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 04:11:07 UTC

J2000 position of star is 03:04:56.4 +22:06:43
Equinox of date position of star is 03:05:58.5 +22:10:51
Stellar brightness R=14.5, use SENSEUP=128
Star is 9 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=21.0

[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 105 seconds.
The 1-sigma cross-track error in the shadow position is 1285 km.
The sky-plane scale is 23934.3 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 19.2 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.8 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 143707, (2018/10/26 04:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:00.2 +16:32:44  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 14.1 km RECON observability=1.0 and success probability=16.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:13:06 -33.7 Dark Up 30.8 91.0 Up 04:03:50 - 04:22:22 -1299
Tonasket 04:13:07 -33.8 Dark Up 30.9 90.9 Up 04:03:51 - 04:22:23 -1312
Okanogan 04:13:09 -33.9 Dark Up 30.8 90.6 Up 04:03:53 - 04:22:25 -1326
Manson/Chelan 04:13:11 -33.7 Dark Up 30.4 89.9 Up 04:03:55 - 04:22:27 -1335
Brewster 04:13:10 -33.9 Dark Up 30.6 90.3 Up 04:03:54 - 04:22:26 -1335
Entiat 04:13:12 -33.7 Dark Up 30.3 89.7 Up 04:03:56 - 04:22:28 -1345
Wenatchee 04:13:13 -33.8 Dark Up 30.3 89.5 Up 04:03:57 - 04:22:29 -1357
Ellensburg 04:13:15 -33.8 Dark Up 30.1 89.1 Up 04:03:59 - 04:22:31 -1373
Yakima 04:13:17 -33.9 Dark Up 30.1 88.9 Up 04:04:01 - 04:22:33 -1396
Toppenish/White Swan 04:13:17 -34.1 Dark Up 30.2 88.9 Up 04:04:01 - 04:22:33 -1415
Goldendale 04:13:20 -34.0 Dark Up 29.9 88.2 Low 04:04:04 - 04:22:36 -1433
The Dalles 04:13:21 -33.8 Dark Up 29.7 87.9 Low 04:04:05 - 04:22:37 -1434
Maupin 04:13:23 -34.0 Dark Up 29.7 87.7 Low 04:04:07 - 04:22:39 -1463
Pasco 04:13:17 -34.9 Dark Up 31.1 89.7 Up 04:04:01 - 04:22:33 -1465
George/Umatilla 04:13:18 -34.9 Dark Up 31.0 89.3 Up 04:04:02 - 04:22:34 -1477
PNWRO 04:13:18 -35.2 Dark Up 31.3 89.7 Up 04:04:02 - 04:22:34 -1487
Madras/Culver 04:13:25 -34.2 Dark Up 29.7 87.4 Low 04:04:09 - 04:22:41 -1494
Sisters 04:13:27 -34.0 Dark Up 29.4 86.9 Low 04:04:11 - 04:22:43 -1499
Redmond 04:13:27 -34.3 Dark Up 29.6 87.1 Low 04:04:11 - 04:22:43 -1514
Bend 04:13:27 -34.2 Dark Up 29.5 86.9 Low 04:04:11 - 04:22:43 -1523
Oregon Observatory 04:13:28 -34.2 Dark Up 29.4 86.7 Low 04:04:12 - 04:22:44 -1529
La Pine/Gilchrist 04:13:30 -34.2 Dark Up 29.4 86.6 Low 04:04:14 - 04:22:46 -1539
North Lake 04:13:31 -34.8 Dark Up 29.8 86.7 Low 04:04:15 - 04:22:47 -1588
Chiloquin 04:13:34 -34.3 Dark Up 29.1 85.7 Low 04:04:18 - 04:22:50 -1596
Klamath Falls 04:13:35 -34.4 Dark Up 29.1 85.6 Low 04:04:19 - 04:22:51 -1621
Paisley 04:13:32 -35.2 Dark Up 30.0 86.7 Up 04:04:16 - 04:22:48 -1635
Tulelake 04:13:36 -34.7 Dark Up 29.3 85.6 Low 04:04:20 - 04:22:52 -1649
