RECON: TNO occultation with 450265

Event between (450265) 03WU172 and star GA1160:02686653 with event index number of 172985

Geocentric closest approach at 2019/01/01 13:14:45 UTC

J2000 position of star is 07:03:51.0 +26:56:09
Equinox of date position of star is 07:04:59.8 +26:54:26
Stellar brightness G=16.4, use SENSEUP=128
Star is 125 degrees from the moon. Moon is 19% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 29.2 AU from the Sun and 28.2 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 4.2 arcsec/hr.
The 1-sigma error in the time of the event is 142 seconds.
The 1-sigma cross-track error in the shadow position is 1168 km.
The sky-plane scale is 20473.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=331.1 km assuming a 5% albedo -- 13.8 sec chord
Diameter=135.2 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 450265, (2019/01/01 13:15UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.6 +27:58:44  1.1  9.25 115
39 Gem         06:59:57.6 +26:03:16  6.5  1.42 126
PPM 096908     07:02:46.7 +26:32:42  8.4  0.62 125
PPM 096961     07:04:47.7 +26:58:34  9.1  0.09 125
450265         07:05:01.9 +26:54:23 16.4       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 13.1 km RECON observability=1.0 and success probability=8.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 13:14:10 -24.8 Dark Up 30.3 277.1 Up 13:01:52 - 13:26:27 3095
Oroville 13:14:07 -24.7 Dark Up 30.2 277.5 Up 13:01:50 - 13:26:25 3059
Tonasket 13:14:06 -24.7 Dark Up 30.1 277.6 Up 13:01:49 - 13:26:24 3044
Okanogan 13:14:06 -24.7 Dark Up 30.2 277.7 Up 13:01:48 - 13:26:23 3016
Brewster 13:14:05 -24.8 Dark Up 30.3 277.7 Up 13:01:47 - 13:26:22 2991
Niwot 13:13:32 -12.9 AT Up 18.3 290.2 Really Low 13:01:14 - 13:25:49 2986
Manson/Chelan 13:14:04 -25.0 Dark Up 30.5 277.6 Up 13:01:47 - 13:26:22 2964
Entiat 13:14:04 -25.1 Dark Up 30.5 277.7 Up 13:01:46 - 13:26:21 2946
Wenatchee 13:14:03 -25.1 Dark Up 30.6 277.7 Up 13:01:45 - 13:26:20 2925
Ellensburg 13:14:01 -25.2 Dark Up 30.7 277.8 Up 13:01:44 - 13:26:19 2889
Pasco 13:13:57 -24.1 Dark Up 29.6 279.2 Low 13:01:40 - 13:26:15 2888
PNWRO 13:13:57 -24.0 Dark Up 29.4 279.5 Low 13:01:39 - 13:26:14 2879
Yakima 13:14:00 -25.2 Dark Up 30.6 278.1 Up 13:01:42 - 13:26:17 2860
George/Umatilla 13:13:57 -24.2 Dark Up 29.7 279.2 Low 13:01:39 - 13:26:14 2856
Toppenish/White Swan 13:13:59 -25.0 Dark Up 30.5 278.3 Up 13:01:41 - 13:26:16 2851
Goldendale 13:13:57 -25.3 Dark Up 30.7 278.3 Up 13:01:40 - 13:26:15 2796
The Dalles 13:13:57 -25.5 Dark Up 30.9 278.2 Up 13:01:39 - 13:26:14 2767
Maupin 13:13:55 -25.4 Dark Up 30.8 278.5 Up 13:01:38 - 13:26:13 2741
Madras/Culver 13:13:54 -25.3 Dark Up 30.7 278.8 Up 13:01:36 - 13:26:11 2700
Redmond 13:13:52 -25.3 Dark Up 30.7 279.0 Up 13:01:35 - 13:26:10 2672
Sisters 13:13:53 -25.6 Dark Up 31.0 278.7 Up 13:01:35 - 13:26:10 2659
Bend 13:13:52 -25.4 Dark Up 30.8 279.0 Up 13:01:34 - 13:26:09 2651
Oregon Observatory 13:13:51 -25.4 Dark Up 30.9 279.1 Up 13:01:34 - 13:26:09 2633
La Pine/Gilchrist 13:13:50 -25.5 Dark Up 30.9 279.1 Up 13:01:33 - 13:26:08 2616
North Lake 13:13:49 -25.0 Dark Up 30.4 279.8 Up 13:01:31 - 13:26:06 2606
Paisley 13:13:46 -24.6 Dark Up 30.0 280.3 Up 13:01:29 - 13:26:04 2579
