RECON: TNO occultation with 14GA54

Event between 14GA54 and star UC4-411-065436 with event index number of 135070

Geocentric closest approach at 2017/05/22 10:41:29 UTC

J2000 position of star is 16:38:34.3 -07:51:39
Equinox of date position of star is 16:39:30.6 -07:53:39
Stellar brightness R=16.1, use SENSEUP=128
Star is 125 degrees from the moon. Moon is 16% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 31.8 AU from the Sun and 30.9 AU from the Earth.
The TNO is moving 23.3 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 422 seconds.
The 1-sigma cross-track error in the shadow position is 4210 km.
The sky-plane scale is 22383.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=234.4 km assuming a 5% albedo -- 10.1 sec chord
Diameter=95.7 km assuming a 30% albedo -- 4.1 sec chord
Dynamical classification is 8:5EEE
 
 
 
 
 
 

Star training set for 14GA54, (2017/05/22 10:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:28.6 -26:28:09  0.9 18.70 124
13Zet Oph      16:38:07.1 -10:36:04  2.6  2.73 125
PPM 199862     16:39:44.5 -08:39:07  6.4  0.76 125
PPM 199873     16:40:31.5 -07:32:44  8.0  0.43 125
PPM 199845     16:39:01.8 -07:40:09  9.7  0.26 125
14GA54         16:39:30.8 -07:53:39 16.1       125
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 2.1 sigma about the mid-time.
The median site spacing is 18.0 km RECON observability=0.7 and success probability=5.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:40:30 -11.4 CT Down 26.9 215.3 Low 10:25:30 - 10:55:30 1467
Tonasket 10:40:29 -11.6 CT Down 27.1 215.3 Low 10:25:29 - 10:55:29 1455
Okanogan 10:40:29 -11.9 CT Down 27.5 215.3 Low 10:25:29 - 10:55:29 1435
Brewster 10:40:29 -12.2 AT Down 27.8 215.1 Low 10:25:29 - 10:55:29 1419
Manson/Chelan 10:40:29 -12.5 AT Down 28.1 214.8 Low 10:25:29 - 10:55:29 1405
Entiat 10:40:29 -12.7 AT Down 28.3 214.8 Low 10:25:29 - 10:55:29 1392
Wenatchee 10:40:29 -12.9 AT Down 28.5 214.8 Low 10:25:29 - 10:55:29 1377
Ellensburg 10:40:29 -13.3 AT Down 28.9 214.7 Low 10:25:29 - 10:55:29 1352
Yakima 10:40:28 -13.7 AT Down 29.3 214.8 Low 10:25:28 - 10:55:28 1328
Toppenish/White Swan 10:40:27 -13.8 AT Down 29.4 215.0 Low 10:25:27 - 10:55:27 1316
Pasco 10:40:24 -13.3 AT Down 29.0 216.4 Low 10:25:24 - 10:55:24 1315
PNWRO 10:40:22 -13.4 AT Down 29.1 216.7 Low 10:25:22 - 10:55:22 1301
George/Umatilla 10:40:24 -13.7 AT Down 29.4 216.3 Low 10:25:24 - 10:55:24 1294
Goldendale 10:40:27 -14.4 AT Down 30.0 214.8 Up 10:25:27 - 10:55:27 1281
The Dalles 10:40:27 -14.7 AT Down 30.4 214.5 Up 10:25:27 - 10:55:27 1265
Maupin 10:40:26 -15.0 AT Down 30.7 214.7 Up 10:25:26 - 10:55:26 1240
Madras/Culver 10:40:26 -15.5 AT Down 31.1 214.9 Up 10:25:26 - 10:55:26 1207
Redmond 10:40:25 -15.8 AT Down 31.4 214.9 Up 10:25:25 - 10:55:25 1184
Sisters 10:40:26 -15.9 AT Down 31.6 214.5 Up 10:25:26 - 10:55:26 1184
Bend 10:40:25 -16.0 AT Down 31.7 214.8 Up 10:25:25 - 10:55:25 1170
Oregon Observatory 10:40:25 -16.2 AT Down 31.9 214.8 Up 10:25:25 - 10:55:25 1158
La Pine/Gilchrist 10:40:25 -16.4 AT Down 32.1 214.8 Up 10:25:25 - 10:55:25 1145
North Lake 10:40:22 -16.4 AT Down 32.2 215.6 Up 10:25:22 - 10:55:22 1120
Paisley 10:40:20 -16.7 AT Down 32.5 216.1 Up 10:25:20 - 10:55:20 1087
