RECON: TNO occultation with 523764

Event between (523764) 14WC510 and star UC4-470-015683 with event index number of 348072

Geocentric closest approach at 2018/11/08 08:49:57 UTC

J2000 position of star is 06:07:31.5 +03:58:58
Equinox of date position of star is 06:08:31.0 +03:58:45
Stellar brightness R=15.0, use SENSEUP=128
Star is 141 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 30.5 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 16.9 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 110 seconds.
The 1-sigma cross-track error in the shadow position is 1229 km.
The sky-plane scale is 21625.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 12.9 sec chord
Diameter=89.3 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523764, (2018/11/08 08:50UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.6 +07:24:33  0.4  4.60 144
34Del Ori      05:32:58.2 -00:17:12  2.2  9.85 147
66 Ori         06:05:58.2 +04:09:22  5.6  0.66 141
PPM 149935     06:08:39.8 +04:24:00  8.5  0.42 141
PPM 149943     06:08:56.1 +03:58:54  9.1  0.10 140
523764         06:08:31.2 +03:58:45 15.0       140
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 13.1 km RECON observability=1.0 and success probability=18.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 08:49:55 -53.9 Dark Down 37.0 139.5 Up 08:40:15 - 08:59:34 2321
Penticton 08:49:57 -54.3 Dark Down 37.2 139.2 Up 08:40:18 - 08:59:37 2307
Okanagan Falls 08:49:58 -54.5 Dark Down 37.4 139.1 Up 08:40:18 - 08:59:37 2298
Southern Okanagan 08:49:59 -54.6 Dark Down 37.5 139.0 Up 08:40:19 - 08:59:38 2289
Oroville 08:49:59 -54.8 Dark Down 37.7 139.0 Up 08:40:20 - 08:59:39 2273
Tonasket 08:49:59 -55.0 Dark Down 37.9 138.9 Up 08:40:20 - 08:59:39 2261
Okanogan 08:50:01 -55.3 Dark Down 38.1 138.6 Up 08:40:22 - 08:59:41 2248
Brewster 08:50:03 -55.6 Dark Down 38.2 138.2 Up 08:40:23 - 08:59:42 2240
Manson/Chelan 08:50:05 -55.9 Dark Down 38.2 137.7 Up 08:40:25 - 08:59:44 2240
Entiat 08:50:07 -56.1 Dark Down 38.4 137.5 Up 08:40:28 - 08:59:47 2230
Wenatchee 08:50:07 -56.4 Dark Down 38.5 137.2 Up 08:40:28 - 08:59:47 2219
Ellensburg 08:50:10 -56.8 Dark Down 38.7 136.8 Up 08:40:31 - 08:59:50 2204
Yakima 08:50:12 -57.2 Dark Down 39.0 136.5 Up 08:40:33 - 08:59:52 2182
Toppenish/White Swan 08:50:13 -57.3 Dark Down 39.2 136.6 Up 08:40:34 - 08:59:53 2165
Goldendale 08:50:16 -57.9 Dark Down 39.4 135.8 Up 08:40:37 - 08:59:56 2147
The Dalles 08:50:19 -58.2 Dark Down 39.4 135.3 Up 08:40:40 - 08:59:59 2146
Pasco 08:50:09 -57.0 Dark Down 39.9 138.0 Up 08:40:29 - 08:59:48 2120
Maupin 08:50:20 -58.6 Dark Down 39.8 135.2 Up 08:40:40 - 08:59:59 2119
George/Umatilla 08:50:11 -57.3 Dark Down 40.1 137.6 Up 08:40:31 - 08:59:50 2108
PNWRO 08:50:09 -57.1 Dark Down 40.2 138.1 Up 08:40:30 - 08:59:49 2099
Madras/Culver 08:50:23 -59.1 Dark Down 40.2 134.8 Up 08:40:43 - 09:00:02 2090
Sisters 08:50:25 -59.5 Dark Down 40.2 134.1 Up 08:40:46 - 09:00:05 2085
Redmond 08:50:24 -59.4 Dark Down 40.4 134.6 Up 08:40:45 - 09:00:04 2071
Bend 08:50:26 -59.6 Dark Down 40.5 134.3 Up 08:40:47 - 09:00:06 2063
Oregon Observatory 08:50:27 -59.8 Dark Down 40.5 134.0 Up 08:40:47 - 09:00:06 2057
La Pine/Gilchrist 08:50:28 -60.0 Dark Down 40.6 133.8 Up 08:40:48 - 09:00:07 2047
North Lake 08:50:28 -60.2 Dark Down 41.2 134.3 Up 08:40:48 - 09:00:07 2002
Chiloquin 08:50:34 -61.1 Dark Down 41.2 132.8 Up 08:40:55 - 09:00:14 1992
