RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star UC4-683-039034 with event index number of 233100

Geocentric closest approach at 2019/12/22 12:02:33 UTC

J2000 position of star is 05:31:12.4 +46:34:18
Equinox of date position of star is 05:32:33.0 +46:35:02
Stellar brightness R=16.3, 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 275 seconds.
The 1-sigma cross-track error in the shadow position is 2012 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 12:03UT)
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 16.3       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 3.3 sigma about the mid-time.
The median site spacing is 15.6 km RECON observability=1.0 and success probability=14.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:59:24 -36.4 Dark Up 45.6 294.1 Up 11:44:24 - 12:14:24 -1411
Tonasket 11:59:24 -36.4 Dark Up 45.5 294.3 Up 11:44:24 - 12:14:24 -1431
Niwot 11:58:42 -26.0 Dark Up 32.5 306.1 Up 11:43:42 - 12:13:42 -1452
Okanogan 11:59:23 -36.6 Dark Up 45.4 294.6 Up 11:44:23 - 12:14:23 -1467
Brewster 11:59:23 -36.7 Dark Up 45.4 294.7 Up 11:44:23 - 12:14:23 -1500
Manson/Chelan 11:59:23 -37.0 Dark Up 45.6 294.7 Up 11:44:23 - 12:14:23 -1535
Entiat 11:59:23 -37.1 Dark Up 45.5 294.9 Up 11:44:23 - 12:14:23 -1557
Wenatchee 11:59:22 -37.2 Dark Up 45.5 295.1 Up 11:44:22 - 12:14:22 -1584
Ellensburg 11:59:21 -37.3 Dark Up 45.4 295.4 Up 11:44:21 - 12:14:21 -1631
Pasco 11:59:17 -36.4 Dark Up 44.2 296.7 Up 11:44:17 - 12:14:17 -1637
PNWRO 11:59:16 -36.3 Dark Up 44.0 297.0 Up 11:44:16 - 12:14:16 -1649
Yakima 11:59:20 -37.4 Dark Up 45.3 295.8 Up 11:44:20 - 12:14:20 -1669
George/Umatilla 11:59:16 -36.6 Dark Up 44.2 296.9 Up 11:44:16 - 12:14:16 -1676
Toppenish/White Swan 11:59:19 -37.3 Dark Up 45.1 296.0 Up 11:44:19 - 12:14:19 -1681
Goldendale 11:59:19 -37.6 Dark Up 45.1 296.3 Up 11:44:19 - 12:14:19 -1750
The Dalles 11:59:19 -37.9 Dark Up 45.2 296.4 Up 11:44:19 - 12:14:19 -1786
Maupin 11:59:18 -37.9 Dark Up 45.0 296.8 Up 11:44:18 - 12:14:18 -1820
Madras/Culver 11:59:17 -37.9 Dark Up 44.8 297.3 Up 11:44:17 - 12:14:17 -1872
Redmond 11:59:16 -38.0 Dark Up 44.6 297.6 Up 11:44:16 - 12:14:16 -1907
Sisters 11:59:17 -38.3 Dark Up 44.9 297.4 Up 11:44:17 - 12:14:17 -1922
Bend 11:59:16 -38.1 Dark Up 44.6 297.7 Up 11:44:16 - 12:14:16 -1933
Oregon Observatory 11:59:16 -38.2 Dark Up 44.6 297.8 Up 11:44:16 - 12:14:16 -1954
La Pine/Gilchrist 11:59:16 -38.3 Dark Up 44.6 298.0 Up 11:44:16 - 12:14:16 -1976
North Lake 11:59:13 -37.9 Dark Up 44.0 298.5 Up 11:44:13 - 12:14:13 -1989
Paisley 11:59:12 -37.6 Dark Up 43.5 299.1 Up 11:44:12 - 12:14:12 -2023
Lakeview 11:59:10 -37.5 Dark Up 43.1 299.6 Up 11:44:10 - 12:14:10 -2060
Chiloquin 11:59:14 -38.6 Dark Up 44.3 298.8 Up 11:44:14 - 12:14:14 -2094
Cedarville 11:59:08 -37.4 Dark Up 42.7 300.2 Up 11:44:08 - 12:14:08 -2112
