RECON: TNO occultation with 127546

Event between (127546) 02XU93 and star GA1640:01226860 with event index number of 153472

Geocentric closest approach at 2018/11/06 09:49:50 UTC

J2000 position of star is 13:59:41.3 +74:27:57
Equinox of date position of star is 13:59:53.9 +74:22:37
Stellar brightness G=16.5, use SENSEUP=128
Star is 81 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 23.8 AU from the Sun and 23.8 AU from the Earth.
The TNO is moving 33.8 km/sec on the sky relative to the star, or, 7.0 arcsec/hr.
The 1-sigma error in the time of the event is 139 seconds.
The 1-sigma cross-track error in the shadow position is 2140 km.
The sky-plane scale is 17272.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 4.5 sec chord
Diameter=61.8 km assuming a 30% albedo -- 1.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 127546, (2018/11/06 09:50UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:04.5 +45:20:54  1.3 49.42 103
Kochab         14:50:40.2 +74:04:42  2.1  3.46  81
5 UMi          14:27:30.4 +75:36:44  4.3  2.17  82
PPM 008502     13:49:46.0 +75:28:26  8.0  1.28  82
PPM 008565     14:05:40.8 +74:37:30  8.7  0.46  81
PPM 008542     14:00:53.7 +74:37:56 11.5  0.27  81
127546         13:59:54.2 +74:22:29 16.5        81
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 6.3 km RECON observability=1.0 and success probability=13.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 09:48:16 -56.6 Dark Down 23.2 11.3 Low 09:36:11 - 10:00:20 -210
Wildwood 09:48:10 -55.7 Dark Down 22.4 11.6 Low 09:36:05 - 10:00:14 -297
Quincy 09:48:22 -54.5 Dark Down 27.7 11.6 Low 09:36:18 - 10:00:27 -323
Greenville 09:48:22 -54.4 Dark Down 27.9 11.7 Low 09:36:18 - 10:00:27 -329
Gimple 09:48:22 -54.3 Dark Down 27.9 11.7 Low 09:36:18 - 10:00:27 -334
Fall River/Burney 09:48:24 -54.1 Dark Down 28.8 11.6 Low 09:36:20 - 10:00:29 -336
Portola 09:48:21 -54.2 Dark Down 27.7 11.7 Low 09:36:16 - 10:00:25 -344
Susanville 09:48:22 -54.0 Dark Down 28.2 11.8 Low 09:36:18 - 10:00:27 -353
Gardnerville 09:48:18 -54.2 Dark Down 26.9 11.8 Low 09:36:14 - 10:00:23 -355
Klamath Falls 09:48:27 -53.6 Dark Down 29.9 11.7 Low 09:36:22 - 10:00:31 -358
Carson City 09:48:19 -54.1 Dark Down 27.2 11.8 Low 09:36:14 - 10:00:23 -360
Lee Vining 09:48:16 -54.3 Dark Down 26.1 11.9 Low 09:36:11 - 10:00:20 -361
Tulelake 09:48:26 -53.6 Dark Down 29.6 11.7 Low 09:36:21 - 10:00:30 -363
Chiloquin 09:48:27 -53.5 Dark Down 30.2 11.7 Up 09:36:23 - 10:00:32 -367
Reno 09:48:19 -54.0 Dark Down 27.5 11.9 Low 09:36:15 - 10:00:24 -369
Lone Pine 09:48:12 -54.2 Dark Down 24.9 12.0 Low 09:36:07 - 10:00:16 -385
Bishop 09:48:13 -54.1 Dark Down 25.6 12.0 Low 09:36:09 - 10:00:18 -385
Yerington 09:48:17 -53.8 Dark Down 27.1 12.0 Low 09:36:13 - 10:00:22 -388
Idyllwild 09:48:05 -54.4 Dark Down 22.3 12.0 Low 09:36:01 - 10:00:10 -401
Hawthorne 09:48:16 -53.7 Dark Down 26.7 12.0 Low 09:36:11 - 10:00:20 -403
Cedarville 09:48:23 -53.1 Dark Down 29.4 12.0 Low 09:36:18 - 10:00:27 -414
La Pine/Gilchrist 09:48:28 -52.6 Dark Down 31.3 11.9 Up 09:36:24 - 10:00:33 -424
Lakeview 09:48:24 -52.8 Dark Down 30.0 12.0 Up 09:36:19 - 10:00:28 -427
Oregon Observatory 09:48:28 -52.4 Dark Down 31.5 12.0 Up 09:36:24 - 10:00:33 -434
Paisley 09:48:25 -52.6 Dark Down 30.5 12.1 Up 09:36:20 - 10:00:29 -435
North Lake 09:48:27 -52.5 Dark Down 31.0 12.0 Up 09:36:22 - 10:00:31 -437
