RECON: TNO occultation with 341275

Event between (341275) 07RG283 and star UC4-691-031494 with event index number of 171418

Geocentric closest approach at 2018/12/14 10:44:45 UTC

J2000 position of star is 04:53:49.9 +48:09:55
Equinox of date position of star is 04:55:10.7 +48:11:36
Stellar brightness R=16.0, use SENSEUP=128
Star is 98 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 15.6 AU from the Sun and 14.7 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 7.6 arcsec/hr.
The 1-sigma error in the time of the event is 290 seconds.
The 1-sigma cross-track error in the shadow position is 2515 km.
The sky-plane scale is 10657.2 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, (2018/12/14 10:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.6 +16:32:45  0.8 31.87  89
34Bet Aur      06:00:55.2 +44:56:50  1.9 11.72 109
PPM 047420     04:52:35.1 +48:46:17  5.7  0.73  97
PPM 047530     04:58:29.9 +47:54:25  7.8  0.61  98
PPM 047460     04:55:15.7 +47:59:09  8.9  0.21  98
PPM 047473     04:55:55.4 +48:06:20 10.2  0.14  98
341275         04:55:15.3 +48:11:42 16.0        98
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 3.1 sigma about the mid-time.
The median site spacing is 21.8 km RECON observability=1.0 and success probability=14.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:42:12 -48.0 Dark Down 57.1 288.3 Up 10:27:12 - 10:57:12 2729
Tonasket 10:42:11 -48.0 Dark Down 57.0 288.7 Up 10:27:11 - 10:57:11 2705
Okanogan 10:42:11 -48.3 Dark Down 57.0 289.1 Up 10:27:11 - 10:57:11 2666
Brewster 10:42:11 -48.5 Dark Down 57.0 289.4 Up 10:27:11 - 10:57:11 2633
Manson/Chelan 10:42:12 -48.8 Dark Down 57.2 289.6 Up 10:27:12 - 10:57:12 2601
Entiat 10:42:12 -48.9 Dark Down 57.1 289.9 Up 10:27:12 - 10:57:12 2576
Wenatchee 10:42:12 -49.1 Dark Down 57.1 290.2 Up 10:27:12 - 10:57:12 2547
Ellensburg 10:42:12 -49.4 Dark Down 57.1 290.7 Up 10:27:12 - 10:57:12 2498
Pasco 10:42:06 -48.7 Dark Down 55.9 292.2 Up 10:27:06 - 10:57:06 2462
Yakima 10:42:11 -49.5 Dark Down 57.0 291.3 Up 10:27:11 - 10:57:11 2456
PNWRO 10:42:06 -48.6 Dark Down 55.7 292.7 Up 10:27:06 - 10:57:06 2443
Toppenish/White Swan 10:42:10 -49.5 Dark Down 56.8 291.7 Up 10:27:10 - 10:57:10 2438
George/Umatilla 10:42:07 -49.0 Dark Down 56.0 292.6 Up 10:27:07 - 10:57:07 2421
Niwot 10:41:22 -39.9 Dark Down 44.2 302.7 Up 10:26:22 - 10:56:22 2372
Goldendale 10:42:10 -50.0 Dark Down 56.9 292.3 Up 10:27:10 - 10:57:10 2369
The Dalles 10:42:11 -50.3 Dark Down 57.0 292.5 Up 10:27:11 - 10:57:11 2335
Maupin 10:42:10 -50.3 Dark Down 56.8 293.1 Up 10:27:10 - 10:57:10 2295
Madras/Culver 10:42:10 -50.6 Dark Down 56.6 293.9 Up 10:27:10 - 10:57:10 2237
Redmond 10:42:09 -50.7 Dark Down 56.5 294.4 Up 10:27:09 - 10:57:09 2198
Sisters 10:42:10 -51.0 Dark Down 56.7 294.2 Up 10:27:10 - 10:57:10 2189
Bend 10:42:10 -50.9 Dark Down 56.5 294.6 Up 10:27:10 - 10:57:10 2172
Oregon Observatory 10:42:10 -51.0 Dark Down 56.5 294.8 Up 10:27:10 - 10:57:10 2150
La Pine/Gilchrist 10:42:10 -51.1 Dark Down 56.4 295.1 Up 10:27:10 - 10:57:10 2127
North Lake 10:42:07 -50.8 Dark Down 55.9 295.8 Up 10:27:07 - 10:57:07 2099
Paisley 10:42:06 -50.8 Dark Down 55.4 296.6 Up 10:27:06 - 10:57:06 2053
Lakeview 10:42:04 -50.8 Dark Down 55.0 297.3 Up 10:27:04 - 10:57:04 2006
