RECON: TNO occultation with 470596

Event between (470596) 08NW4 and star UC4-446-134462 with event index number of 146635

Geocentric closest approach at 2017/08/07 11:28:12 UTC

J2000 position of star is 21:14:58.3 -00:52:43
Equinox of date position of star is 21:15:49.8 -00:48:31
Stellar brightness R=15.2
Star is 16 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 36.6 AU from the Sun and 35.6 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 186 seconds.
The 1-sigma cross-track error in the shadow position is 3527 km.
The sky-plane scale is 25811.2 km/arcsec.

The TNO has an absolute magnitude Hv=5.4
Diameter=501.2 km assuming a 5% albedo -- 20.7 sec chord
Diameter=204.6 km assuming a 30% albedo -- 8.4 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 470596, (2017/08/07 11:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:37.2 -29:31:43  1.2 37.72  31
Tarazed        19:47:05.8 +10:39:26  2.7 24.87  32
21 Aqr         21:26:12.0 -03:28:49  5.5  3.72  14
PPM 181223     21:15:35.5 -00:45:30  7.7  0.09  16
PPM 181224     21:15:35.5 -00:45:51 11.0  0.08  16
470596         21:15:52.7 -00:48:17 15.2        16
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 4.8 sigma about the mid-time.
The median site spacing is 24.4 km RECON observability=0.7 and success probability=8.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:25:22 -10.9 CT Up 24.6 236.5 Low 11:10:22 - 11:40:22 3461
Tonasket 11:25:22 -11.1 CT Up 24.7 236.6 Low 11:10:22 - 11:40:22 3441
Okanogan 11:25:21 -11.4 CT Up 25.0 236.6 Low 11:10:21 - 11:40:21 3414
Brewster 11:25:21 -11.7 CT Up 25.3 236.5 Low 11:10:21 - 11:40:21 3393
Manson/Chelan 11:25:21 -12.0 CT Up 25.6 236.3 Low 11:10:21 - 11:40:21 3380
Entiat 11:25:21 -12.2 AT Up 25.8 236.3 Low 11:10:21 - 11:40:21 3362
Wenatchee 11:25:21 -12.4 AT Up 25.9 236.3 Low 11:10:21 - 11:40:21 3341
Ellensburg 11:25:21 -12.8 AT Up 26.3 236.3 Low 11:10:21 - 11:40:21 3308
Yakima 11:25:20 -13.1 AT Up 26.5 236.4 Low 11:10:20 - 11:40:20 3273
Toppenish/White Swan 11:25:20 -13.1 AT Up 26.6 236.7 Low 11:10:20 - 11:40:20 3252
Pasco 11:25:17 -12.5 AT Up 25.9 237.9 Low 11:10:17 - 11:40:17 3227
Goldendale 11:25:20 -13.7 AT Up 27.1 236.5 Low 11:10:20 - 11:40:20 3209
PNWRO 11:25:16 -12.6 AT Up 25.9 238.2 Low 11:10:16 - 11:40:16 3203
George/Umatilla 11:25:16 -12.9 AT Up 26.2 237.8 Low 11:10:16 - 11:40:16 3200
The Dalles 11:25:20 -14.1 AT Up 27.5 236.3 Low 11:10:20 - 11:40:20 3194
Maupin 11:25:19 -14.3 AT Up 27.6 236.6 Low 11:10:19 - 11:40:19 3156
Madras/Culver 11:25:18 -14.7 AT Up 28.0 236.8 Low 11:10:18 - 11:40:18 3108
Sisters 11:25:19 -15.1 AT Up 28.4 236.5 Low 11:10:19 - 11:40:19 3084
Redmond 11:25:18 -14.9 AT Up 28.2 236.9 Low 11:10:18 - 11:40:18 3077
Bend 11:25:18 -15.1 AT Up 28.4 236.8 Low 11:10:18 - 11:40:18 3059
Oregon Observatory 11:25:18 -15.3 AT Up 28.6 236.8 Low 11:10:18 - 11:40:18 3046
La Pine/Gilchrist 11:25:17 -15.5 AT Up 28.7 236.8 Low 11:10:17 - 11:40:17 3028
North Lake 11:25:16 -15.5 AT Up 28.6 237.6 Low 11:10:16 - 11:40:16 2981
Chiloquin 11:25:16 -16.4 AT Up 29.5 237.0 Low 11:10:16 - 11:40:16 2932
Paisley 11:25:13 -15.6 AT Up 28.7 238.1 Low 11:10:13 - 11:40:13 2927
