RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star UC4-553-014159 with event index number of 112745

Geocentric closest approach at 2018/01/16 04:24:52 UTC

J2000 position of star is 05:20:32.7 +20:29:29
Equinox of date position of star is 05:21:33.5 +20:30:27
Stellar brightness R=15.6, use SENSEUP=128
Star is 155 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.2

[RECON map]
TNO is 24.5 AU from the Sun and 23.7 AU from the Earth.
The TNO is moving 18.9 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 85 seconds.
The 1-sigma cross-track error in the shadow position is 939 km.
The sky-plane scale is 17164.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 11.6 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2018/01/16 04:25UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:57.5 +16:32:39  0.8 11.30 144
Alnath         05:27:26.0 +28:37:16  1.6  8.22 155
PPM 120839     05:21:22.2 +19:35:43  6.5  0.91 155
PPM 094285     05:21:42.4 +20:50:49  8.0  0.34 155
463368         05:21:37.1 +20:30:30 15.6       155
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 23.4 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 04:25:42 -38.2 Dark Down 58.3 147.4 Up 04:18:08 - 04:33:16 6332
Tonasket 04:25:43 -38.2 Dark Down 58.5 147.3 Up 04:18:09 - 04:33:17 6310
Okanogan 04:25:44 -38.2 Dark Down 58.7 146.7 Up 04:18:10 - 04:33:18 6281
Brewster 04:25:45 -38.1 Dark Down 58.9 146.1 Up 04:18:11 - 04:33:19 6259
Manson/Chelan 04:25:47 -37.9 Dark Down 58.9 145.3 Up 04:18:13 - 04:33:21 6245
Entiat 04:25:48 -37.9 Dark Down 59.0 145.0 Up 04:18:14 - 04:33:22 6225
Wenatchee 04:25:49 -37.9 Dark Down 59.2 144.6 Up 04:18:15 - 04:33:23 6203
Ellensburg 04:25:50 -37.8 Dark Down 59.5 143.9 Up 04:18:16 - 04:33:24 6168
Yakima 04:25:51 -37.9 Dark Down 59.8 143.4 Up 04:18:17 - 04:33:25 6129
Toppenish/White Swan 04:25:51 -38.0 Dark Down 60.0 143.5 Up 04:18:17 - 04:33:25 6106
Pasco 04:25:46 -38.9 Dark Down 60.6 145.5 Up 04:18:12 - 04:33:20 6074
Goldendale 04:25:53 -37.8 Dark Down 60.3 142.2 Up 04:18:19 - 04:33:27 6060
PNWRO 04:25:46 -39.1 Dark Down 60.9 145.6 Up 04:18:12 - 04:33:20 6047
George/Umatilla 04:25:47 -38.8 Dark Down 60.8 144.8 Up 04:18:13 - 04:33:21 6045
The Dalles 04:25:55 -37.6 Dark Down 60.3 141.4 Up 04:18:21 - 04:33:29 6045
Maupin 04:25:56 -37.7 Dark Down 60.7 141.1 Up 04:18:22 - 04:33:30 6003
Madras/Culver 04:25:57 -37.8 Dark Down 61.1 140.4 Up 04:18:23 - 04:33:31 5951
Sisters 04:26:00 -37.5 Dark Down 61.2 139.2 Up 04:18:26 - 04:33:34 5926
Redmond 04:25:58 -37.8 Dark Down 61.4 139.9 Up 04:18:24 - 04:33:32 5917
Bend 04:25:59 -37.7 Dark Down 61.5 139.4 Up 04:18:25 - 04:33:33 5899
Oregon Observatory 04:26:00 -37.7 Dark Down 61.5 139.0 Up 04:18:26 - 04:33:34 5884
La Pine/Gilchrist 04:26:00 -37.6 Dark Down 61.6 138.6 Up 04:18:26 - 04:33:34 5865
North Lake 04:25:59 -38.1 Dark Down 62.3 139.1 Up 04:18:25 - 04:33:33 5813
Chiloquin 04:26:03 -37.5 Dark Down 62.3 136.6 Up 04:18:29 - 04:33:37 5763
Paisley 04:25:59 -38.4 Dark Down 62.9 139.1 Up 04:18:25 - 04:33:33 5752
Klamath Falls 04:26:04 -37.6 Dark Down 62.6 136.3 Up 04:18:30 - 04:33:38 5728
