RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star GA1360:03276701 with event index number of 233100

Geocentric closest approach at 2019/12/22 12:05:56 UTC

J2000 position of star is 05:31:12.4 +46:34:18
Equinox of date position of star is 05:32:34.9 +46:35:03
Stellar brightness G=16.2, use SENSEUP=128
Star is 131 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 15.4 AU from the Sun and 14.5 AU from the Earth.
The TNO is moving 22.6 km/sec on the sky relative to the star, or, 7.7 arcsec/hr.
The 1-sigma error in the time of the event is 310 seconds.
The 1-sigma cross-track error in the shadow position is 2246 km.
The sky-plane scale is 10549.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.6
Diameter=114.8 km assuming a 5% albedo -- 5.1 sec chord
Diameter=46.9 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 341275, (2019/12/22 12:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:32.2 +27:58:35  1.1 32.10 110
34Bet Aur      06:00:59.7 +44:56:50  1.9  5.20 128
PPM 048270     05:37:46.6 +47:43:35  6.1  1.43 130
PPM 048157     05:31:24.2 +46:35:09  8.4  0.22 132
341275         05:32:41.8 +46:35:07 16.2       131
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 2.9 sigma about the mid-time.
The median site spacing is 15.8 km RECON observability=1.0 and success probability=13.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 12:02:47 -35.9 Dark Up 45.4 293.9 Up 11:47:47 - 12:17:47 -1351
Oroville 12:02:46 -35.9 Dark Up 45.1 294.5 Up 11:47:46 - 12:17:46 -1399
Tonasket 12:02:45 -35.9 Dark Up 45.0 294.7 Up 11:47:45 - 12:17:45 -1419
Niwot 12:02:04 -25.4 Dark Up 31.9 306.4 Up 11:47:04 - 12:17:04 -1427
Okanogan 12:02:45 -36.0 Dark Up 44.9 295.0 Up 11:47:45 - 12:17:45 -1455
Brewster 12:02:44 -36.2 Dark Up 44.9 295.1 Up 11:47:44 - 12:17:44 -1488
Manson/Chelan 12:02:44 -36.4 Dark Up 45.1 295.1 Up 11:47:44 - 12:17:44 -1522
Entiat 12:02:44 -36.5 Dark Up 45.0 295.3 Up 11:47:44 - 12:17:44 -1545
Wenatchee 12:02:43 -36.6 Dark Up 45.0 295.5 Up 11:47:43 - 12:17:43 -1572
Ellensburg 12:02:43 -36.8 Dark Up 44.9 295.8 Up 11:47:43 - 12:17:43 -1619
Pasco 12:02:39 -35.9 Dark Up 43.7 297.0 Up 11:47:39 - 12:17:39 -1623
PNWRO 12:02:38 -35.7 Dark Up 43.5 297.3 Up 11:47:38 - 12:17:38 -1635
Yakima 12:02:42 -36.8 Dark Up 44.8 296.1 Up 11:47:42 - 12:17:42 -1656
George/Umatilla 12:02:38 -36.0 Dark Up 43.7 297.2 Up 11:47:38 - 12:17:38 -1662
Toppenish/White Swan 12:02:41 -36.7 Dark Up 44.6 296.4 Up 11:47:41 - 12:17:41 -1668
Goldendale 12:02:40 -37.1 Dark Up 44.6 296.7 Up 11:47:40 - 12:17:40 -1737
The Dalles 12:02:40 -37.3 Dark Up 44.7 296.7 Up 11:47:40 - 12:17:40 -1773
Maupin 12:02:39 -37.3 Dark Up 44.4 297.1 Up 11:47:39 - 12:17:39 -1806
Madras/Culver 12:02:38 -37.3 Dark Up 44.2 297.6 Up 11:47:38 - 12:17:38 -1858
Redmond 12:02:37 -37.4 Dark Up 44.1 297.9 Up 11:47:37 - 12:17:37 -1893
Sisters 12:02:38 -37.7 Dark Up 44.4 297.7 Up 11:47:38 - 12:17:38 -1909
Bend 12:02:37 -37.5 Dark Up 44.1 298.0 Up 11:47:37 - 12:17:37 -1919
Oregon Observatory 12:02:37 -37.6 Dark Up 44.1 298.1 Up 11:47:37 - 12:17:37 -1940
La Pine/Gilchrist 12:02:37 -37.7 Dark Up 44.0 298.3 Up 11:47:37 - 12:17:37 -1962
North Lake 12:02:35 -37.2 Dark Up 43.4 298.8 Up 11:47:35 - 12:17:35 -1974
Paisley 12:02:33 -37.0 Dark Up 42.9 299.4 Up 11:47:33 - 12:17:33 -2008