Lakeview 04:13:34 -35.5 Dark Up 30.1 86.5 Up 04:04:18 - 04:22:50 -1675
Fall River/Burney 04:13:40 -35.0 Dark Up 29.3 85.2 Low 04:04:24 - 04:22:56 -1711
Cedarville 04:13:37 -35.8 Dark Up 30.2 86.2 Up 04:04:21 - 04:22:53 -1724
Susanville 04:13:42 -35.8 Dark Up 29.8 85.3 Low 04:04:26 - 04:22:58 -1780
Greenville 04:13:43 -35.6 Dark Up 29.6 85.0 Low 04:04:27 - 04:22:59 -1788
Gimple 04:13:43 -35.7 Dark Up 29.6 85.0 Low 04:04:27 - 04:22:59 -1791
Quincy 04:13:44 -35.7 Dark Up 29.6 84.9 Low 04:04:28 - 04:23:00 -1801
Portola 04:13:44 -36.1 Dark Up 29.9 85.1 Low 04:04:28 - 04:23:00 -1828
Reno 04:13:44 -36.6 Dark Up 30.4 85.3 Up 04:04:28 - 04:23:00 -1870
Carson City 04:13:45 -36.7 Dark Up 30.4 85.1 Up 04:04:29 - 04:23:01 -1895
Gardnerville 04:13:46 -36.8 Dark Up 30.4 85.0 Up 04:04:30 - 04:23:02 -1914
Yerington 04:13:45 -37.3 Dark Up 30.9 85.4 Up 04:04:29 - 04:23:01 -1933
Hawthorne 04:13:46 -37.8 Dark Up 31.2 85.4 Up 04:04:30 - 04:23:02 -1986
Lee Vining 04:13:49 -37.6 Dark Up 30.8 84.8 Up 04:04:33 - 04:23:05 -2007
Tonopah 04:13:47 -39.0 Dark Up 32.3 86.0 Up 04:04:31 - 04:23:03 -2073
Bishop 04:13:51 -38.3 Dark Up 31.3 84.9 Up 04:04:35 - 04:23:07 -2077
CPSLO 04:14:00 -37.0 Dark Up 29.3 82.5 Low 04:04:44 - 04:23:16 -2138
Lone Pine 04:13:53 -38.7 Dark Up 31.5 84.6 Up 04:04:37 - 04:23:09 -2146
Beatty 04:13:51 -39.7 Dark Up 32.6 85.5 Up 04:04:35 - 04:23:07 -2175
Indian Springs 04:13:50 -40.6 Dark Up 33.4 85.9 Up 04:04:34 - 04:23:06 -2242
Henderson 04:13:51 -41.3 Dark Up 34.0 85.9 Up 04:04:35 - 04:23:07 -2310
Wildwood 04:14:03 -38.9 Dark Up 30.9 82.8 Up 04:04:47 - 04:23:19 -2310
Searchlight/Boulder City 04:13:53 -41.5 Dark Up 34.0 85.6 Up 04:04:37 - 04:23:09 -2355
Niwot 04:13:21 -46.8 Dark Up 41.6 95.1 Up 04:04:05 - 04:22:37 -2389
Laughlin/Bullhead City 04:13:54 -41.9 Dark Up 34.2 85.6 Up 04:04:38 - 04:23:10 -2392
Patrick 04:13:52 -42.3 Dark Up 34.8 86.1 Up 04:04:36 - 04:23:08 -2402
Kingman/Dolan Springs 04:13:53 -42.3 Dark Up 34.7 85.8 Up 04:04:37 - 04:23:09 -2411
Mohave Valley 04:13:55 -41.9 Dark Up 34.2 85.4 Up 04:04:39 - 04:23:11 -2413
Idyllwild 04:14:02 -40.5 Dark Up 32.4 83.5 Up 04:04:46 - 04:23:18 -2415
Lake Havasu City 04:13:56 -42.2 Dark Up 34.4 85.2 Up 04:04:40 - 04:23:12 -2454
DCO 04:13:52 -43.0 Dark Up 35.4 86.3 Up 04:04:36 - 04:23:08 -2454
Parker 04:13:57 -42.4 Dark Up 34.4 85.0 Up 04:04:41 - 04:23:13 -2483
Calipatria 04:14:02 -41.7 Dark Up 33.3 83.7 Up 04:04:46 - 04:23:18 -2511
Blythe 04:13:59 -42.3 Dark Up 34.1 84.5 Up 04:04:43 - 04:23:15 -2511
Yuma 04:14:02 -42.5 Dark Up 34.0 83.9 Up 04:04:46 - 04:23:18 -2582

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 04:11UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 22.16  19
Hamal          02:07:10.7 +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 2017/12/05 19:01:04 UT

Marc W. Buie, Southwest Research Institute

RECON