RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star UC4-388-078273 with event index number of 149862

Geocentric closest approach at 2018/04/25 11:11:00 UTC

J2000 position of star is 17:16:53.5 -12:32:54
Equinox of date position of star is 17:17:49.6 -12:33:56
Stellar brightness R=16.0
Star is 100 degrees from the moon. Moon is 77% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 28.7 AU from the Sun and 27.9 AU from the Earth.
The TNO is moving 15.7 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 136 seconds.
The 1-sigma cross-track error in the shadow position is 1278 km.
The sky-plane scale is 20263.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 12.7 sec chord
Diameter=81.5 km assuming a 30% albedo -- 5.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469362, (2018/04/25 11:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.0 -26:28:16  0.9 17.81  92
35Eta Oph      17:11:25.8 -15:44:47  2.6  3.55  99
53Nu Ser       17:21:51.5 -12:51:51  4.0  1.01 101
PPM 232885     17:18:53.4 -12:19:54  8.4  0.33 101
PPM 232864     17:17:58.2 -12:38:54  9.8  0.08 100
469362         17:17:55.1 -12:34:02 16.0       101
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 9.8 km RECON observability=0.9 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 11:13:09 -14.1 AT Up 28.5 183.4 Low 11:01:20 - 11:24:57 6826
Tonasket 11:13:10 -14.2 AT Up 28.7 183.4 Low 11:01:21 - 11:24:58 6815
Okanogan 11:13:08 -14.5 AT Up 29.0 183.2 Low 11:01:20 - 11:24:57 6795
Niwot 11:11:44 -10.8 CT Down 35.0 200.4 Up 10:59:55 - 11:23:32 6793
Brewster 11:13:09 -14.8 AT Up 29.3 183.0 Low 11:01:21 - 11:24:58 6776
Manson/Chelan 11:13:11 -15.1 AT Up 29.5 182.6 Low 11:01:22 - 11:24:59 6755
Entiat 11:13:10 -15.3 AT Up 29.8 182.5 Low 11:01:21 - 11:24:58 6742
Wenatchee 11:13:11 -15.5 AT Up 30.0 182.4 Up 11:01:22 - 11:24:59 6726
Pasco 11:13:03 -15.7 AT Down 31.1 183.8 Up 11:01:14 - 11:24:51 6704
Ellensburg 11:13:11 -15.9 AT Up 30.4 182.2 Up 11:01:22 - 11:24:59 6699
PNWRO 11:13:01 -15.7 AT Down 31.4 184.1 Up 11:01:13 - 11:24:50 6698
George/Umatilla 11:13:05 -16.0 AT Down 31.5 183.6 Up 11:01:16 - 11:24:53 6680
Yakima 11:13:09 -16.2 AT Up 30.8 182.2 Up 11:01:21 - 11:24:58 6678
Toppenish/White Swan 11:13:09 -16.3 AT Up 31.0 182.4 Up 11:01:20 - 11:24:57 6672
Goldendale 11:13:10 -16.8 AT Up 31.6 181.9 Up 11:01:21 - 11:24:58 6630
The Dalles 11:13:11 -17.2 AT Up 31.8 181.5 Up 11:01:22 - 11:24:59 6607
Maupin 11:13:10 -17.4 AT Up 32.3 181.6 Up 11:01:21 - 11:24:58 6588
Madras/Culver 11:13:09 -17.8 AT Up 32.8 181.6 Up 11:01:20 - 11:24:57 6557
Redmond 11:13:09 -18.0 Dark Up 33.2 181.5 Up 11:01:21 - 11:24:58 6536
Sisters 11:13:12 -18.2 Dark Up 33.1 181.1 Up 11:01:23 - 11:25:00 6525
Bend 11:13:09 -18.3 Dark Up 33.4 181.4 Up 11:01:20 - 11:24:57 6520
Oregon Observatory 11:13:10 -18.4 Dark Up 33.6 181.2 Up 11:01:21 - 11:24:58 6507
La Pine/Gilchrist 11:13:10 -18.6 Dark Up 33.8 181.2 Up 11:01:22 - 11:24:59 6493
North Lake 11:13:06 -18.6 Dark Up 34.2 181.9 Up 11:01:17 - 11:24:54 6488
Paisley 11:13:03 -18.7 Dark Down 34.7 182.3 Up 11:01:14 - 11:24:51 6469
Lakeview 11:13:01 -19.0 Dark Down 35.2 182.5 Up 11:01:13 - 11:24:50 6446