Klamath Falls 11:59:13 -38.5 Dark Up 44.1 299.1 Up 11:44:13 - 12:14:13 -2122
Tulelake 11:59:12 -38.3 Dark Up 43.7 299.4 Up 11:44:12 - 12:14:12 -2134
Fall River/Burney 11:59:10 -38.3 Dark Up 43.2 300.2 Up 11:44:10 - 12:14:10 -2214
Susanville 11:59:07 -37.7 Dark Up 42.4 300.9 Up 11:44:07 - 12:14:07 -2237
Gimple 11:59:07 -37.9 Dark Up 42.4 301.1 Up 11:44:07 - 12:14:07 -2273
Greenville 11:59:07 -38.0 Dark Up 42.5 301.1 Up 11:44:07 - 12:14:07 -2277
Reno 11:59:04 -37.1 Dark Up 41.4 301.8 Up 11:44:04 - 12:14:04 -2277
Tonopah 11:58:56 -35.0 Dark Up 38.9 303.6 Up 11:43:56 - 12:13:56 -2282
Portola 11:59:05 -37.6 Dark Up 42.0 301.4 Up 11:44:05 - 12:14:05 -2284
Quincy 11:59:07 -38.0 Dark Up 42.4 301.2 Up 11:44:07 - 12:14:07 -2295
Yerington 11:59:01 -36.6 Dark Up 40.7 302.4 Up 11:44:01 - 12:14:01 -2295
Carson City 11:59:03 -37.1 Dark Up 41.2 302.1 Up 11:44:03 - 12:14:03 -2309
Hawthorne 11:58:59 -36.2 Dark Up 40.1 302.9 Up 11:43:59 - 12:13:59 -2311
DCO 11:58:43 -31.5 Dark Up 34.6 306.4 Up 11:43:43 - 12:13:43 -2325
Gardnerville 11:59:02 -37.0 Dark Up 41.1 302.3 Up 11:44:02 - 12:14:02 -2329
Indian Springs 11:58:50 -33.7 Dark Up 37.1 304.9 Up 11:43:50 - 12:13:50 -2334
Patrick 11:58:44 -32.1 Dark Up 35.3 306.1 Up 11:43:44 - 12:13:44 -2338
Henderson 11:58:48 -33.1 Dark Up 36.4 305.4 Up 11:43:48 - 12:13:48 -2344
Beatty 11:58:53 -34.6 Dark Up 38.0 304.5 Up 11:43:53 - 12:13:53 -2362
Kingman/Dolan Springs 11:58:44 -32.3 Dark Up 35.3 306.1 Up 11:43:44 - 12:13:44 -2368
Lee Vining 11:58:59 -36.5 Dark Up 40.1 303.2 Up 11:43:59 - 12:13:59 -2387
Searchlight/Boulder City 11:58:47 -33.0 Dark Up 36.0 305.8 Up 11:43:47 - 12:13:47 -2391
Laughlin/Bullhead City 11:58:45 -32.7 Dark Up 35.6 306.0 Up 11:43:45 - 12:13:45 -2398
Bishop 11:58:57 -35.9 Dark Up 39.3 303.8 Up 11:43:57 - 12:13:57 -2405
Mohave Valley 11:58:45 -32.6 Dark Up 35.4 306.2 Up 11:43:45 - 12:13:45 -2422
Lake Havasu City 11:58:43 -32.4 Dark Up 35.0 306.5 Up 11:43:43 - 12:13:43 -2444
Lone Pine 11:58:54 -35.6 Dark Up 38.7 304.3 Up 11:43:54 - 12:13:54 -2457
Parker 11:58:43 -32.3 Dark Up 34.8 306.7 Up 11:43:43 - 12:13:43 -2473
Blythe 11:58:43 -32.5 Dark Up 34.7 306.9 Up 11:43:43 - 12:13:43 -2536
Yuma 11:58:41 -32.4 Dark Up 34.2 307.4 Up 11:43:41 - 12:13:41 -2620
Calipatria 11:58:43 -33.2 Dark Up 35.0 307.0 Up 11:43:43 - 12:13:43 -2632
Idyllwild 11:58:47 -34.2 Dark Up 36.2 306.4 Up 11:43:47 - 12:13:47 -2643
CPSLO 11:58:58 -37.6 Dark Up 39.7 304.7 Up 11:43:58 - 12:13:58 -2708
Wildwood 11:58:51 -35.8 Dark Up 37.6 305.8 Up 11:43:51 - 12:13:51 -2712

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 12:03UT)
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 16.3       131
Positions are for J2000

Event circumstances last updated at 2018/01/01 18:29:40 UT

Marc W. Buie, Southwest Research Institute

RECON