Klamath Falls 11:25:16 -16.6 AT Up 29.7 237.3 Low 11:10:16 - 11:40:16 2900
Lakeview 11:25:12 -15.9 AT Up 28.8 238.5 Low 11:10:12 - 11:40:12 2878
Tulelake 11:25:15 -16.6 AT Up 29.6 237.7 Low 11:10:15 - 11:40:15 2871
Cedarville 11:25:11 -16.2 AT Up 29.0 239.0 Low 11:10:11 - 11:40:11 2816
Fall River/Burney 11:25:13 -17.2 AT Up 30.1 238.2 Up 11:10:13 - 11:40:13 2786
Susanville 11:25:11 -17.2 AT Up 29.9 239.1 Low 11:10:11 - 11:40:11 2718
Greenville 11:25:11 -17.5 AT Up 30.3 239.0 Up 11:10:11 - 11:40:11 2696
Quincy 11:25:11 -17.7 AT Up 30.4 239.1 Up 11:10:11 - 11:40:11 2677
Portola 11:25:09 -17.5 AT Up 30.1 239.6 Up 11:10:09 - 11:40:09 2659
Reno 11:25:07 -17.3 AT Up 29.8 240.3 Low 11:10:07 - 11:40:07 2626
Carson City 11:25:07 -17.5 AT Up 30.0 240.5 Low 11:10:07 - 11:40:07 2592
Gardnerville 11:25:06 -17.6 AT Up 30.1 240.6 Up 11:10:06 - 11:40:06 2568
Yerington 11:25:05 -17.2 AT Up 29.6 241.1 Low 11:10:05 - 11:40:05 2565
Niwot 11:24:40 -7.7 CT Up 19.4 251.5 Really Low 11:09:40 - 11:39:40 2518
Hawthorne 11:25:03 -17.2 AT Up 29.5 241.8 Low 11:10:03 - 11:40:03 2514
Lee Vining 11:25:04 -17.9 AT Up 30.1 241.6 Up 11:10:04 - 11:40:04 2467
Tonopah 11:24:59 -16.6 AT Up 28.8 243.1 Low 11:09:59 - 11:39:59 2452
Bishop 11:25:01 -17.8 AT Up 29.9 242.5 Low 11:10:01 - 11:40:01 2399
Beatty 11:24:57 -17.0 AT Up 28.9 244.1 Low 11:09:57 - 11:39:57 2333
Lone Pine 11:24:59 -18.0 Dark Up 30.0 243.2 Up 11:09:59 - 11:39:59 2321
Indian Springs 11:24:54 -16.5 AT Up 28.3 245.1 Low 11:09:54 - 11:39:54 2288
CPSLO 11:25:04 -20.5 Dark Up 32.5 241.8 Up 11:10:04 - 11:40:04 2229
Henderson 11:24:52 -16.4 AT Up 28.0 245.9 Low 11:09:52 - 11:39:52 2227
Searchlight/Boulder City 11:24:51 -16.7 AT Up 28.2 246.2 Low 11:09:51 - 11:39:51 2170
Patrick 11:24:49 -16.0 AT Up 27.5 247.0 Low 11:09:49 - 11:39:49 2152
Laughlin/Bullhead City 11:24:49 -16.6 AT Up 28.1 246.6 Low 11:09:49 - 11:39:49 2136
Kingman/Dolan Springs 11:24:48 -16.3 AT Up 27.7 247.0 Low 11:09:48 - 11:39:48 2132
DCO 11:24:47 -15.7 AT Up 27.1 247.7 Low 11:09:47 - 11:39:47 2113
Mohave Valley 11:24:49 -16.8 AT Up 28.2 246.7 Low 11:09:49 - 11:39:49 2108
Wildwood 11:24:58 -19.9 Dark Up 31.5 244.1 Up 11:09:58 - 11:39:58 2081
Lake Havasu City 11:24:48 -16.8 AT Up 28.2 247.1 Low 11:09:48 - 11:39:48 2066
Parker 11:24:48 -17.0 AT Up 28.3 247.3 Low 11:09:48 - 11:39:48 2030
Idyllwild 11:24:53 -18.9 Dark Up 30.3 245.7 Up 11:09:53 - 11:39:53 2021
Blythe 11:24:48 -17.5 AT Up 28.7 247.3 Low 11:09:48 - 11:39:48 1981
Calipatria 11:24:49 -18.4 Dark Up 29.6 246.9 Low 11:09:49 - 11:39:49 1944
Yuma 11:24:47 -18.1 Dark Up 29.1 247.8 Low 11:09:47 - 11:39:47 1889

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 470596, (2017/08/07 11:28UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 37.72  31
Tarazed        19:46:15.6 +10:36:48  2.7 24.87  32
21 Aqr         21:25:17.0 -03:33:25  5.5  3.72  14
PPM 181223     21:14:41.1 -00:49:55  7.7  0.09  16
PPM 181224     21:14:41.2 -00:50:17 11.0  0.08  16
470596         21:14:58.3 -00:52:43 15.2        16
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:15:26 UT

Marc W. Buie, Southwest Research Institute

RECON