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 04:55:06.5 +48:11:31
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 179 seconds.
The 1-sigma cross-track error in the shadow position is 1601 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 +16:32:46  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 5.0 sigma about the mid-time.
The median site spacing is 21.8 km RECON observability=1.0 and success probability=17.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:42:11 -48.0 Dark Down 57.1 288.3 Up 10:27:11 - 10:57:11 2737
Tonasket 10:42:10 -48.0 Dark Down 57.0 288.7 Up 10:27:10 - 10:57:10 2713
Okanogan 10:42:10 -48.3 Dark Down 57.0 289.1 Up 10:27:10 - 10:57:10 2674
Brewster 10:42:10 -48.5 Dark Down 57.0 289.4 Up 10:27:10 - 10:57:10 2641
Manson/Chelan 10:42:11 -48.8 Dark Down 57.2 289.6 Up 10:27:11 - 10:57:11 2609
Entiat 10:42:11 -48.9 Dark Down 57.1 289.9 Up 10:27:11 - 10:57:11 2584
Wenatchee 10:42:10 -49.1 Dark Down 57.1 290.2 Up 10:27:10 - 10:57:10 2555
Ellensburg 10:42:10 -49.4 Dark Down 57.1 290.7 Up 10:27:10 - 10:57:10 2506
Pasco 10:42:06 -48.7 Dark Down 55.9 292.2 Up 10:27:06 - 10:57:06 2470
Yakima 10:42:10 -49.5 Dark Down 57.0 291.3 Up 10:27:10 - 10:57:10 2464
PNWRO 10:42:05 -48.6 Dark Down 55.7 292.7 Up 10:27:05 - 10:57:05 2452
Toppenish/White Swan 10:42:09 -49.5 Dark Down 56.8 291.7 Up 10:27:09 - 10:57:09 2446
George/Umatilla 10:42:06 -49.0 Dark Down 56.0 292.6 Up 10:27:06 - 10:57:06 2430
Niwot 10:41:21 -39.9 Dark Down 44.2 302.7 Up 10:26:21 - 10:56:21 2385
Goldendale 10:42:10 -50.0 Dark Down 56.9 292.3 Up 10:27:10 - 10:57:10 2377
The Dalles 10:42:10 -50.3 Dark Down 57.0 292.5 Up 10:27:10 - 10:57:10 2343
Maupin 10:42:09 -50.3 Dark Down 56.8 293.1 Up 10:27:09 - 10:57:09 2303
Madras/Culver 10:42:08 -50.6 Dark Down 56.6 293.9 Up 10:27:08 - 10:57:08 2245
Redmond 10:42:08 -50.7 Dark Down 56.5 294.4 Up 10:27:08 - 10:57:08 2206
Sisters 10:42:09 -51.0 Dark Down 56.7 294.2 Up 10:27:09 - 10:57:09 2197
Bend 10:42:08 -50.9 Dark Down 56.5 294.6 Up 10:27:08 - 10:57:08 2180
Oregon Observatory 10:42:08 -51.0 Dark Down 56.5 294.8 Up 10:27:08 - 10:57:08 2158
La Pine/Gilchrist 10:42:08 -51.1 Dark Down 56.4 295.1 Up 10:27:08 - 10:57:08 2135
North Lake 10:42:06 -50.8 Dark Down 55.9 295.8 Up 10:27:06 - 10:57:06 2108
Paisley 10:42:05 -50.8 Dark Down 55.4 296.6 Up 10:27:05 - 10:57:05 2062
Lakeview 10:42:04 -50.8 Dark Down 55.0 297.3 Up 10:27:04 - 10:57:04 2015
Chiloquin 10:42:08 -51.7 Dark Down 56.2 296.5 Up 10:27:08 - 10:57:08 2010
Klamath Falls 10:42:07 -51.8 Dark Down 56.0 297.0 Up 10:27:07 - 10:57:07 1977
Tulelake 10:42:06 -51.6 Dark Down 55.7 297.4 Up 10:27:06 - 10:57:06 1957
