:47:39 -29.2 Dark Down 9.9 101.0 Really Low 10:42:00 - 10:53:18 6066
La Pine/Gilchrist 10:47:39 -29.4 Dark Down 9.9 100.9 Really Low 10:42:00 - 10:53:18 6044
North Lake 10:47:38 -29.3 Dark Down 10.4 101.3 Really Low 10:41:59 - 10:53:17 6004
Paisley 10:47:38 -29.5 Dark Down 10.7 101.4 Really Low 10:41:59 - 10:53:17 5950
Dunrhomin 10:47:53 -21.0 Dark Down 22.5 112.0 Low 10:42:14 - 10:53:32 5946
Chiloquin 10:47:37 -30.3 Dark Down 9.8 100.5 Really Low 10:41:58 - 10:53:16 5923
Lakeview 10:47:37 -29.7 Dark Down 11.0 101.5 Really Low 10:41:58 - 10:53:16 5899
Klamath Falls 10:47:37 -30.5 Dark Down 9.9 100.5 Really Low 10:41:58 - 10:53:16 5887
Cedarville 10:47:37 -30.0 Dark Down 11.2 101.4 Really Low 10:41:58 - 10:53:16 5831
Fall River/Burney 10:47:36 -31.0 Dark Down 10.4 100.5 Really Low 10:41:57 - 10:53:15 5766
Susanville 10:47:35 -31.0 Dark Down 11.1 100.9 Really Low 10:41:56 - 10:53:14 5707
Gimple 10:47:35 -31.3 Dark Down 11.0 100.7 Really Low 10:41:56 - 10:53:14 5675
Greenville 10:47:36 -31.3 Dark Down 10.9 100.6 Really Low 10:41:57 - 10:53:15 5674
Quincy 10:47:36 -31.5 Dark Down 11.0 100.6 Really Low 10:41:57 - 10:53:15 5652
Portola 10:47:35 -31.2 Dark Down 11.4 100.9 Really Low 10:41:56 - 10:53:14 5644
Reno 10:47:36 -31.0 Dark Down 11.9 101.3 Really Low 10:41:57 - 10:53:15 5624
Carson City 10:47:36 -31.2 Dark Down 12.0 101.2 Really Low 10:41:57 - 10:53:15 5585
Yerington 10:47:36 -30.9 Dark Down 12.5 101.6 Really Low 10:41:57 - 10:53:15 5573
Gardnerville 10:47:35 -31.3 Dark Down 12.1 101.2 Really Low 10:41:56 - 10:53:14 5560
Hawthorne 10:47:35 -30.9 Dark Down 13.0 101.9 Really Low 10:41:56 - 10:53:14 5530
Tonopah 10:47:36 -30.2 Dark Down 14.2 102.7 Really Low 10:41:57 - 10:53:15 5499
Lee Vining 10:47:34 -31.5 Dark Down 12.7 101.4 Really Low 10:41:55 - 10:53:13 5463
Bishop 10:47:35 -31.4 Dark Down 13.4 101.7 Really Low 10:41:56 - 10:53:14 5408
Beatty 10:47:36 -30.6 Dark Down 14.8 102.7 Really Low 10:41:57 - 10:53:15 5381
Indian Springs 10:47:36 -30.0 Dark Down 15.7 103.3 Really Low 10:41:57 - 10:53:15 5362
Henderson 10:47:38 -29.8 Dark Down 16.4 103.6 Really Low 10:41:59 - 10:53:17 5316
Patrick 10:47:39 -29.4 Dark Down 17.4 104.1 Really Low 10:42:00 - 10:53:18 5267
Kingman/Dolan Springs 10:47:38 -29.6 Dark Down 17.3 104.0 Really Low 10:41:59 - 10:53:17 5240
Laughlin/Bullhead City 10:47:38 -30.0 Dark Down 16.9 103.6 Really Low 10:41:59 - 10:53:17 5229
Mohave Valley 10:47:37 -30.1 Dark Down 17.0 103.5 Really Low 10:41:58 - 10:53:16 5200
Lake Havasu City 10:47:38 -30.2 Dark Down 17.3 103.6 Really Low 10:41:59 - 10:53:17 5161
CPSLO 10:47:31 -34.1 Dark Down 12.0 99.9 Really Low 10:41:52 - 10:53:10 5155
Parker 10:47:37 -30.3 Dark Down 17.4 103.5 Really Low 10:41:58 - 10:53:16 5123
George/Scottsdale 10:47:40 -28.8 Dark Down 19.5 104.9 Really Low 10:42:01 - 10:53:19 5121
Blythe 10:47:37 -30.8 Dark Down 17.3 103.1 Really Low 10:41:58 - 10:53:16 5061
Wildwood 10:47:33 -33.4 Dark Down 13.9 100.8 Really Low 10:41:54 - 10:53:12 5051
Idyllwild 10:47:35 -32.3 Dark Down 15.5 101.9 Really Low 10:41:56 - 10:53:14 5040
Calipatria 10:47:36 -31.7 Dark Down 16.6 102.4 Really Low 10:41:57 - 10:53:15 4993
Yuma 10:47:37 -31.3 Dark Down 17.4 102.8 Really Low 10:41:58 - 10:53:16 4961

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 600217, (2024/09/11 10:52UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.0 -16:43:24 -1.5 16.66 131
Alhena         06:37:42.8 +16:23:57  1.9 18.77 159
21 Mon         07:11:23.5 -00:18:08  5.5  1.30 141
PPM 176665     07:05:52.8 -01:01:18  7.9  0.25 142
PPM 176674     07:06:40.5 -01:01:17  9.1  0.09 141
600217         07:06:50.9 -00:56:35 16.5       141
Positions are for J2000

Event circumstances last updated at 2021/12/02 01:57:58 UT

Marc W. Buie, Southwest Research Institute

RECON