RECON: TNO occultation with 17OF69

Event between 17OF69 and star GA0840:19116591 with event index number of 347975

Geocentric closest approach at 2019/06/22 06:47:27 UTC

J2000 position of star is 20:17:58.2 -05:24:06
Equinox of date position of star is 20:19:00.0 -05:20:25
Stellar brightness G=17.4, use SENSEUP=128
Star is 27 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 43.6 AU from the Sun and 42.8 AU from the Earth.
The TNO is moving 20.1 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 116 seconds.
The 1-sigma cross-track error in the shadow position is 1631 km.
The sky-plane scale is 31054.4 km/arcsec.

The TNO has an absolute magnitude Hv=4.4
Diameter=787.1 km assuming a 5% albedo -- 39.2 sec chord
Diameter=321.3 km assuming a 30% albedo -- 16.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 17OF69, (2019/06/22 06:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.4 -29:31:07  1.2 44.74  19
Tarazed        19:47:11.1 +10:39:43  2.7 17.85  42
PPM 203645     20:07:13.7 -04:01:18  6.2  3.22  30
PPM 203827     20:16:25.5 -05:28:35  7.4  0.66  27
PPM 203860     20:18:16.3 -05:29:40  9.2  0.24  27
17OF69         20:19:00.1 -05:20:25 17.4        27
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 19.0 km RECON observability=0.9 and success probability=16.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:50:00 -15.1 AT Down 19.3 124.7 Really Low 06:39:48 - 07:00:12 -793
Summerland 06:50:02 -15.3 AT Down 19.3 124.4 Really Low 06:39:50 - 07:00:14 -814
Penticton 06:50:02 -15.4 AT Down 19.4 124.5 Really Low 06:39:50 - 07:00:14 -818
Okanagan Falls 06:50:02 -15.6 AT Down 19.5 124.4 Really Low 06:39:50 - 07:00:14 -830
Oliver 06:50:03 -15.7 AT Down 19.6 124.4 Really Low 06:39:51 - 07:00:15 -841
Anarchist Mountain Observatory 06:50:03 -15.9 AT Down 19.8 124.5 Really Low 06:39:51 - 07:00:15 -851
Oroville 06:50:03 -16.0 AT Down 19.8 124.4 Really Low 06:39:51 - 07:00:15 -856
Tonasket 06:50:04 -16.2 AT Down 19.9 124.3 Really Low 06:39:52 - 07:00:16 -872
Okanogan 06:50:06 -16.5 AT Down 20.0 124.1 Low 06:39:54 - 07:00:18 -895
Brewster 06:50:07 -16.7 AT Down 20.1 123.9 Low 06:39:55 - 07:00:19 -914
Manson/Chelan 06:50:09 -16.8 AT Down 20.0 123.5 Really Low 06:39:57 - 07:00:21 -929
Entiat 06:50:09 -17.0 AT Down 20.1 123.4 Low 06:39:57 - 07:00:21 -945
Wenatchee 06:50:11 -17.3 AT Down 20.2 123.2 Low 06:39:59 - 07:00:23 -962
Ellensburg 06:50:12 -17.6 AT Down 20.3 122.9 Low 06:40:00 - 07:00:24 -992
Yakima 06:50:14 -18.0 Dark Down 20.5 122.7 Low 06:40:02 - 07:00:26 -1020
Toppenish/White Swan 06:50:14 -18.2 Dark Down 20.7 122.8 Low 06:40:02 - 07:00:26 -1034
Pasco 06:50:12 -18.6 Dark Down 21.5 123.9 Low 06:40:00 - 07:00:24 -1037
PNWRO 06:50:12 -18.9 Dark Down 21.8 124.0 Low 06:40:00 - 07:00:24 -1054
George/Umatilla 06:50:13 -18.9 Dark Down 21.5 123.6 Low 06:40:01 - 07:00:25 -1062
Goldendale 06:50:17 -18.7 Dark Down 20.7 122.3 Low 06:40:05 - 07:00:29 -1075
The Dalles 06:50:18 -18.8 Dark Down 20.6 121.9 Low 06:40:06 - 07:00:30 -1093
Maupin 06:50:20 -19.2 Dark Down 20.9 121.9 Low 06:40:08 - 07:00:32 -1122
Madras/Culver 06:50:22 -19.8 Dark Down 21.2 121.7 Low 06:40:10 - 07:00:34 -1162
Redmond 06:50:23 -20.1 Dark Down 21.4 121.5 Low 06:40:11 - 07:00:35 -1188
Sisters 06:50:24 -20.0 Dark Down 21.1 121.2 Low 06:40:12 - 07:00:36 -1188
Bend 06:50:24 -20.3 Dark Down 21.4 121.3 Low 06:40:12 - 07:00:36 -1204
Oregon Observatory 06:50:25 -20.4 Dark Down 21.4 121.1 Low 06:40:13 - 07:00:37 -1217
La Pine/Gilchrist 06:50:25 -20.6 Dark Down 21.5 121.0 Low 06:40:13 - 07:00:37 -1233