Klamath Falls 08:50:36 -61.4 Dark Down 41.5 132.7 Up 08:40:56 - 09:00:15 1969
Paisley 08:50:29 -60.5 Dark Down 41.8 134.3 Up 08:40:49 - 09:00:08 1958
Tulelake 08:50:36 -61.5 Dark Down 41.8 132.8 Up 08:40:56 - 09:00:15 1943
Lakeview 08:50:31 -60.8 Dark Down 42.3 134.2 Up 08:40:51 - 09:00:10 1920
Fall River/Burney 08:50:39 -62.2 Dark Down 42.5 132.3 Up 08:41:00 - 09:00:19 1884
Cedarville 08:50:33 -61.3 Dark Down 42.8 134.0 Up 08:40:53 - 09:00:12 1874
Susanville 08:50:39 -62.4 Dark Down 43.4 132.7 Up 08:41:00 - 09:00:19 1820
Greenville 08:50:42 -62.8 Dark Down 43.4 132.2 Up 08:41:02 - 09:00:21 1812
Gimple 08:50:41 -62.7 Dark Down 43.4 132.3 Up 08:41:01 - 09:00:20 1809
Quincy 08:50:42 -62.9 Dark Down 43.5 132.1 Up 08:41:02 - 09:00:21 1799
Portola 08:50:41 -62.8 Dark Down 43.9 132.5 Up 08:41:01 - 09:00:20 1775
Reno 08:50:40 -62.7 Dark Down 44.4 133.1 Up 08:41:01 - 09:00:20 1736
Carson City 08:50:41 -63.0 Dark Down 44.7 132.8 Up 08:41:02 - 09:00:21 1712
Gardnerville 08:50:42 -63.2 Dark Down 44.9 132.7 Up 08:41:02 - 09:00:21 1694
Yerington 08:50:40 -62.8 Dark Down 45.2 133.4 Up 08:41:00 - 09:00:19 1677
Hawthorne 08:50:39 -62.9 Dark Down 45.8 133.7 Up 08:41:00 - 09:00:19 1628
Lee Vining 08:50:44 -63.6 Dark Down 45.9 132.7 Up 08:41:05 - 09:00:24 1607
Tonopah 08:50:36 -62.5 Dark Down 46.9 135.0 Up 08:40:56 - 09:00:15 1546
Bishop 08:50:43 -63.7 Dark Down 46.7 133.1 Up 08:41:03 - 09:00:22 1540
CPSLO 08:51:01 -66.4 Dark Down 46.7 128.9 Up 08:41:21 - 09:00:40 1478
Lone Pine 08:50:46 -64.0 Dark Down 47.5 132.9 Up 08:41:06 - 09:00:25 1476
Beatty 08:50:39 -63.1 Dark Down 48.0 134.7 Up 08:40:59 - 09:00:18 1450
Indian Springs 08:50:36 -62.7 Dark Down 48.8 135.8 Up 08:40:56 - 09:00:15 1388
Henderson 08:50:35 -62.6 Dark Down 49.6 136.2 Up 08:40:56 - 09:00:15 1324
Wildwood 08:50:57 -66.1 Dark Down 48.8 130.3 Up 08:41:18 - 09:00:37 1316
Searchlight/Boulder City 08:50:37 -62.9 Dark Down 50.0 135.8 Up 08:40:57 - 09:00:16 1280
Niwot 08:49:39 -54.1 Dark Down 50.7 152.4 Up 08:40:00 - 08:59:19 1257
Laughlin/Bullhead City 08:50:37 -62.9 Dark Down 50.5 136.0 Up 08:40:57 - 09:00:16 1246
Patrick 08:50:32 -62.3 Dark Down 50.7 137.1 Up 08:40:53 - 09:00:12 1237
Kingman/Dolan Springs 08:50:34 -62.5 Dark Down 50.7 136.7 Up 08:40:54 - 09:00:13 1228
Mohave Valley 08:50:37 -63.0 Dark Down 50.7 135.8 Up 08:40:58 - 09:00:17 1225
Idyllwild 08:50:51 -65.1 Dark Down 50.2 132.2 Up 08:41:11 - 09:00:30 1220
DCO 08:50:30 -62.0 Dark Down 51.3 137.8 Up 08:40:51 - 09:00:10 1188
Lake Havasu City 08:50:38 -63.1 Dark Down 51.1 135.8 Up 08:40:59 - 09:00:18 1186
Parker 08:50:39 -63.3 Dark Down 51.4 135.5 Up 08:41:00 - 09:00:19 1159
Blythe 08:50:42 -63.8 Dark Down 51.6 134.7 Up 08:41:03 - 09:00:22 1131
Calipatria 08:50:48 -64.7 Dark Down 51.4 133.1 Up 08:41:09 - 09:00:28 1130
Yuma 08:50:46 -64.3 Dark Down 52.2 133.8 Up 08:41:07 - 09:00:26 1063

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 523764, (2018/11/08 08:50UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.60 144
34Del Ori      05:32:00.4 -00:17:57  2.2  9.85 147
66 Ori         06:04:58.3 +04:09:31  5.6  0.66 141
PPM 149935     06:07:39.9 +04:24:13  8.5  0.42 141
PPM 149943     06:07:56.3 +03:59:08  9.1  0.10 140
523764         06:07:31.5 +03:58:58 15.0       141
Positions are for J2000

Event circumstances last updated at 2018/10/11 06:08:26 UT

Marc W. Buie, Southwest Research Institute

RECON