RECON: TNO occultation with 523764

Event between (523764) 14WC510 and star GA0920:01067763 with event index number of 348076

Geocentric closest approach at 2018/12/01 12:21:23 UTC

J2000 position of star is 06:05:33.4 +03:50:02
Equinox of date position of star is 06:06:33.0 +03:49:52
Stellar brightness G=15.4, use SENSEUP=128
Star is 89 degrees from the moon. Moon is 34% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 30.5 AU from the Sun and 29.6 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 86 seconds.
The 1-sigma cross-track error in the shadow position is 1100 km.
The sky-plane scale is 21468.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 9.7 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523764, (2018/12/01 12:21UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.8 +07:24:33  0.4  4.41  91
34Del Ori      05:32:58.4 -00:17:12  2.2  9.35  97
66 Ori         06:05:58.4 +04:09:22  5.6  0.36  89
PPM 149826     06:04:26.1 +03:51:36  8.0  0.53  89
PPM 149883     06:06:45.1 +03:47:14  9.6  0.07  89
523764         06:06:33.3 +03:49:52 15.4        89
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 20.8 km RECON observability=1.0 and success probability=35.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 12:18:42 -30.5 Dark Up 30.8 234.1 Up 12:11:00 - 12:26:23 1665
Summerland 12:18:43 -30.8 Dark Up 31.0 233.7 Up 12:11:01 - 12:26:24 1664
Penticton 12:18:41 -30.7 Dark Up 31.1 234.1 Up 12:11:00 - 12:26:23 1636
Okanagan Falls 12:18:41 -30.7 Dark Up 31.2 234.2 Up 12:11:00 - 12:26:23 1620
Oliver 12:18:41 -30.7 Dark Up 31.3 234.3 Up 12:10:59 - 12:26:22 1605
Anarchist Mountain Observatory 12:18:40 -30.5 Dark Up 31.3 234.5 Up 12:10:58 - 12:26:21 1589
Oroville 12:18:40 -30.6 Dark Up 31.4 234.5 Up 12:10:58 - 12:26:21 1584
Tonasket 12:18:39 -30.6 Dark Up 31.5 234.6 Up 12:10:58 - 12:26:21 1563
Okanogan 12:18:39 -30.7 Dark Up 31.8 234.6 Up 12:10:57 - 12:26:20 1535
Brewster 12:18:39 -30.8 Dark Up 32.1 234.6 Up 12:10:57 - 12:26:20 1513
Manson/Chelan 12:18:40 -31.1 Dark Up 32.4 234.3 Up 12:10:58 - 12:26:21 1497
Entiat 12:18:39 -31.1 Dark Up 32.5 234.4 Up 12:10:58 - 12:26:21 1478
Wenatchee 12:18:39 -31.2 Dark Up 32.8 234.4 Up 12:10:57 - 12:26:20 1457
Ellensburg 12:18:39 -31.4 Dark Up 33.1 234.4 Up 12:10:57 - 12:26:20 1422
Yakima 12:18:38 -31.4 Dark Up 33.4 234.6 Up 12:10:57 - 12:26:20 1386
Toppenish/White Swan 12:18:38 -31.3 Dark Up 33.4 234.9 Up 12:10:56 - 12:26:19 1366
Pasco 12:18:34 -30.4 Dark Up 32.7 236.2 Up 12:10:53 - 12:26:16 1347
PNWRO 12:18:33 -30.3 Dark Up 32.8 236.5 Up 12:10:52 - 12:26:15 1323
Goldendale 12:18:38 -31.6 Dark Up 34.0 234.7 Up 12:10:56 - 12:26:19 1319
George/Umatilla 12:18:34 -30.6 Dark Up 33.1 236.1 Up 12:10:53 - 12:26:16 1318
The Dalles 12:18:38 -31.8 Dark Up 34.3 234.5 Up 12:10:57 - 12:26:20 1301
Maupin 12:18:37 -31.8 Dark Up 34.5 234.8 Up 12:10:56 - 12:26:19 1263
Madras/Culver 12:18:36 -31.8 Dark Up 34.8 235.1 Up 12:10:55 - 12:26:18 1214
Sisters 12:18:37 -32.1 Dark Up 35.3 234.9 Up 12:10:56 - 12:26:19 1187
Redmond 12:18:36 -31.8 Dark Up 35.0 235.3 Up 12:10:54 - 12:26:17 1182
Bend 12:18:36 -31.9 Dark Up 35.3 235.2 Up 12:10:54 - 12:26:17 1163
Oregon Observatory 12:18:36 -32.0 Dark Up 35.4 235.2 Up 12:10:55 - 12:26:18 1148
La Pine/Gilchrist 12:18:36 -32.1 Dark Up 35.6 235.3 Up 12:10:54 - 12:26:17 1130
