RECON: TNO occultation with 143707

Event between (143707) 03UY117 and star UC4-561-006100 with event index number of 154021

Geocentric closest approach at 2018/10/26 04:06:23 UTC

J2000 position of star is 03:04:56.4 +22:06:43
Equinox of date position of star is 03:05:56.6 +22:10:43
Stellar brightness R=14.5, use SENSEUP=128
Star is 9 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 33.9 AU from the Sun and 33.0 AU from the Earth.
The TNO is moving 22.8 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 99 seconds.
The 1-sigma cross-track error in the shadow position is 1271 km.
The sky-plane scale is 23934.6 km/arcsec.

The TNO has an absolute magnitude Hv=5.9
Diameter=398.1 km assuming a 5% albedo -- 17.5 sec chord
Diameter=162.5 km assuming a 30% albedo -- 7.1 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 143707, (2018/10/26 04:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.1 +16:32:45  0.8 22.16  19
Hamal          02:08:14.3 +23:33:02  2.0 13.38  20
48Eps Ari      03:00:17.5 +21:24:52  5.6  1.54   9
PPM 092164     03:03:32.8 +22:26:47  8.3  0.63  10
PPM 092189     03:05:40.6 +21:47:47  9.7  0.40   9
PPM 092200     03:06:38.6 +21:54:40 11.2  0.31   9
143707         03:06:01.6 +22:11:03 14.5         9
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 13.9 km RECON observability=1.0 and success probability=15.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:08:22 -33.0 Dark Up 30.1 90.1 Up 03:59:39 - 04:17:05 -1314
Tonasket 04:08:23 -33.1 Dark Up 30.1 90.0 Up 03:59:40 - 04:17:06 -1327
Okanogan 04:08:25 -33.1 Dark Up 30.0 89.7 Low 03:59:42 - 04:17:08 -1341
Manson/Chelan 04:08:27 -33.0 Dark Up 29.6 89.0 Low 03:59:44 - 04:17:10 -1349
Brewster 04:08:26 -33.1 Dark Up 29.8 89.4 Low 03:59:43 - 04:17:09 -1350
Entiat 04:08:29 -33.0 Dark Up 29.5 88.8 Low 03:59:46 - 04:17:12 -1360
Wenatchee 04:08:29 -33.0 Dark Up 29.5 88.6 Low 03:59:46 - 04:17:12 -1371
Ellensburg 04:08:32 -33.0 Dark Up 29.3 88.2 Low 03:59:49 - 04:17:15 -1387
Yakima 04:08:33 -33.1 Dark Up 29.3 88.0 Low 03:59:50 - 04:17:16 -1410
Toppenish/White Swan 04:08:34 -33.3 Dark Up 29.4 88.0 Low 03:59:51 - 04:17:17 -1428
Goldendale 04:08:37 -33.2 Dark Up 29.1 87.4 Low 03:59:54 - 04:17:20 -1446
The Dalles 04:08:38 -33.0 Dark Up 28.8 87.0 Low 03:59:55 - 04:17:21 -1447
Maupin 04:08:40 -33.2 Dark Up 28.9 86.9 Low 03:59:57 - 04:17:23 -1476
Pasco 04:08:33 -34.2 Dark Up 30.3 88.8 Up 03:59:50 - 04:17:16 -1478
George/Umatilla 04:08:35 -34.2 Dark Up 30.1 88.5 Up 03:59:52 - 04:17:18 -1491
PNWRO 04:08:34 -34.4 Dark Up 30.4 88.9 Up 03:59:51 - 04:17:17 -1500
Madras/Culver 04:08:42 -33.4 Dark Up 28.8 86.6 Low 03:59:59 - 04:17:25 -1507
Sisters 04:08:43 -33.2 Dark Up 28.5 86.1 Low 04:00:00 - 04:17:26 -1511
Redmond 04:08:43 -33.4 Dark Up 28.8 86.3 Low 04:00:00 - 04:17:26 -1526
Bend 04:08:44 -33.4 Dark Up 28.7 86.1 Low 04:00:01 - 04:17:27 -1535
Oregon Observatory 04:08:45 -33.4 Dark Up 28.6 85.9 Low 04:00:02 - 04:17:28 -1540
La Pine/Gilchrist 04:08:46 -33.4 Dark Up 28.5 85.8 Low 04:00:03 - 04:17:29 -1551
North Lake 04:08:48 -33.9 Dark Up 28.9 86.0 Low 04:00:05 - 04:17:31 -1599
Chiloquin 04:08:51 -33.4 Dark Up 28.2 85.0 Low 04:00:08 - 04:17:34 -1607
Klamath Falls 04:08:51 -33.6 Dark Up 28.2 84.8 Low 04:00:08 - 04:17:34 -1632