Sisters 09:48:29 -52.2 Dark Down 31.9 12.0 Up 09:36:25 - 10:00:34 -444
Bend 09:48:28 -52.2 Dark Down 31.7 12.0 Up 09:36:24 - 10:00:33 -447
Calipatria 09:48:02 -53.6 Dark Down 22.0 12.2 Low 09:35:58 - 10:00:07 -461
Redmond 09:48:28 -52.0 Dark Down 31.9 12.1 Up 09:36:24 - 10:00:33 -462
Beatty 09:48:10 -53.1 Dark Down 25.4 12.3 Low 09:36:05 - 10:00:14 -466
Tonopah 09:48:12 -52.9 Dark Down 26.5 12.3 Low 09:36:08 - 10:00:17 -469
Madras/Culver 09:48:29 -51.8 Dark Down 32.3 12.2 Up 09:36:24 - 10:00:33 -478
Maupin 09:48:30 -51.4 Dark Down 32.8 12.2 Up 09:36:25 - 10:00:34 -501
Yuma 09:48:00 -53.1 Dark Down 21.7 12.4 Low 09:35:56 - 10:00:05 -510
The Dalles 09:48:30 -51.2 Dark Down 33.2 12.3 Up 09:36:26 - 10:00:35 -512
Indian Springs 09:48:07 -52.5 Dark Down 25.3 12.5 Low 09:36:03 - 10:00:12 -522
Blythe 09:48:01 -52.8 Dark Down 22.6 12.5 Low 09:35:57 - 10:00:06 -528
Goldendale 09:48:30 -50.9 Dark Down 33.5 12.4 Up 09:36:26 - 10:00:35 -538
Searchlight/Boulder City 09:48:04 -52.4 Dark Down 24.4 12.6 Low 09:36:00 - 10:00:09 -543
Henderson 09:48:05 -52.2 Dark Down 24.9 12.6 Low 09:36:00 - 10:00:09 -551
Mohave Valley 09:48:03 -52.3 Dark Down 23.9 12.6 Low 09:35:58 - 10:00:07 -553
Parker 09:48:01 -52.3 Dark Down 23.2 12.6 Low 09:35:57 - 10:00:06 -556
Laughlin/Bullhead City 09:48:03 -52.2 Dark Down 24.1 12.6 Low 09:35:59 - 10:00:08 -558
Lake Havasu City 09:48:01 -52.2 Dark Down 23.5 12.6 Low 09:35:57 - 10:00:06 -561
Toppenish/White Swan 09:48:30 -50.3 Dark Down 34.1 12.6 Up 09:36:26 - 10:00:35 -580
Yakima 09:48:31 -50.2 Dark Down 34.3 12.6 Up 09:36:26 - 10:00:35 -581
Kingman/Dolan Springs 09:48:02 -51.8 Dark Down 24.2 12.7 Low 09:35:58 - 10:00:07 -590
Ellensburg 09:48:31 -50.0 Dark Down 34.7 12.6 Up 09:36:27 - 10:00:36 -598
Patrick 09:48:02 -51.6 Dark Down 24.5 12.8 Low 09:35:57 - 10:00:06 -606
George/Umatilla 09:48:27 -50.0 Dark Down 33.8 12.8 Up 09:36:23 - 10:00:32 -611
Wenatchee 09:48:32 -49.6 Dark Down 35.1 12.8 Up 09:36:27 - 10:00:36 -625
Pasco 09:48:28 -49.7 Dark Down 34.2 12.9 Up 09:36:23 - 10:00:32 -635
PNWRO 09:48:27 -49.7 Dark Down 34.0 12.9 Up 09:36:22 - 10:00:31 -636
Entiat 09:48:32 -49.4 Dark Down 35.4 12.8 Up 09:36:27 - 10:00:36 -640
DCO 09:48:00 -51.1 Dark Down 24.3 12.9 Low 09:35:56 - 10:00:05 -644
Manson/Chelan 09:48:32 -49.2 Dark Down 35.6 12.9 Up 09:36:28 - 10:00:37 -652
Brewster 09:48:32 -48.9 Dark Down 35.9 13.0 Up 09:36:27 - 10:00:36 -678
Okanogan 09:48:32 -48.6 Dark Down 36.2 13.1 Up 09:36:27 - 10:00:36 -698
Tonasket 09:48:32 -48.3 Dark Down 36.5 13.2 Up 09:36:28 - 10:00:37 -719
Oroville 09:48:33 -48.1 Dark Down 36.8 13.3 Up 09:36:28 - 10:00:37 -729
Penticton 09:48:34 -47.8 Dark Down 37.3 13.3 Up 09:36:29 - 10:00:38 -750
Niwot 09:47:55 -43.6 Dark Down 30.7 15.2 Up 09:35:50 - 09:59:59 -1254

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 127546, (2018/11/06 09:50UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 49.42 103
Kochab         14:50:42.2 +74:09:20  2.1  3.46  81
5 UMi          14:27:31.6 +75:41:46  4.3  2.17  82
PPM 008502     13:49:32.9 +75:34:01  8.0  1.28  82
PPM 008565     14:05:30.7 +74:42:52  8.7  0.46  81
PPM 008542     14:00:41.9 +74:43:23 11.5  0.27  81
127546         13:59:41.3 +74:27:57 16.5        81
Positions are for J2000

Event circumstances last updated at 2018/06/07 16:06:22 UT

Marc W. Buie, Southwest Research Institute

RECON