RECON: TNO occultation with 517717

Event between (517717) 15KZ120 and star GA1440:02740820 with event index number of 1436095

Geocentric closest approach at 2024/12/22 11:35:30 UTC

J2000 position of star is 03:32:37.6 +54:32:32
Equinox of date position of star is 03:34:08.8 +54:36:30
Stellar brightness G=15.6, use SENSEUP=128
Star is 107 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 13.6 AU from the Sun and 12.8 AU from the Earth.
The TNO is moving 30.7 km/sec on the sky relative to the star, or, 11.9 arcsec/hr.
The 1-sigma error in the time of the event is 145 seconds.
The 1-sigma cross-track error in the shadow position is 4129 km.
The sky-plane scale is 9292.8 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=60.3 km assuming a 5% albedo -- 2.0 sec chord
Diameter=24.6 km assuming a 30% albedo -- 0.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 517717, (2024/12/22 11:36UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.7 +27:57:50  1.1 52.13  63
Mirphak        03:26:07.2 +49:56:53  1.8  4.85 110
PPM 028555     03:35:34.2 +55:03:27  5.9  0.46 107
PPM 028543     03:34:39.3 +54:20:17  8.4  0.29 107
PPM 028537     03:34:17.3 +54:34:27  9.0  0.06 107
517717         03:34:32.1 +54:37:30 15.6       107
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 15.1 km RECON observability=1.0 and success probability=8.9%
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 11:32:50 -40.5 Dark Up 37.7 312.9 Up 11:20:17 - 11:45:23 -905
Kelowna 11:32:50 -40.6 Dark Up 37.5 313.0 Up 11:20:17 - 11:45:23 -946
Summerland 11:32:50 -40.8 Dark Up 37.4 313.1 Up 11:20:17 - 11:45:23 -978
Penticton 11:32:50 -40.8 Dark Up 37.3 313.2 Up 11:20:17 - 11:45:23 -979
Oliver 11:32:50 -40.8 Dark Up 37.1 313.4 Up 11:20:17 - 11:45:23 -1011
Niwot 11:32:24 -31.1 Dark Up 23.6 322.6 Low 11:19:51 - 11:44:57 -1017
Anarchist Mountain Observatory 11:32:49 -40.7 Dark Up 36.9 313.6 Up 11:20:16 - 11:45:22 -1018
SwRI 11:32:24 -31.2 Dark Up 23.6 322.6 Low 11:19:51 - 11:44:57 -1031
Tonasket 11:32:49 -40.8 Dark Up 36.7 313.7 Up 11:20:16 - 11:45:22 -1049
Okanogan 11:32:49 -41.0 Dark Up 36.5 313.8 Up 11:20:16 - 11:45:22 -1085
Brewster 11:32:49 -41.2 Dark Up 36.5 313.9 Up 11:20:16 - 11:45:22 -1118
Manson/Chelan 11:32:50 -41.5 Dark Up 36.5 313.8 Up 11:20:17 - 11:45:23 -1152
Entiat 11:32:50 -41.6 Dark Up 36.4 313.9 Up 11:20:17 - 11:45:23 -1174
Wenatchee 11:32:50 -41.7 Dark Up 36.2 314.0 Up 11:20:17 - 11:45:23 -1201
Victoria 11:32:55 -43.4 Dark Up 38.5 312.2 Up 11:20:22 - 11:45:28 -1222
Ellensburg 11:32:50 -41.9 Dark Up 36.1 314.2 Up 11:20:17 - 11:45:23 -1247
Pasco 11:32:47 -41.1 Dark Up 34.8 315.1 Up 11:20:14 - 11:45:20 -1253
PNWRO 11:32:47 -40.9 Dark Up 34.6 315.3 Up 11:20:14 - 11:45:20 -1265
Yakima 11:32:49 -42.0 Dark Up 35.8 314.4 Up 11:20:16 - 11:45:22 -1284
Toppenish/White Swan 11:32:49 -41.9 Dark Up 35.6 314.5 Up 11:20:16 - 11:45:22 -1297
Goldendale 11:32:49 -42.3 Dark Up 35.4 314.7 Up 11:20:16 - 11:45:22 -1364
The Dalles 11:32:50 -42.6 Dark Up 35.4 314.6 Up 11:20:17 - 11:45:23 -1399
Maupin 11:32:49 -42.6 Dark Up 35.0 314.9 Up 11:20:16 - 11:45:22 -1432
Redmond 11:32:49 -42.8 Dark Up 34.5 315.3 Up 11:20:16 - 11:45:22 -1517
Sisters 11:32:50 -43.0 Dark Up 34.7 315.1 Up 11:20:17 - 11:45:23 -1532
Bend 11:32:49 -42.9 Dark Up 34.4 315.3 Up 11:20:16 - 11:45:22 -1542
Oregon Observatory 11:32:49 -43.0 Dark Up 34.3 315.4 Up 11:20:16 - 11:45:22 -1563