Paisley 04:08:49 -34.3 Dark Up 29.2 85.9 Low 04:00:06 - 04:17:32 -1646
Tulelake 04:08:52 -33.9 Dark Up 28.4 84.9 Low 04:00:09 - 04:17:35 -1660
Lakeview 04:08:51 -34.6 Dark Up 29.3 85.7 Low 04:00:08 - 04:17:34 -1685
Fall River/Burney 04:08:56 -34.2 Dark Up 28.4 84.5 Low 04:00:13 - 04:17:39 -1722
Cedarville 04:08:53 -34.9 Dark Up 29.4 85.5 Low 04:00:10 - 04:17:36 -1734
Susanville 04:08:58 -34.9 Dark Up 28.9 84.6 Low 04:00:15 - 04:17:41 -1790
Greenville 04:08:59 -34.7 Dark Up 28.7 84.3 Low 04:00:16 - 04:17:42 -1798
Gimple 04:08:59 -34.8 Dark Up 28.7 84.3 Low 04:00:16 - 04:17:42 -1801
Quincy 04:09:00 -34.8 Dark Up 28.7 84.1 Low 04:00:17 - 04:17:43 -1811
Portola 04:09:00 -35.2 Dark Up 29.0 84.4 Low 04:00:17 - 04:17:43 -1837
Reno 04:09:00 -35.7 Dark Up 29.5 84.6 Low 04:00:17 - 04:17:43 -1879
Carson City 04:09:02 -35.8 Dark Up 29.5 84.4 Low 04:00:19 - 04:17:45 -1905
Gardnerville 04:09:02 -35.9 Dark Up 29.5 84.3 Low 04:00:19 - 04:17:45 -1923
Yerington 04:09:02 -36.4 Dark Up 29.9 84.7 Low 04:00:19 - 04:17:45 -1942
Hawthorne 04:09:03 -36.9 Dark Up 30.3 84.7 Up 04:00:20 - 04:17:46 -1994
Lee Vining 04:09:06 -36.7 Dark Up 29.9 84.1 Low 04:00:23 - 04:17:49 -2015
Tonopah 04:09:03 -38.1 Dark Up 31.4 85.3 Up 04:00:20 - 04:17:46 -2081
Bishop 04:09:07 -37.4 Dark Up 30.4 84.2 Up 04:00:24 - 04:17:50 -2086
CPSLO 04:09:17 -36.1 Dark Up 28.4 81.8 Low 04:00:34 - 04:18:00 -2146
Lone Pine 04:09:10 -37.8 Dark Up 30.6 83.9 Up 04:00:27 - 04:17:53 -2153
Beatty 04:09:07 -38.8 Dark Up 31.7 84.8 Up 04:00:24 - 04:17:50 -2183
Indian Springs 04:09:07 -39.7 Dark Up 32.5 85.2 Up 04:00:24 - 04:17:50 -2250
Henderson 04:09:08 -40.4 Dark Up 33.0 85.3 Up 04:00:25 - 04:17:51 -2317
Wildwood 04:09:19 -38.0 Dark Up 29.9 82.2 Low 04:00:36 - 04:18:02 -2318
Searchlight/Boulder City 04:09:10 -40.6 Dark Up 33.0 84.9 Up 04:00:27 - 04:17:53 -2362
Niwot 04:08:39 -46.0 Dark Up 40.7 94.3 Up 03:59:56 - 04:17:22 -2397
Laughlin/Bullhead City 04:09:11 -40.9 Dark Up 33.3 84.9 Up 04:00:28 - 04:17:54 -2399
Patrick 04:09:09 -41.4 Dark Up 33.9 85.5 Up 04:00:26 - 04:17:52 -2409
Kingman/Dolan Springs 04:09:10 -41.3 Dark Up 33.7 85.2 Up 04:00:27 - 04:17:53 -2418
Mohave Valley 04:09:12 -41.0 Dark Up 33.3 84.8 Up 04:00:29 - 04:17:55 -2420
Idyllwild 04:09:19 -39.6 Dark Up 31.4 82.9 Up 04:00:36 - 04:18:02 -2421
DCO 04:09:09 -42.1 Dark Up 34.4 85.6 Up 04:00:26 - 04:17:52 -2461
Lake Havasu City 04:09:13 -41.3 Dark Up 33.4 84.6 Up 04:00:30 - 04:17:56 -2461
Parker 04:09:14 -41.4 Dark Up 33.4 84.4 Up 04:00:31 - 04:17:57 -2489
Calipatria 04:09:19 -40.7 Dark Up 32.3 83.2 Up 04:00:36 - 04:18:02 -2518
Blythe 04:09:16 -41.3 Dark Up 33.1 83.9 Up 04:00:33 - 04:17:59 -2518
Yuma 04:09:19 -41.5 Dark Up 33.0 83.3 Up 04:00:36 - 04:18:02 -2588

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 143707, (2018/10/26 04:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.16  19
Hamal          02:07:10.6 +23:27:42  2.0 13.38  20
48Eps Ari      02:59:12.7 +21:20:25  5.6  1.54   9
PPM 092164     03:02:27.5 +22:22:24  8.3  0.63  10
PPM 092189     03:04:35.5 +21:43:26  9.7  0.40   9
PPM 092200     03:05:33.4 +21:50:21 11.2  0.31   9
143707         03:04:56.4 +22:06:43 14.5         9
Positions are for J2000

Event circumstances last updated at 2017/05/19 18:04:58 UT

Marc W. Buie, Southwest Research Institute

RECON