Chiloquin 11:13:09 -19.5 Dark Up 34.9 180.7 Up 11:01:20 - 11:24:57 6418
Cedarville 11:13:00 -19.3 Dark Down 35.9 182.7 Up 11:01:11 - 11:24:48 6414
Klamath Falls 11:13:08 -19.7 Dark Up 35.2 180.8 Up 11:01:20 - 11:24:57 6401
Tulelake 11:13:06 -19.7 Dark Up 35.5 181.2 Up 11:01:17 - 11:24:54 6395
Fall River/Burney 11:13:04 -20.3 Dark Down 36.4 181.3 Up 11:01:16 - 11:24:53 6344
Susanville 11:13:00 -20.3 Dark Down 37.0 182.2 Up 11:01:11 - 11:24:48 6331
Reno 11:12:54 -20.3 Dark Down 37.9 183.2 Up 11:01:06 - 11:24:43 6307
Greenville 11:13:00 -20.6 Dark Down 37.3 181.8 Up 11:01:12 - 11:24:49 6304
Tonopah 11:12:36 -19.7 Dark Down 39.2 186.5 Up 11:00:47 - 11:24:24 6303
Portola 11:12:57 -20.5 Dark Down 37.6 182.4 Up 11:01:09 - 11:24:46 6301
Yerington 11:12:49 -20.3 Dark Down 38.4 184.0 Up 11:01:01 - 11:24:38 6295
Quincy 11:13:00 -20.7 Dark Down 37.5 181.9 Up 11:01:12 - 11:24:49 6292
Carson City 11:12:53 -20.5 Dark Down 38.2 183.3 Up 11:01:04 - 11:24:41 6285
Hawthorne 11:12:46 -20.2 Dark Down 38.8 184.7 Up 11:00:57 - 11:24:34 6284
Gardnerville 11:12:52 -20.7 Dark Down 38.5 183.3 Up 11:01:04 - 11:24:41 6272
Indian Springs 11:12:27 -19.5 Dark Down 40.5 188.5 Up 11:00:39 - 11:24:16 6261
DCO 11:12:07 -18.7 Dark Down 41.6 191.9 Up 11:00:18 - 11:23:55 6252
Henderson 11:12:23 -19.4 Dark Down 40.9 189.5 Up 11:00:34 - 11:24:11 6250
Patrick 11:12:14 -19.0 Dark Down 41.4 191.0 Up 11:00:26 - 11:24:03 6247
Beatty 11:12:33 -20.0 Dark Down 40.3 187.1 Up 11:00:45 - 11:24:22 6245
Lee Vining 11:12:47 -20.9 Dark Down 39.4 184.1 Up 11:00:58 - 11:24:35 6232
Kingman/Dolan Springs 11:12:14 -19.2 Dark Down 41.6 190.7 Up 11:00:26 - 11:24:03 6226
Bishop 11:12:42 -20.8 Dark Down 39.9 185.1 Up 11:00:53 - 11:24:30 6219
Searchlight/Boulder City 11:12:21 -19.7 Dark Down 41.5 189.6 Up 11:00:32 - 11:24:09 6215
Laughlin/Bullhead City 11:12:18 -19.6 Dark Down 41.7 190.1 Up 11:00:29 - 11:24:06 6207
Mohave Valley 11:12:18 -19.8 Dark Down 42.0 190.1 Up 11:00:29 - 11:24:06 6189
Lone Pine 11:12:37 -21.1 Dark Down 40.7 185.5 Up 11:00:49 - 11:24:26 6181
Lake Havasu City 11:12:14 -19.8 Dark Down 42.4 190.5 Up 11:00:26 - 11:24:03 6171
Parker 11:12:14 -20.0 Dark Down 42.7 190.6 Up 11:00:26 - 11:24:03 6149
Blythe 11:12:15 -20.5 Dark Down 43.3 190.3 Up 11:00:26 - 11:24:03 6104
Yuma 11:12:11 -21.0 Dark Down 44.2 190.4 Up 11:00:22 - 11:23:59 6040
Idyllwild 11:12:26 -21.8 Dark Down 43.4 187.5 Up 11:00:37 - 11:24:14 6039
Calipatria 11:12:18 -21.4 Dark Down 43.9 189.2 Up 11:00:30 - 11:24:07 6038
CPSLO 11:12:50 -23.5 Dark Down 42.1 182.3 Up 11:01:01 - 11:24:38 6004
Wildwood 11:12:37 -22.9 Dark Down 43.2 185.0 Up 11:00:48 - 11:24:25 5996

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 469362, (2018/04/25 11:11UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 17.81  92
35Eta Oph      17:10:22.7 -15:43:29  2.6  3.55  99
53Nu Ser       17:20:49.7 -12:50:49  4.0  1.01 101
PPM 232885     17:17:51.8 -12:18:47  8.4  0.33 101
PPM 232864     17:16:56.5 -12:37:46  9.8  0.08 100
469362         17:16:53.5 -12:32:54 16.0       100
Positions are for J2000

Event circumstances last updated at 2016/09/01 18:23:52 UT

Marc W. Buie, Southwest Research Institute

RECON