North Lake 12:18:34 -31.6 Dark Up 35.5 236.1 Up 12:10:52 - 12:26:15 1086
Paisley 12:18:32 -31.4 Dark Up 35.6 236.8 Up 12:10:50 - 12:26:13 1032
Chiloquin 12:18:35 -32.3 Dark Up 36.4 235.6 Up 12:10:54 - 12:26:17 1030
Klamath Falls 12:18:35 -32.3 Dark Up 36.6 235.9 Up 12:10:53 - 12:26:16 998
Lakeview 12:18:31 -31.2 Dark Up 35.7 237.3 Up 12:10:49 - 12:26:12 984
Tulelake 12:18:33 -32.0 Dark Up 36.5 236.3 Up 12:10:52 - 12:26:15 970
Cedarville 12:18:29 -31.1 Dark Up 36.0 237.8 Up 12:10:48 - 12:26:11 921
Fall River/Burney 12:18:32 -31.9 Dark Up 37.0 237.0 Up 12:10:50 - 12:26:13 884
Susanville 12:18:29 -31.4 Dark Up 36.9 238.1 Up 12:10:47 - 12:26:10 819
Greenville 12:18:29 -31.6 Dark Up 37.2 238.0 Up 12:10:47 - 12:26:10 795
Gimple 12:18:29 -31.5 Dark Up 37.2 238.1 Up 12:10:47 - 12:26:10 794
Quincy 12:18:29 -31.6 Dark Up 37.3 238.1 Up 12:10:47 - 12:26:10 776
Portola 12:18:28 -31.2 Dark Up 37.1 238.6 Up 12:10:46 - 12:26:09 760
Reno 12:18:25 -30.7 Dark Up 36.8 239.4 Up 12:10:44 - 12:26:07 730
Niwot 12:17:52 -19.7 Dark Up 26.4 251.3 Low 12:10:10 - 12:25:33 708
Carson City 12:18:24 -30.6 Dark Up 36.9 239.7 Up 12:10:43 - 12:26:06 695
Yerington 12:18:23 -30.1 Dark Up 36.6 240.4 Up 12:10:41 - 12:26:04 672
Gardnerville 12:18:24 -30.6 Dark Up 37.0 239.9 Up 12:10:43 - 12:26:06 671
Hawthorne 12:18:21 -29.7 Dark Up 36.5 241.1 Up 12:10:39 - 12:26:02 623
Lee Vining 12:18:21 -30.0 Dark Up 37.1 241.1 Up 12:10:39 - 12:26:02 572
Tonopah 12:18:16 -28.6 Dark Up 35.7 242.7 Up 12:10:35 - 12:25:58 568
Bishop 12:18:18 -29.4 Dark Up 36.9 242.1 Up 12:10:37 - 12:26:00 508
Beatty 12:18:13 -28.1 Dark Up 36.0 243.8 Up 12:10:32 - 12:25:55 452
Lone Pine 12:18:16 -29.1 Dark Up 37.0 242.9 Up 12:10:35 - 12:25:58 431
Indian Springs 12:18:10 -27.2 Dark Up 35.3 244.9 Up 12:10:28 - 12:25:51 412
Henderson 12:18:07 -26.6 Dark Up 35.0 245.8 Up 12:10:26 - 12:25:49 355
CPSLO 12:18:22 -31.0 Dark Up 39.5 241.5 Up 12:10:41 - 12:26:04 321
Searchlight/Boulder City 12:18:06 -26.4 Dark Up 35.2 246.3 Up 12:10:25 - 12:25:48 297
Patrick 12:18:03 -25.6 Dark Up 34.5 247.1 Up 12:10:22 - 12:25:45 286
Laughlin/Bullhead City 12:18:05 -26.1 Dark Up 35.1 246.7 Up 12:10:24 - 12:25:47 265
Kingman/Dolan Springs 12:18:03 -25.7 Dark Up 34.7 247.1 Up 12:10:22 - 12:25:45 264
DCO 12:18:01 -25.0 Dark Up 34.1 247.9 Up 12:10:20 - 12:25:43 251
Mohave Valley 12:18:05 -26.0 Dark Up 35.2 246.9 Up 12:10:23 - 12:25:46 238
Lake Havasu City 12:18:03 -25.8 Dark Up 35.2 247.4 Up 12:10:22 - 12:25:45 196
Wildwood 12:18:15 -29.2 Dark Up 38.5 244.2 Up 12:10:33 - 12:25:56 184
Parker 12:18:03 -25.7 Dark Up 35.3 247.6 Up 12:10:21 - 12:25:44 160
Idyllwild 12:18:09 -27.6 Dark Up 37.3 246.0 Up 12:10:28 - 12:25:51 135
Blythe 12:18:03 -25.9 Dark Up 35.7 247.7 Up 12:10:21 - 12:25:44 109
Calipatria 12:18:05 -26.5 Dark Up 36.6 247.3 Up 12:10:23 - 12:25:46 65
Yuma 12:18:02 -25.7 Dark Up 36.1 248.3 Up 12:10:21 - 12:25:44 15

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, (2018/12/01 12:21UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  4.41  91
34Del Ori      05:32:00.4 -00:17:57  2.2  9.35  97
66 Ori         06:04:58.3 +04:09:31  5.6  0.36  89
PPM 149826     06:03:26.2 +03:51:43  8.0  0.53  89
PPM 149883     06:05:45.3 +03:47:24  9.6  0.07  89
523764         06:05:33.4 +03:50:02 15.4        89
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:08:01 UT

Marc W. Buie, Southwest Research Institute

RECON