RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star UC4-550-017885 with event index number of 167456

Geocentric closest approach at 2018/12/01 13:16:11 UTC

J2000 position of star is 05:40:22.4 +19:59:04
Equinox of date position of star is 05:41:26.2 +19:59:34
Stellar brightness R=16.5, use SENSEUP=128
Star is 94 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 24.2 AU from the Sun and 23.2 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 97 seconds.
The 1-sigma cross-track error in the shadow position is 960 km.
The sky-plane scale is 16834.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 9.1 sec chord
Diameter=85.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2018/12/01 13:16UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.8 +07:24:33  0.4 13.08  92
Alnath         05:27:29.4 +28:37:18  1.6  9.20  96
123Zet Tau     05:38:46.6 +21:09:09  3.0  1.32  94
PPM 121239     05:41:16.8 +19:41:21  7.8  0.31  94
PPM 094669     05:42:19.1 +20:04:15  9.2  0.21  94
463368         05:41:29.7 +19:59:36 16.5        94
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 24.7 km RECON observability=0.9 and success probability=18.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 13:13:07 -21.7 Dark Up 31.8 264.3 Up 13:04:30 - 13:21:43 -1083
Tonasket 13:13:06 -21.7 Dark Up 31.9 264.4 Up 13:04:30 - 13:21:43 -1104
Okanogan 13:13:06 -21.7 Dark Up 32.0 264.5 Up 13:04:29 - 13:21:42 -1137
Brewster 13:13:05 -21.8 Dark Up 32.1 264.5 Up 13:04:29 - 13:21:42 -1165
Manson/Chelan 13:13:05 -22.0 Dark Up 32.4 264.3 Up 13:04:29 - 13:21:42 -1191
Entiat 13:13:05 -22.0 Dark Up 32.5 264.4 Up 13:04:28 - 13:21:41 -1213
Wenatchee 13:13:04 -22.1 Dark Up 32.6 264.5 Up 13:04:28 - 13:21:41 -1238
Ellensburg 13:13:03 -22.1 Dark Up 32.8 264.6 Up 13:04:27 - 13:21:40 -1280
Yakima 13:13:02 -22.1 Dark Up 32.8 264.8 Up 13:04:26 - 13:21:39 -1318
Pasco 13:12:59 -21.1 Dark Up 31.9 266.1 Up 13:04:23 - 13:21:36 -1322
Toppenish/White Swan 13:13:02 -21.9 Dark Up 32.7 265.1 Up 13:04:25 - 13:21:38 -1335
PNWRO 13:12:58 -20.9 Dark Up 31.7 266.5 Up 13:04:22 - 13:21:35 -1341
George/Umatilla 13:12:59 -21.2 Dark Up 32.0 266.2 Up 13:04:22 - 13:21:35 -1357
Goldendale 13:13:01 -22.2 Dark Up 33.1 265.1 Up 13:04:24 - 13:21:37 -1395
The Dalles 13:13:01 -22.4 Dark Up 33.3 265.0 Up 13:04:24 - 13:21:37 -1423
Maupin 13:12:59 -22.2 Dark Up 33.3 265.4 Up 13:04:23 - 13:21:36 -1460
Madras/Culver 13:12:59 -22.2 Dark Up 33.4 265.7 Up 13:04:22 - 13:21:35 -1513
Redmond 13:12:58 -22.2 Dark Up 33.4 265.9 Up 13:04:21 - 13:21:34 -1548
Sisters 13:12:59 -22.4 Dark Up 33.7 265.6 Up 13:04:22 - 13:21:35 -1553
Bend 13:12:57 -22.2 Dark Up 33.6 265.9 Up 13:04:21 - 13:21:34 -1571
Niwot 13:12:26 -9.7 CT Up 21.5 278.5 Low 13:03:49 - 13:21:02 -1577
Oregon Observatory 13:12:57 -22.3 Dark Up 33.7 265.9 Up 13:04:21 - 13:21:34 -1590
La Pine/Gilchrist 13:12:57 -22.3 Dark Up 33.7 266.0 Up 13:04:20 - 13:21:33 -1611
North Lake 13:12:55 -21.8 Dark Up 33.3 266.7 Up 13:04:18 - 13:21:31 -1640
Paisley 13:12:53 -21.5 Dark Up 33.1 267.3 Up 13:04:16 - 13:21:29 -1686
Chiloquin 13:12:55 -22.4 Dark Up 34.1 266.5 Up 13:04:18 - 13:21:31 -1725