Cedarville 10:42:02 -50.8 Dark Down 54.6 298.2 Up 10:27:02 - 10:57:02 1953
Fall River/Burney 10:42:05 -51.8 Dark Down 55.2 298.6 Up 10:27:05 - 10:57:05 1866
Susanville 10:42:02 -51.4 Dark Down 54.4 299.5 Up 10:27:02 - 10:57:02 1823
Gimple 10:42:02 -51.7 Dark Down 54.4 299.8 Up 10:27:02 - 10:57:02 1788
Greenville 10:42:02 -51.7 Dark Down 54.5 299.8 Up 10:27:02 - 10:57:02 1786
Portola 10:42:01 -51.4 Dark Down 54.0 300.2 Up 10:27:01 - 10:57:01 1767
Quincy 10:42:02 -51.8 Dark Down 54.4 300.0 Up 10:27:02 - 10:57:02 1765
Reno 10:41:59 -51.0 Dark Down 53.4 300.6 Up 10:26:59 - 10:56:59 1761
Yerington 10:41:56 -50.6 Dark Down 52.7 301.3 Up 10:26:56 - 10:56:56 1725
Carson City 10:41:59 -51.1 Dark Down 53.2 301.0 Up 10:26:59 - 10:56:59 1725
Gardnerville 10:41:58 -51.1 Dark Down 53.1 301.3 Up 10:26:58 - 10:56:58 1701
Tonopah 10:41:49 -49.3 Dark Down 50.9 302.5 Up 10:26:49 - 10:56:49 1698
Hawthorne 10:41:54 -50.3 Dark Down 52.1 301.8 Up 10:26:54 - 10:56:54 1696
Lee Vining 10:41:55 -50.8 Dark Down 52.1 302.4 Up 10:26:55 - 10:56:55 1622
Indian Springs 10:41:43 -48.3 Dark Down 49.1 304.1 Up 10:26:43 - 10:56:43 1605
Beatty 10:41:47 -49.1 Dark Down 50.0 303.7 Up 10:26:47 - 10:56:47 1598
Bishop 10:41:52 -50.3 Dark Down 51.3 303.1 Up 10:26:52 - 10:56:52 1586
Henderson 10:41:40 -47.8 Dark Down 48.4 304.6 Up 10:26:40 - 10:56:40 1578
Patrick 10:41:36 -46.9 Dark Down 47.3 305.3 Up 10:26:36 - 10:56:36 1560
DCO 10:41:34 -46.4 Dark Down 46.6 305.6 Up 10:26:34 - 10:56:34 1559
Kingman/Dolan Springs 10:41:37 -47.1 Dark Down 47.3 305.5 Up 10:26:37 - 10:56:37 1531
Searchlight/Boulder City 10:41:39 -47.8 Dark Down 48.0 305.2 Up 10:26:39 - 10:56:39 1524
Lone Pine 10:41:50 -50.2 Dark Down 50.7 303.9 Up 10:26:50 - 10:56:50 1521
Laughlin/Bullhead City 10:41:38 -47.5 Dark Down 47.6 305.5 Up 10:26:38 - 10:56:38 1508
Mohave Valley 10:41:38 -47.5 Dark Down 47.4 305.7 Up 10:26:38 - 10:56:38 1481
Lake Havasu City 10:41:37 -47.4 Dark Down 47.0 306.1 Up 10:26:37 - 10:56:37 1452
Parker 10:41:36 -47.3 Dark Down 46.8 306.4 Up 10:26:36 - 10:56:36 1418
Blythe 10:41:36 -47.6 Dark Down 46.7 306.8 Up 10:26:36 - 10:56:36 1355
CPSLO 10:41:57 -52.4 Dark Down 51.7 305.2 Up 10:26:57 - 10:56:57 1301
Idyllwild 10:41:43 -49.3 Dark Down 48.2 306.7 Up 10:26:43 - 10:56:43 1284
Calipatria 10:41:39 -48.4 Dark Down 47.0 307.2 Up 10:26:39 - 10:56:39 1269
Yuma 10:41:36 -47.7 Dark Down 46.2 307.6 Up 10:26:36 - 10:56:36 1263
Wildwood 10:41:49 -50.9 Dark Down 49.6 306.4 Up 10:26:49 - 10:56:49 1250

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     04:51:09.3 +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 2017/01/01 19:03:28 UT

Marc W. Buie, Southwest Research Institute

RECON