RECON: TNO occultation with 470309

Event between (470309) 07JK43 and star UC4-457-064810 with event index number of 147111

Geocentric closest approach at 2018/05/09 05:16:21 UTC

J2000 position of star is 17:27:02.9 +01:12:24
Equinox of date position of star is 17:27:53.7 +01:11:37
Stellar brightness R=15.7
Star is 73 degrees from the moon. Moon is 39% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 24.3 AU from the Sun and 23.5 AU from the Earth.
The TNO is moving 22.1 km/sec on the sky relative to the star, or, 4.7 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is 998 km.
The sky-plane scale is 17028.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.0
Diameter=239.9 km assuming a 5% albedo -- 10.9 sec chord
Diameter=97.9 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 470309, (2018/05/09 05:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.1 -26:28:16  0.9 30.94  81
60Bet Oph      17:44:22.8 +04:33:39  2.8  5.30  70
PPM 164059     17:29:45.9 +00:19:01  5.5  0.98  72
PPM 164003     17:27:27.7 +00:48:27  8.3  0.41  73
PPM 163978     17:26:44.0 +01:16:20 10.4  0.32  73
470309         17:27:58.8 +01:11:32 15.7        73
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)
Oroville 05:20:54 -15.5 AT Down 11.4 101.4 Really Low 05:16:27 - 05:25:22 3972
Tonasket 05:20:54 -15.7 AT Down 11.4 101.4 Really Low 05:16:27 - 05:25:22 3947
Okanogan 05:20:55 -15.9 AT Down 11.4 101.2 Really Low 05:16:27 - 05:25:22 3910
Brewster 05:20:56 -16.0 AT Down 11.3 101.0 Really Low 05:16:28 - 05:25:23 3879
Manson/Chelan 05:20:56 -16.0 AT Down 11.1 100.7 Really Low 05:16:29 - 05:25:24 3853
Entiat 05:20:57 -16.2 AT Down 11.1 100.6 Really Low 05:16:29 - 05:25:24 3829
Wenatchee 05:20:57 -16.3 AT Down 11.1 100.4 Really Low 05:16:29 - 05:25:24 3801
Ellensburg 05:20:58 -16.6 AT Down 11.0 100.2 Really Low 05:16:30 - 05:25:25 3754
Yakima 05:20:58 -16.9 AT Down 11.1 100.1 Really Low 05:16:30 - 05:25:25 3711
Pasco 05:20:57 -17.7 AT Down 12.1 101.1 Really Low 05:16:29 - 05:25:24 3689
Toppenish/White Swan 05:20:58 -17.1 AT Down 11.2 100.2 Really Low 05:16:30 - 05:25:25 3689
PNWRO 05:20:57 -18.0 Dark Down 12.3 101.2 Really Low 05:16:30 - 05:25:25 3665
George/Umatilla 05:20:58 -17.9 AT Down 12.0 100.9 Really Low 05:16:30 - 05:25:25 3651
Goldendale 05:20:59 -17.3 AT Down 11.0 99.8 Really Low 05:16:31 - 05:25:26 3625
The Dalles 05:20:59 -17.4 AT Down 10.8 99.5 Really Low 05:16:32 - 05:25:27 3598
Maupin 05:21:00 -17.7 AT Down 11.0 99.5 Really Low 05:16:32 - 05:25:27 3553
Madras/Culver 05:21:00 -18.1 Dark Down 11.0 99.3 Really Low 05:16:33 - 05:25:28 3494
Redmond 05:21:00 -18.4 Dark Down 11.0 99.2 Really Low 05:16:33 - 05:25:28 3455
Sisters 05:21:01 -18.2 Dark Down 10.8 98.9 Really Low 05:16:33 - 05:25:28 3453
Bend 05:21:01 -18.5 Dark Down 11.0 99.1 Really Low 05:16:33 - 05:25:28 3430
Oregon Observatory 05:21:01 -18.5 Dark Down 10.9 99.0 Really Low 05:16:34 - 05:25:29 3410
La Pine/Gilchrist 05:21:01 -18.7 Dark Down 10.9 98.9 Really Low 05:16:34 - 05:25:29 3387
North Lake 05:21:01 -19.3 Dark Down 11.4 99.2 Really Low 05:16:34 - 05:25:29 3346
Paisley 05:21:01 -19.9 Dark Down 11.7 99.4 Really Low 05:16:34 - 05:25:29 3290
Niwot 05:20:43 -28.3 Dark Down 23.5 109.6 Low 05:16:15 - 05:25:10 3268
Chiloquin 05:21:02 -19.3 Dark Down 10.8 98.4 Really Low 05:16:35 - 05:25:30 3263
Lakeview 05:21:01 -20.4 Dark Down 12.0 99.4 Really Low 05:16:34 - 05:25:29 3237