La Pine/Gilchrist 11:32:49 -43.1 Dark Up 34.2 315.5 Up 11:20:16 - 11:45:22 -1584
North Lake 11:32:48 -42.7 Dark Up 33.6 315.9 Up 11:20:15 - 11:45:21 -1596
Paisley 11:32:47 -42.5 Dark Up 33.0 316.2 Up 11:20:14 - 11:45:20 -1629
Lakeview 11:32:47 -42.4 Dark Up 32.5 316.5 Up 11:20:14 - 11:45:20 -1664
Cedarville 11:32:46 -42.4 Dark Up 32.0 316.9 Up 11:20:13 - 11:45:19 -1713
Klamath Falls 11:32:49 -43.5 Dark Up 33.3 316.0 Up 11:20:16 - 11:45:22 -1724
Fall River/Burney 11:32:48 -43.3 Dark Up 32.3 316.7 Up 11:20:15 - 11:45:21 -1810
Susanville 11:32:46 -42.8 Dark Up 31.4 317.2 Up 11:20:13 - 11:45:19 -1831
Tonopah 11:32:40 -40.3 Dark Up 27.9 319.1 Low 11:20:07 - 11:45:13 -1862
Gimple 11:32:47 -43.0 Dark Up 31.3 317.2 Up 11:20:14 - 11:45:20 -1865
Reno 11:32:45 -42.2 Dark Up 30.3 317.8 Up 11:20:12 - 11:45:18 -1867
Greenville 11:32:47 -43.1 Dark Up 31.4 317.2 Up 11:20:14 - 11:45:20 -1869
Portola 11:32:46 -42.7 Dark Up 30.9 317.5 Up 11:20:13 - 11:45:19 -1875
DCO 11:32:33 -36.9 Dark Up 23.6 321.2 Low 11:20:00 - 11:45:06 -1875
Yerington 11:32:43 -41.8 Dark Up 29.6 318.2 Low 11:20:10 - 11:45:16 -1882
Quincy 11:32:47 -43.1 Dark Up 31.2 317.3 Up 11:20:14 - 11:45:20 -1886
Patrick 11:32:34 -37.5 Dark Up 24.2 320.9 Low 11:20:01 - 11:45:07 -1892
Hawthorne 11:32:42 -41.4 Dark Up 29.0 318.5 Low 11:20:09 - 11:45:15 -1895
Carson City 11:32:44 -42.2 Dark Up 30.1 317.9 Up 11:20:11 - 11:45:17 -1896
Indian Springs 11:32:37 -39.0 Dark Up 26.0 320.1 Low 11:20:04 - 11:45:10 -1901
George/Scottsdale 11:32:31 -35.7 Dark Up 21.8 322.0 Low 11:19:58 - 11:45:04 -1905
Henderson 11:32:36 -38.5 Dark Up 25.2 320.4 Low 11:20:03 - 11:45:09 -1905
Gardnerville 11:32:44 -42.2 Dark Up 29.9 318.0 Low 11:20:11 - 11:45:17 -1914
Kingman/Dolan Springs 11:32:34 -37.7 Dark Up 24.1 320.9 Low 11:20:01 - 11:45:07 -1920
Beatty 11:32:39 -39.9 Dark Up 26.8 319.6 Low 11:20:06 - 11:45:12 -1932
Searchlight/Boulder City 11:32:36 -38.4 Dark Up 24.7 320.6 Low 11:20:03 - 11:45:09 -1948
Laughlin/Bullhead City 11:32:35 -38.1 Dark Up 24.3 320.8 Low 11:20:02 - 11:45:08 -1951
Lee Vining 11:32:43 -41.8 Dark Up 28.8 318.6 Low 11:20:10 - 11:45:16 -1966
Mohave Valley 11:32:35 -38.1 Dark Up 24.1 320.9 Low 11:20:02 - 11:45:08 -1972
Bishop 11:32:42 -41.2 Dark Up 28.0 319.0 Low 11:20:09 - 11:45:15 -1979
Lake Havasu City 11:32:34 -37.8 Dark Up 23.7 321.1 Low 11:20:01 - 11:45:07 -1990
Parker 11:32:34 -37.8 Dark Up 23.4 321.2 Low 11:20:01 - 11:45:07 -2015
Blythe 11:32:35 -38.0 Dark Up 23.1 321.2 Low 11:20:02 - 11:45:08 -2073
Yuma 11:32:35 -37.9 Dark Up 22.4 321.5 Low 11:20:02 - 11:45:08 -2147
Calipatria 11:32:36 -38.7 Dark Up 23.2 321.1 Low 11:20:03 - 11:45:09 -2165
Idyllwild 11:32:38 -39.7 Dark Up 24.3 320.6 Low 11:20:05 - 11:45:11 -2184
Wildwood 11:32:41 -41.3 Dark Up 25.6 320.0 Low 11:20:08 - 11:45:14 -2256
CPSLO 11:32:45 -43.0 Dark Up 27.6 319.1 Low 11:20:12 - 11:45:18 -2262

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, (2024/12/22 11:36UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.0 +28:01:33  1.1 52.13  63
Mirphak        03:24:19.4 +49:51:40  1.8  4.85 110
PPM 028555     03:33:39.0 +54:58:30  5.9  0.46 107
PPM 028543     03:32:45.2 +54:15:18  8.4  0.29 107
PPM 028537     03:32:22.9 +54:29:28  9.0  0.06 107
517717         03:32:37.6 +54:32:32 15.6       107
Positions are for J2000

Event circumstances last updated at 2019/11/26 22:48:29 UT

Marc W. Buie, Southwest Research Institute

RECON