RECON: TNO occultation with 523717

Event between (523717) 14KY101 and star UC4-355-082759 with event index number of 307158

Geocentric closest approach at 2019/06/17 07:55:47 UTC

J2000 position of star is 16:56:37.4 -19:01:48
Equinox of date position of star is 16:57:43.6 -19:03:30
Stellar brightness R=16.4, use SENSEUP=128
Star is 11 degrees from the moon. Moon is 100% illuminated.
TNO apparent brightness V=21.8

[RECON map]
TNO is 35.1 AU from the Sun and 34.1 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 91 seconds.
The 1-sigma cross-track error in the shadow position is 1360 km.
The sky-plane scale is 24709.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=316.2 km assuming a 5% albedo -- 13.4 sec chord
Diameter=129.1 km assuming a 30% albedo -- 5.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 523717, (2019/06/17 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.2 -26:28:25  0.9  9.70  17
35Eta Oph      17:11:29.7 -15:44:52  2.6  4.66   9
PPM 232367     16:58:12.6 -19:34:10  6.1  0.52  10
PPM 232321     16:56:14.8 -18:54:51  8.1  0.39  11
523717         16:57:45.9 -19:03:34 16.4        10
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 11.4 km RECON observability=1.0 and success probability=15.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 07:55:31 -16.7 AT Up 20.4 190.7 Low 07:47:24 - 08:03:38 1774
Summerland 07:55:32 -16.8 AT Up 20.5 190.4 Low 07:47:25 - 08:03:39 1773
Penticton 07:55:31 -17.1 AT Up 20.8 190.6 Low 07:47:24 - 08:03:38 1760
Okanagan Falls 07:55:31 -17.3 AT Up 21.0 190.6 Low 07:47:24 - 08:03:38 1752
Oliver 07:55:31 -17.4 AT Up 21.2 190.6 Low 07:47:24 - 08:03:38 1746
Anarchist Mountain Observatory 07:55:30 -17.6 AT Up 21.3 190.8 Low 07:47:23 - 08:03:37 1739
Oroville 07:55:30 -17.7 AT Up 21.4 190.7 Low 07:47:23 - 08:03:37 1735
Tonasket 07:55:30 -17.9 AT Up 21.6 190.8 Low 07:47:23 - 08:03:37 1726
Okanogan 07:55:30 -18.3 Dark Up 22.0 190.6 Low 07:47:23 - 08:03:37 1712
Brewster 07:55:31 -18.5 Dark Up 22.3 190.4 Low 07:47:24 - 08:03:38 1700
Manson/Chelan 07:55:32 -18.7 Dark Up 22.5 190.1 Low 07:47:25 - 08:03:39 1691
Entiat 07:55:32 -19.0 Dark Up 22.7 190.0 Low 07:47:25 - 08:03:39 1682
Wenatchee 07:55:32 -19.2 Dark Up 23.0 190.0 Low 07:47:25 - 08:03:39 1671
Ellensburg 07:55:32 -19.6 Dark Up 23.4 189.8 Low 07:47:25 - 08:03:39 1652
Yakima 07:55:32 -20.0 Dark Up 23.8 189.8 Low 07:47:25 - 08:03:39 1634
Toppenish/White Swan 07:55:31 -20.2 Dark Up 24.0 190.0 Low 07:47:24 - 08:03:38 1624
Pasco 07:55:27 -20.4 Dark Up 24.0 191.3 Low 07:47:20 - 08:03:34 1619
PNWRO 07:55:26 -20.6 Dark Up 24.2 191.5 Low 07:47:19 - 08:03:33 1607
George/Umatilla 07:55:28 -20.7 Dark Up 24.3 191.1 Low 07:47:21 - 08:03:35 1603
Goldendale 07:55:32 -20.8 Dark Up 24.6 189.6 Low 07:47:25 - 08:03:39 1598
The Dalles 07:55:33 -21.0 Dark Up 24.9 189.2 Low 07:47:26 - 08:03:40 1588
Maupin 07:55:32 -21.4 Dark Up 25.3 189.3 Low 07:47:25 - 08:03:39 1568
Madras/Culver 07:55:32 -22.0 Dark Up 25.8 189.3 Low 07:47:25 - 08:03:39 1541
Sisters 07:55:34 -22.3 Dark Up 26.2 188.9 Low 07:47:27 - 08:03:41 1525
Redmond 07:55:32 -22.3 Dark Up 26.2 189.3 Low 07:47:25 - 08:03:39 1524
Bend 07:55:33 -22.5 Dark Up 26.4 189.2 Low 07:47:26 - 08:03:40 1513
Oregon Observatory 07:55:33 -22.7 Dark Up 26.6 189.1 Low 07:47:26 - 08:03:40 1504
La Pine/Gilchrist 07:55:33 -22.9 Dark Up 26.8 189.0 Low 07:47:26 - 08:03:40 1494