Chiloquin 10:40:24 -17.4 AT Down 33.1 214.8 Up 10:25:24 - 10:55:24 1071
Lakeview 10:40:18 -17.0 AT Down 32.8 216.5 Up 10:25:18 - 10:55:18 1054
Klamath Falls 10:40:23 -17.6 AT Down 33.4 215.0 Up 10:25:23 - 10:55:23 1049
Tulelake 10:40:21 -17.7 AT Down 33.5 215.4 Up 10:25:21 - 10:55:21 1033
Cedarville 10:40:17 -17.4 AT Down 33.2 217.0 Up 10:25:17 - 10:55:17 1011
Fall River/Burney 10:40:19 -18.4 Dark Down 34.2 215.9 Up 10:25:19 - 10:55:19 972
Niwot 10:39:31 -10.4 CT Up 26.4 231.8 Low 10:24:31 - 10:54:31 961
Susanville 10:40:16 -18.5 Dark Down 34.4 216.9 Up 10:25:16 - 10:55:16 933
Gimple 10:40:16 -18.8 Dark Down 34.7 216.8 Up 10:25:16 - 10:55:16 912
Greenville 10:40:16 -18.9 Dark Down 34.7 216.7 Up 10:25:16 - 10:55:16 912
Quincy 10:40:16 -19.0 Dark Down 34.9 216.8 Up 10:25:16 - 10:55:16 898
Portola 10:40:14 -18.9 Dark Down 34.8 217.3 Up 10:25:14 - 10:55:14 892
Reno 10:40:11 -18.8 Dark Down 34.7 218.1 Up 10:25:11 - 10:55:11 877
Carson City 10:40:10 -19.1 Dark Down 34.9 218.3 Up 10:25:10 - 10:55:10 852
Yerington 10:40:08 -18.9 Dark Down 34.8 219.0 Up 10:25:08 - 10:55:08 841
Gardnerville 10:40:10 -19.2 Dark Down 35.1 218.5 Up 10:25:10 - 10:55:10 835
Hawthorne 10:40:06 -19.0 Dark Down 34.9 219.8 Up 10:25:06 - 10:55:06 811
Tonopah 10:40:00 -18.6 Dark Up 34.5 221.4 Up 10:25:00 - 10:55:00 784
Lee Vining 10:40:06 -19.6 Dark Down 35.6 219.5 Up 10:25:06 - 10:55:06 768
Bishop 10:40:02 -19.7 Dark Down 35.7 220.6 Up 10:25:02 - 10:55:02 728
Beatty 10:39:56 -19.2 Dark Up 35.2 222.4 Up 10:24:56 - 10:54:56 701
Indian Springs 10:39:52 -18.8 Dark Up 34.8 223.7 Up 10:24:52 - 10:54:52 682
Lone Pine 10:39:59 -20.1 Dark Down 36.1 221.2 Up 10:24:59 - 10:54:59 673
Henderson 10:39:48 -18.8 Dark Up 34.8 224.6 Up 10:24:48 - 10:54:48 644
Searchlight/Boulder City 10:39:47 -19.2 Dark Up 35.2 224.9 Up 10:24:47 - 10:54:47 602
Patrick 10:39:44 -18.6 Dark Up 34.6 226.0 Up 10:24:44 - 10:54:44 602
Kingman/Dolan Springs 10:39:44 -18.9 Dark Up 34.9 225.9 Up 10:24:44 - 10:54:44 584
DCO 10:39:41 -18.4 Dark Up 34.4 226.8 Up 10:24:41 - 10:54:41 581
Laughlin/Bullhead City 10:39:45 -19.2 Dark Up 35.2 225.4 Up 10:24:45 - 10:54:45 580
CPSLO 10:40:06 -22.5 Dark Down 38.4 219.2 Up 10:25:06 - 10:55:06 561
Mohave Valley 10:39:45 -19.4 Dark Up 35.4 225.6 Up 10:24:45 - 10:54:45 559
Lake Havasu City 10:39:43 -19.5 Dark Up 35.5 226.0 Up 10:24:43 - 10:54:43 529
Parker 10:39:42 -19.7 Dark Up 35.8 226.2 Up 10:24:42 - 10:54:42 502
Wildwood 10:39:56 -22.2 Dark Down 38.2 221.9 Up 10:24:56 - 10:54:56 479
Idyllwild 10:39:49 -21.4 Dark Up 37.5 224.0 Up 10:24:49 - 10:54:49 461
Blythe 10:39:42 -20.3 Dark Up 36.3 226.2 Up 10:24:42 - 10:54:42 460
Calipatria 10:39:44 -21.2 Dark Up 37.2 225.5 Up 10:24:44 - 10:54:44 417
Yuma 10:39:40 -21.0 Dark Up 37.0 226.6 Up 10:24:40 - 10:54:40 387

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 14GA54, (2017/05/22 10:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9 18.70 124
13Zet Oph      16:37:09.6 -10:34:01  2.6  2.73 125
PPM 199862     16:38:47.7 -08:37:07  6.4  0.76 125
PPM 199873     16:39:35.2 -07:30:45  8.0  0.43 125
PPM 199845     16:38:05.4 -07:38:08  9.7  0.26 125
14GA54         16:38:34.3 -07:51:39 16.1       125
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:06:50 UT

Marc W. Buie, Southwest Research Institute

RECON