RECON: TNO occultation with 517717

Event between (517717) 15KZ120 and star GA1520:03098201 with event index number of 1347725

Geocentric closest approach at 2023/12/15 02:47:30 UTC

J2000 position of star is 03:03:03.1 +63:18:36
Equinox of date position of star is 03:04:42.4 +63:23:13
Stellar brightness G=15.1, use SENSEUP=128
Star is 124 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 12.2 AU from the Sun and 11.6 AU from the Earth.
The TNO is moving 31.9 km/sec on the sky relative to the star, or, 13.7 arcsec/hr.
The 1-sigma error in the time of the event is 100 seconds.
The 1-sigma cross-track error in the shadow position is 2954 km.
The sky-plane scale is 8378.6 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=60.3 km assuming a 5% albedo -- 1.9 sec chord
Diameter=24.6 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 517717, (2023/12/15 02:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:15.0 +45:22:01  1.3 52.77  74
37Del Cas      01:27:24.1 +60:21:32  2.7 11.82 112
PPM 014083     03:09:20.8 +64:08:54  5.8  0.88 124
PPM 013988     02:59:57.0 +63:22:30  8.5  0.57 123
PPM 014024     03:03:22.4 +63:26:13  8.7  0.19 124
517717         03:05:02.7 +63:24:09 15.1       124
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 6.2 km RECON observability=1.0 and success probability=13.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 02:48:41 -23.7 Dark Down 62.3 41.6 Up 02:39:52 - 02:57:29 2639
Sisters 02:48:55 -24.3 Dark Down 59.8 36.4 Up 02:40:06 - 02:57:43 2468
Klamath Falls 02:49:02 -23.8 Dark Down 58.0 34.4 Up 02:40:13 - 02:57:50 2459
La Pine/Gilchrist 02:48:57 -24.3 Dark Down 59.3 35.7 Up 02:40:08 - 02:57:45 2455
Oregon Observatory 02:48:56 -24.3 Dark Down 59.5 35.9 Up 02:40:08 - 02:57:45 2453
The Dalles 02:48:51 -24.8 Dark Down 61.0 37.6 Up 02:40:02 - 02:57:39 2453
Bend 02:48:55 -24.5 Dark Down 59.7 36.1 Up 02:40:07 - 02:57:44 2445
Maupin 02:48:52 -24.8 Dark Down 60.7 37.2 Up 02:40:04 - 02:57:41 2440
Redmond 02:48:55 -24.6 Dark Down 60.0 36.2 Up 02:40:06 - 02:57:43 2437
Goldendale 02:48:50 -25.1 Dark Down 61.3 37.8 Up 02:40:01 - 02:57:38 2428
Ellensburg 02:48:46 -25.4 Dark Down 62.4 39.1 Up 02:39:58 - 02:57:35 2421
Yakima 02:48:47 -25.3 Dark Down 62.0 38.6 Up 02:39:59 - 02:57:36 2418
Fall River/Burney 02:49:05 -23.9 Dark Down 57.2 33.3 Up 02:40:16 - 02:57:53 2414
Wenatchee 02:48:45 -25.6 Dark Down 62.8 39.5 Up 02:39:56 - 02:57:33 2410
Entiat 02:48:44 -25.7 Dark Down 63.0 39.8 Up 02:39:55 - 02:57:32 2406
North Lake 02:48:58 -24.6 Dark Down 59.2 35.1 Up 02:40:10 - 02:57:47 2403
Manson/Chelan 02:48:43 -25.8 Dark Down 63.2 40.1 Up 02:39:55 - 02:57:32 2403
Toppenish/White Swan 02:48:48 -25.4 Dark Down 62.0 38.3 Up 02:40:00 - 02:57:37 2403
Summerland 02:48:38 -26.3 Dark Down 64.7 42.3 Up 02:39:49 - 02:57:26 2388
Penticton 02:48:38 -26.3 Dark Down 64.7 42.1 Up 02:39:49 - 02:57:26 2379
Brewster 02:48:43 -26.0 Dark Down 63.5 40.2 Up 02:39:54 - 02:57:31 2379
Kelowna 02:48:37 -26.4 Dark Down 65.0 42.6 Up 02:39:48 - 02:57:25 2377
Oliver 02:48:39 -26.3 Dark Down 64.5 41.6 Up 02:39:50 - 02:57:27 2375
Clarence Fulton 02:48:35 -26.5 Dark Down 65.3 43.1 Up 02:39:47 - 02:57:24 2370
Paisley 02:49:00 -24.8 Dark Down 58.9 34.5 Up 02:40:12 - 02:57:49 2368
Okanogan 02:48:42 -26.2 Dark Down 63.8 40.5 Up 02:39:53 - 02:57:30 2368
Greenville 02:49:08 -24.1 Dark Down 56.7 32.4 Up 02:40:19 - 02:57:56 2365