North Lake 07:55:31 -23.4 Dark Up 27.2 189.7 Low 07:47:24 - 08:03:38 1472
Paisley 07:55:29 -23.9 Dark Up 27.7 190.1 Low 07:47:22 - 08:03:36 1444
Chiloquin 07:55:34 -24.0 Dark Up 27.9 188.7 Low 07:47:27 - 08:03:41 1436
Klamath Falls 07:55:33 -24.3 Dark Up 28.3 188.8 Low 07:47:26 - 08:03:40 1418
Lakeview 07:55:28 -24.4 Dark Up 28.1 190.4 Low 07:47:21 - 08:03:35 1417
Tulelake 07:55:32 -24.6 Dark Up 28.5 189.2 Low 07:47:25 - 08:03:39 1404
Cedarville 07:55:27 -25.1 Dark Up 28.8 190.6 Low 07:47:20 - 08:03:34 1382
Fall River/Burney 07:55:31 -25.5 Dark Up 29.4 189.4 Low 07:47:24 - 08:03:38 1355
Susanville 07:55:28 -26.2 Dark Up 29.9 190.2 Low 07:47:21 - 08:03:35 1321
Greenville 07:55:29 -26.5 Dark Up 30.2 189.9 Up 07:47:22 - 08:03:36 1305
Gimple 07:55:29 -26.5 Dark Up 30.2 190.0 Up 07:47:22 - 08:03:36 1305
Quincy 07:55:29 -26.7 Dark Up 30.4 189.9 Up 07:47:22 - 08:03:36 1294
Portola 07:55:27 -26.8 Dark Up 30.5 190.5 Up 07:47:20 - 08:03:34 1287
Reno 07:55:25 -27.1 Dark Up 30.7 191.2 Up 07:47:18 - 08:03:32 1272
Niwot 07:54:35 -25.3 Dark Up 26.6 206.1 Low 07:46:28 - 08:02:42 1255
Carson City 07:55:24 -27.4 Dark Up 31.0 191.3 Up 07:47:17 - 08:03:31 1251
Yerington 07:55:22 -27.6 Dark Up 31.1 192.0 Up 07:47:15 - 08:03:29 1240
Gardnerville 07:55:24 -27.7 Dark Up 31.2 191.3 Up 07:47:17 - 08:03:31 1237
Hawthorne 07:55:20 -28.1 Dark Up 31.5 192.6 Up 07:47:13 - 08:03:27 1212
Tonopah 07:55:14 -28.6 Dark Up 31.7 194.2 Up 07:47:07 - 08:03:21 1183
Lee Vining 07:55:21 -28.7 Dark Up 32.1 192.1 Up 07:47:14 - 08:03:28 1179
Bishop 07:55:18 -29.3 Dark Up 32.6 193.0 Up 07:47:11 - 08:03:25 1142
Beatty 07:55:12 -29.7 Dark Up 32.7 194.8 Up 07:47:05 - 08:03:19 1113
Lone Pine 07:55:17 -30.0 Dark Up 33.2 193.5 Up 07:47:10 - 08:03:24 1095
Indian Springs 07:55:08 -30.0 Dark Up 32.8 196.1 Up 07:47:01 - 08:03:15 1090
Henderson 07:55:05 -30.5 Dark Up 33.1 196.9 Up 07:46:58 - 08:03:12 1056
Searchlight/Boulder City 07:55:04 -31.1 Dark Up 33.7 197.1 Up 07:46:57 - 08:03:11 1019
CPSLO 07:55:25 -31.3 Dark Up 34.9 190.8 Up 07:47:18 - 08:03:32 1014
Patrick 07:55:00 -31.0 Dark Up 33.5 198.2 Up 07:46:53 - 08:03:07 1013
Kingman/Dolan Springs 07:55:01 -31.3 Dark Up 33.7 198.1 Up 07:46:54 - 08:03:08 999
Laughlin/Bullhead City 07:55:03 -31.3 Dark Up 33.9 197.5 Up 07:46:56 - 08:03:10 999
DCO 07:54:57 -31.3 Dark Up 33.6 199.1 Up 07:46:50 - 08:03:04 991
Mohave Valley 07:55:03 -31.6 Dark Up 34.1 197.6 Up 07:46:56 - 08:03:10 981
Lake Havasu City 07:55:01 -32.0 Dark Up 34.5 197.9 Up 07:46:54 - 08:03:08 955
Wildwood 07:55:17 -32.5 Dark Up 35.8 193.3 Up 07:47:10 - 08:03:24 935
Parker 07:55:01 -32.3 Dark Up 34.8 198.0 Up 07:46:54 - 08:03:08 931
Idyllwild 07:55:10 -32.9 Dark Up 35.8 195.4 Up 07:47:03 - 08:03:17 909
Blythe 07:55:01 -32.9 Dark Up 35.4 197.8 Up 07:46:54 - 08:03:08 897
Calipatria 07:55:04 -33.4 Dark Up 36.1 196.9 Up 07:46:57 - 08:03:11 866
Yuma 07:55:01 -33.8 Dark Up 36.3 198.0 Up 07:46:54 - 08:03:08 835

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 523717, (2019/06/17 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.70  17
35Eta Oph      17:10:22.7 -15:43:29  2.6  4.66   9
PPM 232367     16:57:03.9 -19:32:25  6.1  0.52  10
PPM 232321     16:55:06.4 -18:53:03  8.1  0.39  11
523717         16:56:37.4 -19:01:48 16.4        11
Positions are for J2000

Event circumstances last updated at 2018/10/24 21:38:18 UT

Marc W. Buie, Southwest Research Institute

RECON