Lakeview 13:13:44 -24.4 Dark Up 29.8 280.7 Low 13:01:27 - 13:26:02 2548
Chiloquin 13:13:47 -25.6 Dark Up 31.0 279.6 Up 13:01:29 - 13:26:04 2519
Cedarville 13:13:42 -24.2 Dark Up 29.6 281.2 Low 13:01:25 - 13:26:00 2505
Klamath Falls 13:13:46 -25.5 Dark Up 30.9 279.8 Up 13:01:29 - 13:26:04 2496
Tulelake 13:13:45 -25.2 Dark Up 30.6 280.1 Up 13:01:27 - 13:26:02 2487
Fall River/Burney 13:13:42 -25.0 Dark Up 30.4 280.7 Up 13:01:24 - 13:25:59 2421
Susanville 13:13:39 -24.3 Dark Up 29.7 281.5 Low 13:01:22 - 13:25:57 2401
Gimple 13:13:38 -24.5 Dark Up 29.8 281.5 Low 13:01:21 - 13:25:56 2371
Greenville 13:13:39 -24.5 Dark Up 29.9 281.5 Low 13:01:21 - 13:25:56 2368
Reno 13:13:36 -23.6 Dark Up 28.9 282.4 Low 13:01:18 - 13:25:53 2367
Portola 13:13:37 -24.1 Dark Up 29.5 281.9 Low 13:01:19 - 13:25:54 2362
Tonopah 13:13:29 -21.3 Dark Up 26.6 284.6 Low 13:01:11 - 13:25:46 2356
Quincy 13:13:38 -24.5 Dark Up 29.8 281.6 Low 13:01:20 - 13:25:55 2353
Yerington 13:13:33 -23.0 Dark Up 28.3 283.1 Low 13:01:16 - 13:25:51 2350
Carson City 13:13:34 -23.5 Dark Up 28.8 282.6 Low 13:01:17 - 13:25:52 2340
Hawthorne 13:13:31 -22.5 Dark Up 27.8 283.6 Low 13:01:14 - 13:25:49 2335
Gardnerville 13:13:33 -23.4 Dark Up 28.7 282.8 Low 13:01:16 - 13:25:51 2323
Indian Springs 13:13:23 -19.8 Dark Up 25.1 286.0 Low 13:01:06 - 13:25:41 2303
DCO 13:13:17 -17.4 AT Up 22.7 287.8 Low 13:01:00 - 13:25:35 2293
Henderson 13:13:21 -19.1 Dark Up 24.4 286.6 Low 13:01:04 - 13:25:39 2290
Patrick 13:13:18 -18.1 Dark Up 23.3 287.4 Low 13:01:01 - 13:25:36 2287
Beatty 13:13:25 -20.7 Dark Up 26.0 285.3 Low 13:01:07 - 13:25:42 2284
Lee Vining 13:13:30 -22.7 Dark Up 28.0 283.6 Low 13:01:12 - 13:25:47 2271
Kingman/Dolan Springs 13:13:18 -18.1 Dark Up 23.4 287.4 Low 13:01:00 - 13:25:35 2262
Bishop 13:13:28 -22.0 Dark Up 27.3 284.3 Low 13:01:10 - 13:25:45 2253
Searchlight/Boulder City 13:13:19 -18.9 Dark Up 24.2 286.9 Low 13:01:02 - 13:25:37 2247
Laughlin/Bullhead City 13:13:18 -18.5 Dark Up 23.8 287.1 Low 13:01:01 - 13:25:36 2238
Mohave Valley 13:13:17 -18.5 Dark Up 23.7 287.3 Low 13:01:00 - 13:25:35 2217
Lone Pine 13:13:25 -21.6 Dark Up 26.9 284.8 Low 13:01:07 - 13:25:42 2207
Lake Havasu City 13:13:16 -18.2 Dark Up 23.4 287.5 Low 13:00:59 - 13:25:34 2196
Parker 13:13:15 -18.1 Dark Up 23.3 287.7 Low 13:00:57 - 13:25:32 2169
Blythe 13:13:14 -18.2 Dark Up 23.4 287.8 Low 13:00:56 - 13:25:31 2113
Yuma 13:13:11 -17.9 AT Up 23.1 288.1 Low 13:00:53 - 13:25:28 2037
Calipatria 13:13:13 -18.8 Dark Up 24.0 287.6 Low 13:00:56 - 13:25:31 2033
Idyllwild 13:13:15 -19.9 Dark Up 25.1 286.8 Low 13:00:58 - 13:25:33 2032
CPSLO 13:13:23 -23.4 Dark Up 28.6 284.2 Low 13:01:06 - 13:25:41 1993
Wildwood 13:13:18 -21.5 Dark Up 26.7 285.8 Low 13:01:00 - 13:25:35 1981

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 450265, (2019/01/01 13:15UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1  9.25 115
39 Gem         06:58:47.1 +26:04:53  6.5  1.42 126
PPM 096908     07:01:36.0 +26:34:24  8.4  0.62 125
PPM 096961     07:03:36.8 +27:00:20  9.1  0.09 125
450265         07:03:51.0 +26:56:09 16.4       125
Positions are for J2000

Event circumstances last updated at 2018/06/11 19:30:31 UT

Marc W. Buie, Southwest Research Institute

RECON