Lakeview 04:25:59 -38.6 Dark Down 63.3 138.7 Up 04:18:25 - 04:33:33 5699
Tulelake 04:26:03 -37.8 Dark Down 62.9 136.5 Up 04:18:29 - 04:33:37 5696
Cedarville 04:25:59 -38.8 Dark Down 63.9 138.2 Up 04:18:25 - 04:33:33 5631
Fall River/Burney 04:26:05 -38.0 Dark Down 63.6 135.4 Up 04:18:31 - 04:33:39 5604
Susanville 04:26:03 -38.6 Dark Down 64.5 135.8 Up 04:18:29 - 04:33:37 5528
Greenville 04:26:04 -38.4 Dark Down 64.5 134.8 Up 04:18:30 - 04:33:38 5506
Gimple 04:26:04 -38.5 Dark Down 64.6 135.0 Up 04:18:30 - 04:33:38 5504
Quincy 04:26:05 -38.4 Dark Down 64.7 134.5 Up 04:18:31 - 04:33:39 5485
Portola 04:26:03 -38.8 Dark Down 65.0 135.2 Up 04:18:29 - 04:33:37 5464
Reno 04:26:02 -39.3 Dark Down 65.5 136.0 Up 04:18:28 - 04:33:36 5426
Carson City 04:26:01 -39.3 Dark Down 65.8 135.5 Up 04:18:27 - 04:33:35 5389
Gardnerville 04:26:02 -39.4 Dark Down 66.0 135.2 Up 04:18:28 - 04:33:36 5363
Yerington 04:25:59 -39.8 Dark Down 66.3 136.3 Up 04:18:25 - 04:33:33 5358
Hawthorne 04:25:58 -40.3 Dark Down 66.9 136.6 Up 04:18:24 - 04:33:32 5301
Niwot 04:24:56 -50.1 Dark Down 70.2 170.3 Up 04:17:22 - 04:32:30 5272
Lee Vining 04:26:01 -39.9 Dark Down 67.1 134.8 Up 04:18:27 - 04:33:35 5253
Tonopah 04:25:52 -41.4 Dark Down 68.0 138.7 Up 04:18:18 - 04:33:26 5229
Bishop 04:25:59 -40.5 Dark Down 67.9 135.1 Up 04:18:25 - 04:33:33 5178
Beatty 04:25:52 -41.9 Dark Down 69.1 137.7 Up 04:18:18 - 04:33:26 5102
Lone Pine 04:25:58 -40.9 Dark Down 68.6 134.5 Up 04:18:24 - 04:33:32 5094
Indian Springs 04:25:47 -42.7 Dark Down 69.9 139.4 Up 04:18:13 - 04:33:21 5050
CPSLO 04:26:11 -38.8 Dark Down 67.9 127.1 Up 04:18:37 - 04:33:45 5008
Henderson 04:25:45 -43.3 Dark Down 70.7 140.0 Up 04:18:11 - 04:33:19 4983
Searchlight/Boulder City 04:25:45 -43.4 Dark Down 71.1 139.1 Up 04:18:11 - 04:33:19 4922
Patrick 04:25:41 -44.3 Dark Down 71.7 141.6 Up 04:18:07 - 04:33:15 4899
Laughlin/Bullhead City 04:25:44 -43.7 Dark Down 71.6 139.4 Up 04:18:10 - 04:33:18 4885
Kingman/Dolan Springs 04:25:42 -44.1 Dark Down 71.8 140.7 Up 04:18:08 - 04:33:16 4879
Mohave Valley 04:25:45 -43.7 Dark Down 71.8 138.8 Up 04:18:11 - 04:33:19 4856
DCO 04:25:38 -44.9 Dark Down 72.3 142.8 Up 04:18:04 - 04:33:12 4856
Wildwood 04:26:04 -40.5 Dark Down 70.0 128.4 Up 04:18:30 - 04:33:38 4843
Lake Havasu City 04:25:44 -44.0 Dark Down 72.2 138.6 Up 04:18:10 - 04:33:18 4810
Parker 04:25:44 -44.0 Dark Down 72.5 138.0 Up 04:18:10 - 04:33:18 4773
Idyllwild 04:25:56 -42.1 Dark Down 71.4 131.5 Up 04:18:22 - 04:33:30 4771
Blythe 04:25:46 -43.8 Dark Down 72.7 136.1 Up 04:18:12 - 04:33:20 4722
Calipatria 04:25:52 -43.0 Dark Down 72.5 132.8 Up 04:18:18 - 04:33:26 4686
Yuma 04:25:48 -43.8 Dark Down 73.3 133.9 Up 04:18:14 - 04:33:22 4625

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, (2018/01/16 04:25UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 11.30 144
Alnath         05:26:17.5 +28:36:24  1.6  8.22 155
PPM 120839     05:20:18.3 +19:34:41  6.5  0.91 155
PPM 094285     05:20:37.9 +20:49:48  8.0  0.34 155
463368         05:20:32.7 +20:29:29 15.6       155
Positions are for J2000

Event circumstances last updated at 2017/01/21 18:02:44 UT

Marc W. Buie, Southwest Research Institute

RECON