Lakeview 13:12:51 -21.2 Dark Up 33.0 267.8 Up 13:04:15 - 13:21:28 -1732
Klamath Falls 13:12:54 -22.3 Dark Up 34.0 266.8 Up 13:04:17 - 13:21:30 -1756
Tulelake 13:12:53 -22.0 Dark Up 33.8 267.2 Up 13:04:16 - 13:21:29 -1776
Cedarville 13:12:49 -21.0 Dark Up 32.9 268.3 Up 13:04:13 - 13:21:26 -1792
Fall River/Burney 13:12:50 -21.8 Dark Up 33.8 267.8 Up 13:04:14 - 13:21:27 -1864
Susanville 13:12:48 -21.1 Dark Up 33.3 268.7 Up 13:04:11 - 13:21:24 -1910
Gimple 13:12:48 -21.2 Dark Up 33.4 268.8 Up 13:04:11 - 13:21:24 -1942
Greenville 13:12:48 -21.3 Dark Up 33.5 268.7 Up 13:04:11 - 13:21:24 -1943
Quincy 13:12:47 -21.2 Dark Up 33.5 268.9 Up 13:04:11 - 13:21:24 -1963
Portola 13:12:46 -20.9 Dark Up 33.1 269.3 Up 13:04:09 - 13:21:22 -1966
Reno 13:12:44 -20.3 Dark Up 32.7 269.8 Up 13:04:08 - 13:21:21 -1978
Carson City 13:12:43 -20.2 Dark Up 32.6 270.1 Up 13:04:07 - 13:21:20 -2013
Yerington 13:12:42 -19.7 Dark Up 32.2 270.6 Up 13:04:05 - 13:21:18 -2019
Gardnerville 13:12:43 -20.2 Dark Up 32.6 270.3 Up 13:04:06 - 13:21:19 -2037
Hawthorne 13:12:40 -19.2 Dark Up 31.7 271.2 Up 13:04:04 - 13:21:17 -2053
Tonopah 13:12:37 -18.0 Dark Up 30.6 272.3 Up 13:04:00 - 13:21:13 -2068
Lee Vining 13:12:40 -19.5 Dark Up 32.1 271.3 Up 13:04:03 - 13:21:16 -2120
Bishop 13:12:37 -18.8 Dark Up 31.5 272.1 Up 13:04:01 - 13:21:14 -2164
Beatty 13:12:33 -17.4 AT Up 30.2 273.3 Up 13:03:57 - 13:21:10 -2173
Indian Springs 13:12:30 -16.5 AT Up 29.3 274.1 Low 13:03:54 - 13:21:07 -2180
Henderson 13:12:28 -15.8 AT Up 28.7 274.8 Low 13:03:52 - 13:21:05 -2216
Lone Pine 13:12:35 -18.3 Dark Up 31.2 272.7 Up 13:03:58 - 13:21:11 -2232
Patrick 13:12:26 -14.8 AT Up 27.8 275.7 Low 13:03:49 - 13:21:02 -2252
DCO 13:12:24 -14.1 AT Up 27.2 276.2 Low 13:03:47 - 13:21:00 -2265
Searchlight/Boulder City 13:12:27 -15.6 AT Up 28.7 275.1 Low 13:03:51 - 13:21:04 -2272
Kingman/Dolan Springs 13:12:25 -14.9 AT Up 27.9 275.7 Low 13:03:49 - 13:21:02 -2279
Laughlin/Bullhead City 13:12:26 -15.3 AT Up 28.3 275.4 Low 13:03:50 - 13:21:03 -2294
Mohave Valley 13:12:26 -15.2 AT Up 28.3 275.6 Low 13:03:49 - 13:21:02 -2321
Lake Havasu City 13:12:24 -14.9 AT Up 28.1 275.9 Low 13:03:48 - 13:21:01 -2355
Parker 13:12:23 -14.8 AT Up 28.0 276.1 Low 13:03:47 - 13:21:00 -2389
CPSLO 13:12:37 -20.1 Dark Up 33.3 272.1 Up 13:04:01 - 13:21:14 -2421
Blythe 13:12:23 -14.9 AT Up 28.2 276.3 Low 13:03:46 - 13:20:59 -2450
Idyllwild 13:12:27 -16.6 AT Up 30.0 275.1 Low 13:03:50 - 13:21:03 -2490
Wildwood 13:12:31 -18.2 Dark Up 31.5 273.9 Up 13:03:54 - 13:21:07 -2498
Calipatria 13:12:24 -15.5 AT Up 28.9 276.1 Low 13:03:47 - 13:21:00 -2523
Yuma 13:12:22 -14.6 AT Up 28.1 276.7 Low 13:03:45 - 13:20:58 -2544

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 463368, (2018/12/01 13:16UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.08  92
Alnath         05:26:17.5 +28:36:24  1.6  9.20  96
123Zet Tau     05:37:38.7 +21:08:33  3.0  1.32  94
PPM 121239     05:40:09.6 +19:40:49  7.8  0.31  94
PPM 094669     05:41:11.7 +20:03:45  9.2  0.21  94
463368         05:40:22.4 +19:59:04 16.5        94
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:05:21 UT

Marc W. Buie, Southwest Research Institute

RECON