Lakeview 12:02:32 -36.9 Dark Up 42.6 299.9 Up 11:47:32 - 12:17:32 -2045
Chiloquin 12:02:35 -38.0 Dark Up 43.7 299.1 Up 11:47:35 - 12:17:35 -2080
Cedarville 12:02:30 -36.7 Dark Up 42.1 300.5 Up 11:47:30 - 12:17:30 -2096
Klamath Falls 12:02:34 -37.9 Dark Up 43.5 299.4 Up 11:47:34 - 12:17:34 -2108
Tulelake 12:02:33 -37.7 Dark Up 43.2 299.7 Up 11:47:33 - 12:17:33 -2118
Fall River/Burney 12:02:31 -37.7 Dark Up 42.7 300.5 Up 11:47:31 - 12:17:31 -2198
Susanville 12:02:28 -37.1 Dark Up 41.9 301.2 Up 11:47:28 - 12:17:28 -2221
Gimple 12:02:28 -37.3 Dark Up 41.9 301.3 Up 11:47:28 - 12:17:28 -2256
Reno 12:02:25 -36.5 Dark Up 40.9 302.1 Up 11:47:25 - 12:17:25 -2259
Greenville 12:02:28 -37.3 Dark Up 41.9 301.3 Up 11:47:28 - 12:17:28 -2260
Tonopah 12:02:17 -34.4 Dark Up 38.4 303.8 Up 11:47:17 - 12:17:17 -2262
Portola 12:02:27 -37.0 Dark Up 41.4 301.7 Up 11:47:27 - 12:17:27 -2267
Yerington 12:02:22 -35.9 Dark Up 40.2 302.6 Up 11:47:22 - 12:17:22 -2277
Quincy 12:02:28 -37.3 Dark Up 41.8 301.5 Up 11:47:28 - 12:17:28 -2278
Carson City 12:02:24 -36.4 Dark Up 40.7 302.3 Up 11:47:24 - 12:17:24 -2291
Hawthorne 12:02:21 -35.5 Dark Up 39.6 303.1 Up 11:47:21 - 12:17:21 -2292
DCO 12:02:04 -30.8 Dark Up 34.1 306.6 Up 11:47:04 - 12:17:04 -2301
Gardnerville 12:02:24 -36.4 Dark Up 40.5 302.5 Up 11:47:24 - 12:17:24 -2311
Indian Springs 12:02:11 -33.0 Dark Up 36.6 305.1 Up 11:47:11 - 12:17:11 -2312
Patrick 12:02:06 -31.5 Dark Up 34.7 306.3 Up 11:47:06 - 12:17:06 -2314
Henderson 12:02:09 -32.4 Dark Up 35.8 305.6 Up 11:47:09 - 12:17:09 -2321
Beatty 12:02:14 -33.9 Dark Up 37.5 304.7 Up 11:47:14 - 12:17:14 -2341
Kingman/Dolan Springs 12:02:06 -31.6 Dark Up 34.7 306.3 Up 11:47:06 - 12:17:06 -2344
Lee Vining 12:02:20 -35.9 Dark Up 39.6 303.4 Up 11:47:20 - 12:17:20 -2368
Searchlight/Boulder City 12:02:08 -32.3 Dark Up 35.4 306.0 Up 11:47:08 - 12:17:08 -2368
Laughlin/Bullhead City 12:02:07 -32.0 Dark Up 35.0 306.2 Up 11:47:07 - 12:17:07 -2375
Bishop 12:02:18 -35.3 Dark Up 38.8 304.0 Up 11:47:18 - 12:17:18 -2385
Mohave Valley 12:02:06 -32.0 Dark Up 34.9 306.4 Up 11:47:06 - 12:17:06 -2399
Lake Havasu City 12:02:05 -31.7 Dark Up 34.5 306.7 Up 11:47:05 - 12:17:05 -2420
Lone Pine 12:02:16 -34.9 Dark Up 38.1 304.5 Up 11:47:16 - 12:17:16 -2436
Parker 12:02:04 -31.6 Dark Up 34.2 306.9 Up 11:47:04 - 12:17:04 -2449
Blythe 12:02:04 -31.8 Dark Up 34.1 307.1 Up 11:47:04 - 12:17:04 -2512
Yuma 12:02:03 -31.7 Dark Up 33.6 307.6 Up 11:47:03 - 12:17:03 -2595
Calipatria 12:02:05 -32.5 Dark Up 34.4 307.2 Up 11:47:05 - 12:17:05 -2608
Idyllwild 12:02:08 -33.5 Dark Up 35.6 306.6 Up 11:47:08 - 12:17:08 -2620
CPSLO 12:02:19 -36.9 Dark Up 39.1 304.8 Up 11:47:19 - 12:17:19 -2689
Wildwood 12:02:12 -35.1 Dark Up 37.1 306.0 Up 11:47:12 - 12:17:12 -2691

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 341275, (2019/12/22 12:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 32.10 110
34Bet Aur      05:59:31.6 +44:56:51  1.9  5.20 128
PPM 048270     05:36:16.0 +47:42:55  6.1  1.43 130
PPM 048157     05:29:54.8 +46:34:18  8.4  0.22 132
341275         05:31:12.4 +46:34:18 16.2       131
Positions are for J2000

Event circumstances last updated at 2018/06/05 18:22:21 UT

Marc W. Buie, Southwest Research Institute

RECON