North Lake 06:50:25 -21.1 Dark Down 22.1 121.4 Low 06:40:13 - 07:00:37 -1262
Paisley 06:50:26 -21.7 Dark Down 22.6 121.5 Low 06:40:14 - 07:00:38 -1302
Chiloquin 06:50:30 -21.5 Dark Down 21.8 120.4 Low 06:40:18 - 07:00:42 -1318
Lakeview 06:50:27 -22.3 Dark Down 23.0 121.5 Low 06:40:15 - 07:00:39 -1339
Klamath Falls 06:50:31 -21.9 Dark Down 22.1 120.3 Low 06:40:19 - 07:00:43 -1343
Tulelake 06:50:31 -22.2 Dark Down 22.4 120.5 Low 06:40:19 - 07:00:43 -1362
Cedarville 06:50:29 -22.9 Dark Down 23.4 121.4 Low 06:40:17 - 07:00:41 -1389
Fall River/Burney 06:50:33 -23.1 Dark Down 22.9 120.2 Low 06:40:21 - 07:00:45 -1432
Niwot 06:49:48 -26.4 Dark Up 33.2 134.2 Up 06:39:36 - 07:00:00 -1443
SwRI 06:49:49 -26.5 Dark Up 33.2 134.1 Up 06:39:37 - 07:00:01 -1451
Susanville 06:50:33 -23.9 Dark Down 23.7 120.6 Low 06:40:21 - 07:00:45 -1477
Gimple 06:50:35 -24.1 Dark Down 23.7 120.3 Low 06:40:23 - 07:00:47 -1500
Greenville 06:50:35 -24.1 Dark Down 23.7 120.3 Low 06:40:23 - 07:00:47 -1501
Quincy 06:50:35 -24.3 Dark Down 23.8 120.2 Low 06:40:23 - 07:00:47 -1517
Portola 06:50:34 -24.5 Dark Down 24.1 120.5 Low 06:40:22 - 07:00:46 -1524
Reno 06:50:34 -24.9 Dark Down 24.7 120.9 Low 06:40:22 - 07:00:46 -1542
Carson City 06:50:34 -25.2 Dark Down 24.9 120.8 Low 06:40:22 - 07:00:46 -1571
Yerington 06:50:33 -25.6 Dark Up 25.4 121.3 Low 06:40:21 - 07:00:45 -1583
Gardnerville 06:50:35 -25.5 Dark Up 25.1 120.8 Low 06:40:23 - 07:00:47 -1590
Hawthorne 06:50:33 -26.1 Dark Up 26.0 121.5 Low 06:40:21 - 07:00:45 -1618
Tonopah 06:50:31 -26.9 Dark Up 27.2 122.5 Low 06:40:19 - 07:00:43 -1650
Lee Vining 06:50:36 -26.6 Dark Up 26.0 120.9 Low 06:40:24 - 07:00:48 -1666
Bishop 06:50:36 -27.3 Dark Up 26.8 121.2 Low 06:40:24 - 07:00:48 -1712
Beatty 06:50:32 -28.1 Dark Up 28.1 122.3 Low 06:40:20 - 07:00:44 -1743
Indian Springs 06:50:30 -28.6 Dark Up 29.0 123.1 Low 06:40:18 - 07:00:42 -1765
Lone Pine 06:50:37 -28.1 Dark Up 27.4 121.2 Low 06:40:25 - 07:00:49 -1773
Henderson 06:50:29 -29.3 Dark Up 29.8 123.4 Low 06:40:17 - 07:00:41 -1807
Searchlight/Boulder City 06:50:30 -29.9 Dark Up 30.2 123.2 Up 06:40:18 - 07:00:42 -1855
Patrick 06:50:27 -30.1 Dark Up 30.9 124.1 Up 06:40:15 - 07:00:39 -1855
Kingman/Dolan Springs 06:50:28 -30.3 Dark Up 30.9 123.8 Up 06:40:16 - 07:00:40 -1874
DCO 06:50:26 -30.5 Dark Up 31.5 124.5 Up 06:40:14 - 07:00:38 -1878
Laughlin/Bullhead City 06:50:30 -30.2 Dark Up 30.6 123.3 Up 06:40:18 - 07:00:42 -1878
CPSLO 06:50:47 -28.7 Dark Up 26.3 118.6 Low 06:40:35 - 07:00:59 -1895
Mohave Valley 06:50:31 -30.5 Dark Up 30.7 123.2 Up 06:40:19 - 07:00:43 -1901
Lake Havasu City 06:50:31 -30.9 Dark Up 31.1 123.2 Up 06:40:19 - 07:00:43 -1935
Parker 06:50:31 -31.3 Dark Up 31.3 123.1 Up 06:40:19 - 07:00:43 -1965
Wildwood 06:50:45 -30.4 Dark Up 28.3 119.6 Low 06:40:33 - 07:00:57 -1989
Idyllwild 06:50:40 -31.2 Dark Up 29.9 120.9 Low 06:40:28 - 07:00:52 -2011
Blythe 06:50:34 -31.7 Dark Up 31.4 122.6 Up 06:40:22 - 07:00:46 -2011
Calipatria 06:50:38 -32.0 Dark Up 31.0 121.6 Up 06:40:26 - 07:00:50 -2058
Yuma 06:50:36 -32.6 Dark Up 31.9 122.1 Up 06:40:24 - 07:00:48 -2092

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 17OF69, (2019/06/22 06:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 44.74  19
Tarazed        19:46:15.6 +10:36:48  2.7 17.85  42
PPM 203645     20:06:12.3 -04:04:43  6.2  3.22  30
PPM 203827     20:15:23.5 -05:32:13  7.4  0.66  27
PPM 203860     20:17:14.3 -05:33:21  9.2  0.24  27
17OF69         20:17:58.2 -05:24:06 17.4        27
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:18:40 UT

Marc W. Buie, Southwest Research Institute

RECON