Chiloquin 10:42:09 -51.7 Dark Down 56.2 296.5 Up 10:27:09 - 10:57:09 2001
Klamath Falls 10:42:09 -51.8 Dark Down 56.0 297.0 Up 10:27:09 - 10:57:09 1968
Tulelake 10:42:07 -51.6 Dark Down 55.7 297.4 Up 10:27:07 - 10:57:07 1949
Cedarville 10:42:03 -50.8 Dark Down 54.6 298.2 Up 10:27:03 - 10:57:03 1944
Fall River/Burney 10:42:06 -51.8 Dark Down 55.2 298.6 Up 10:27:06 - 10:57:06 1857
Susanville 10:42:03 -51.4 Dark Down 54.4 299.5 Up 10:27:03 - 10:57:03 1815
Gimple 10:42:03 -51.7 Dark Down 54.4 299.8 Up 10:27:03 - 10:57:03 1780
Greenville 10:42:03 -51.7 Dark Down 54.5 299.8 Up 10:27:03 - 10:57:03 1777
Portola 10:42:02 -51.4 Dark Down 54.0 300.2 Up 10:27:02 - 10:57:02 1758
Quincy 10:42:03 -51.8 Dark Down 54.4 300.0 Up 10:27:03 - 10:57:03 1756
Reno 10:41:59 -51.0 Dark Down 53.4 300.6 Up 10:26:59 - 10:56:59 1751
Yerington 10:41:57 -50.6 Dark Down 52.7 301.3 Up 10:26:57 - 10:56:57 1716
Carson City 10:41:59 -51.1 Dark Down 53.2 301.0 Up 10:26:59 - 10:56:59 1715
Gardnerville 10:41:59 -51.1 Dark Down 53.1 301.3 Up 10:26:59 - 10:56:59 1692
Tonopah 10:41:50 -49.3 Dark Down 50.9 302.5 Up 10:26:50 - 10:56:50 1688
Hawthorne 10:41:55 -50.3 Dark Down 52.1 301.8 Up 10:26:55 - 10:56:55 1686
Lee Vining 10:41:55 -50.8 Dark Down 52.1 302.4 Up 10:26:55 - 10:56:55 1612
Indian Springs 10:41:44 -48.3 Dark Down 49.1 304.1 Up 10:26:44 - 10:56:44 1594
Beatty 10:41:47 -49.1 Dark Down 50.0 303.7 Up 10:26:47 - 10:56:47 1587
Bishop 10:41:53 -50.3 Dark Down 51.3 303.1 Up 10:26:53 - 10:56:53 1576
Henderson 10:41:41 -47.8 Dark Down 48.4 304.6 Up 10:26:41 - 10:56:41 1567
Patrick 10:41:37 -46.9 Dark Down 47.3 305.3 Up 10:26:37 - 10:56:37 1549
DCO 10:41:35 -46.4 Dark Down 46.6 305.6 Up 10:26:35 - 10:56:35 1547
Kingman/Dolan Springs 10:41:37 -47.1 Dark Down 47.3 305.5 Up 10:26:37 - 10:56:37 1519
Searchlight/Boulder City 10:41:40 -47.8 Dark Down 48.0 305.2 Up 10:26:40 - 10:56:40 1513
Lone Pine 10:41:51 -50.2 Dark Down 50.7 303.9 Up 10:26:51 - 10:56:51 1511
Laughlin/Bullhead City 10:41:39 -47.5 Dark Down 47.6 305.5 Up 10:26:39 - 10:56:39 1497
Mohave Valley 10:41:39 -47.5 Dark Down 47.4 305.7 Up 10:26:39 - 10:56:39 1470
Lake Havasu City 10:41:37 -47.4 Dark Down 47.0 306.1 Up 10:26:37 - 10:56:37 1440
Parker 10:41:37 -47.3 Dark Down 46.8 306.4 Up 10:26:37 - 10:56:37 1407
Blythe 10:41:37 -47.6 Dark Down 46.7 306.8 Up 10:26:37 - 10:56:37 1343
CPSLO 10:41:58 -52.4 Dark Down 51.7 305.2 Up 10:26:58 - 10:56:58 1292
Idyllwild 10:41:44 -49.3 Dark Down 48.2 306.7 Up 10:26:44 - 10:56:44 1273
Calipatria 10:41:40 -48.4 Dark Down 47.0 307.2 Up 10:26:40 - 10:56:40 1258
Yuma 10:41:37 -47.7 Dark Down 46.2 307.6 Up 10:26:37 - 10:56:37 1251
Wildwood 10:41:50 -50.9 Dark Down 49.6 306.4 Up 10:26:50 - 10:56:50 1240

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, (2018/12/14 10:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 31.87  89
34Bet Aur      05:59:31.6 +44:56:51  1.9 11.72 109
PPM 047420     04:51:09.2 +48:44:26  5.7  0.73  97
PPM 047530     04:57:04.6 +47:52:43  7.8  0.61  98
PPM 047460     04:53:50.5 +47:57:22  8.9  0.21  98
PPM 047473     04:54:30.0 +48:04:34 10.2  0.14  98
341275         04:53:49.9 +48:09:55 16.0        98
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:06:38 UT

Marc W. Buie, Southwest Research Institute

RECON