Quincy 02:49:09 -24.0 Dark Down 56.5 32.2 Up 02:40:20 - 02:57:57 2362
Tonasket 02:48:41 -26.3 Dark Down 64.1 41.0 Up 02:39:52 - 02:57:29 2361
Anarchist Mountain Observatory 02:48:40 -26.4 Dark Down 64.4 41.4 Up 02:39:51 - 02:57:28 2360
Gimple 02:49:08 -24.1 Dark Down 56.7 32.3 Up 02:40:19 - 02:57:56 2358
Lakeview 02:49:01 -24.9 Dark Down 58.6 33.9 Up 02:40:13 - 02:57:50 2346
Susanville 02:49:07 -24.4 Dark Down 57.0 32.5 Up 02:40:19 - 02:57:56 2345
Cedarville 02:49:04 -24.9 Dark Down 58.1 33.3 Up 02:40:15 - 02:57:52 2322
Portola 02:49:09 -24.4 Dark Down 56.6 31.9 Up 02:40:20 - 02:57:57 2321
Pasco 02:48:49 -26.3 Dark Down 62.4 37.8 Up 02:40:00 - 02:57:37 2308
PNWRO 02:48:49 -26.4 Dark Down 62.3 37.4 Up 02:40:01 - 02:57:38 2287
CPSLO 02:49:23 -23.4 Dark Down 52.6 28.8 Up 02:40:34 - 02:58:11 2263
Reno 02:49:10 -24.8 Dark Down 56.6 31.5 Up 02:40:21 - 02:57:58 2263
Carson City 02:49:11 -24.8 Dark Down 56.3 31.2 Up 02:40:22 - 02:57:59 2255
Gardnerville 02:49:11 -24.8 Dark Down 56.1 31.0 Up 02:40:23 - 02:58:00 2248
Yerington 02:49:11 -25.2 Dark Down 56.4 30.8 Up 02:40:23 - 02:58:00 2199
Lee Vining 02:49:15 -25.1 Dark Down 55.5 30.0 Up 02:40:26 - 02:58:03 2178
Hawthorne 02:49:13 -25.6 Dark Down 56.2 30.3 Up 02:40:24 - 02:58:01 2147
Bishop 02:49:16 -25.5 Dark Down 55.3 29.3 Up 02:40:28 - 02:58:05 2106
Wildwood 02:49:25 -24.8 Dark Down 52.4 27.3 Up 02:40:37 - 02:58:14 2060
Tonopah 02:49:14 -26.6 Dark Down 56.4 29.3 Up 02:40:25 - 02:58:02 2019
Beatty 02:49:17 -26.8 Dark Down 55.5 28.3 Up 02:40:29 - 02:58:06 1957
Idyllwild 02:49:27 -26.2 Dark Down 52.8 26.3 Up 02:40:38 - 02:58:15 1885
Indian Springs 02:49:18 -27.6 Dark Down 55.7 27.6 Up 02:40:29 - 02:58:06 1857
Henderson 02:49:20 -28.0 Dark Down 55.4 26.9 Up 02:40:31 - 02:58:08 1785
Searchlight/Boulder City 02:49:21 -28.0 Dark Down 55.0 26.5 Up 02:40:33 - 02:58:10 1766
Calipatria 02:49:28 -27.1 Dark Down 52.6 25.4 Up 02:40:39 - 02:58:16 1764
Laughlin/Bullhead City 02:49:22 -28.2 Dark Down 54.8 26.2 Up 02:40:33 - 02:58:10 1728
Mohave Valley 02:49:23 -28.2 Dark Down 54.6 26.0 Up 02:40:34 - 02:58:11 1721
Blythe 02:49:26 -27.9 Dark Down 53.4 25.3 Up 02:40:38 - 02:58:15 1692
Lake Havasu City 02:49:24 -28.3 Dark Down 54.3 25.6 Up 02:40:35 - 02:58:12 1690
Kingman/Dolan Springs 02:49:22 -28.6 Dark Down 55.0 26.0 Up 02:40:33 - 02:58:10 1683
Parker 02:49:25 -28.3 Dark Down 54.0 25.4 Up 02:40:36 - 02:58:13 1678
Yuma 02:49:29 -27.7 Dark Down 52.6 24.7 Up 02:40:41 - 02:58:18 1673
Patrick 02:49:21 -28.8 Dark Down 55.3 26.0 Up 02:40:33 - 02:58:10 1672
DCO 02:49:22 -29.3 Dark Down 55.3 25.5 Up 02:40:33 - 02:58:10 1602
George/Scottsdale 02:49:25 -30.2 Dark Down 54.5 24.0 Up 02:40:37 - 02:58:14 1450
SwRI 02:49:04 -36.0 Dark Down 62.3 24.4 Up 02:40:15 - 02:57:52 1077
Niwot 02:49:03 -36.1 Dark Down 62.4 24.4 Up 02:40:15 - 02:57:52 1073

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 517717, (2023/12/15 02:48UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 52.77  74
37Del Cas      01:25:49.8 +60:14:06  2.7 11.82 112
PPM 014083     03:07:18.9 +64:03:27  5.8  0.88 124
PPM 013988     02:57:58.5 +63:16:49  8.5  0.57 123
PPM 014024     03:01:23.1 +63:20:37  8.7  0.19 124
517717         03:03:03.1 +63:18:36 15.1       124
Positions are for J2000

Event circumstances last updated at 2019/11/26 22:41:34 UT

Marc W. Buie, Southwest Research Institute

RECON