Klamath Falls 05:21:02 -19.6 Dark Down 10.9 98.4 Really Low 05:16:35 - 05:25:30 3226
Tulelake 05:21:02 -20.0 Dark Down 11.2 98.6 Really Low 05:16:35 - 05:25:30 3200
Cedarville 05:21:02 -20.9 Dark Down 12.2 99.4 Really Low 05:16:34 - 05:25:29 3167
Fall River/Burney 05:21:03 -20.7 Dark Down 11.4 98.4 Really Low 05:16:35 - 05:25:30 3101
Susanville 05:21:02 -21.6 Dark Down 12.0 98.8 Really Low 05:16:35 - 05:25:30 3040
Greenville 05:21:03 -21.6 Dark Down 11.8 98.6 Really Low 05:16:35 - 05:25:30 3007
Quincy 05:21:03 -21.8 Dark Down 11.9 98.5 Really Low 05:16:35 - 05:25:30 2985
Portola 05:21:02 -22.1 Dark Down 12.3 98.8 Really Low 05:16:35 - 05:25:30 2976
Reno 05:21:02 -22.6 Dark Down 12.8 99.2 Really Low 05:16:34 - 05:25:29 2954
Carson City 05:21:02 -22.9 Dark Down 12.9 99.1 Really Low 05:16:35 - 05:25:30 2915
Yerington 05:21:02 -23.4 Dark Down 13.4 99.5 Really Low 05:16:34 - 05:25:29 2901
Gardnerville 05:21:02 -23.1 Dark Down 12.9 99.1 Really Low 05:16:34 - 05:25:29 2889
Hawthorne 05:21:01 -24.0 Dark Down 13.9 99.7 Really Low 05:16:34 - 05:25:29 2857
Tonopah 05:20:59 -25.1 Dark Down 15.0 100.5 Really Low 05:16:32 - 05:25:27 2825
Lee Vining 05:21:02 -24.2 Dark Down 13.6 99.3 Really Low 05:16:34 - 05:25:29 2789
Bishop 05:21:01 -25.0 Dark Down 14.3 99.6 Really Low 05:16:34 - 05:25:29 2733
Beatty 05:21:00 -26.2 Dark Down 15.6 100.5 Really Low 05:16:32 - 05:25:27 2705
Indian Springs 05:20:58 -27.0 Dark Down 16.5 101.1 Really Low 05:16:30 - 05:25:25 2686
Lone Pine 05:21:01 -25.8 Dark Down 14.6 99.6 Really Low 05:16:34 - 05:25:29 2654
Henderson 05:20:57 -27.8 Dark Down 17.2 101.4 Really Low 05:16:30 - 05:25:25 2639
Patrick 05:20:56 -28.8 Dark Down 18.2 101.9 Really Low 05:16:28 - 05:25:23 2589
Searchlight/Boulder City 05:20:58 -28.2 Dark Down 17.3 101.3 Really Low 05:16:30 - 05:25:25 2577
DCO 05:20:55 -29.4 Dark Down 18.8 102.3 Really Low 05:16:27 - 05:25:22 2568
Kingman/Dolan Springs 05:20:55 -28.9 Dark Down 18.1 101.7 Really Low 05:16:28 - 05:25:23 2562
Laughlin/Bullhead City 05:20:57 -28.6 Dark Down 17.7 101.4 Really Low 05:16:29 - 05:25:24 2550
Mohave Valley 05:20:57 -28.9 Dark Down 17.7 101.3 Really Low 05:16:29 - 05:25:24 2521
Lake Havasu City 05:20:57 -29.3 Dark Down 18.0 101.3 Really Low 05:16:29 - 05:25:24 2481
CPSLO 05:21:04 -25.4 Dark Down 12.8 97.7 Really Low 05:16:36 - 05:25:31 2479
Parker 05:20:55 -29.6 Dark Down 18.1 101.2 Really Low 05:16:28 - 05:25:23 2444
Blythe 05:20:57 -29.9 Dark Down 18.0 100.9 Really Low 05:16:29 - 05:25:24 2381
Wildwood 05:21:02 -27.4 Dark Down 14.6 98.6 Really Low 05:16:34 - 05:25:29 2372
Idyllwild 05:20:59 -28.7 Dark Down 16.2 99.7 Really Low 05:16:31 - 05:25:26 2360
Calipatria 05:20:58 -29.8 Dark Down 17.3 100.2 Really Low 05:16:30 - 05:25:25 2312
Yuma 05:20:56 -30.6 Dark Down 18.1 100.6 Really Low 05:16:28 - 05:25:23 2280

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 470309, (2018/05/09 05:16UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 30.94  81
60Bet Oph      17:43:28.3 +04:34:05  2.8  5.30  70
PPM 164059     17:28:49.6 +00:19:50  5.5  0.98  72
PPM 164003     17:26:31.6 +00:49:19  8.3  0.41  73
PPM 163978     17:25:48.1 +01:17:14 10.4  0.32  73
470309         17:27:02.9 +01:12:24 15.7        73
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:25:01 UT

Marc W. Buie, Southwest Research Institute

RECON