RECON: TNO occultation with 04KC19

Event between 04KC19 and star GA0680:19419962 with event index number of 259481

Geocentric closest approach at 2019/06/01 10:35:39 UTC

J2000 position of star is 17:50:54.1 -20:48:04
Equinox of date position of star is 17:52:02.6 -20:48:18
Stellar brightness G=16.2, use SENSEUP=128
Star is 138 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 30.4 AU from the Sun and 29.4 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 3.7 arcsec/hr.
The 1-sigma error in the time of the event is 309 seconds.
The 1-sigma cross-track error in the shadow position is 1280 km.
The sky-plane scale is 21310.0 km/arcsec.

The TNO has an absolute magnitude Hv=8.5
Diameter=121.3 km assuming a 5% albedo -- 5.5 sec chord
Diameter=49.5 km assuming a 30% albedo -- 2.3 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04KC19, (2019/06/01 10:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.1 -26:28:24  0.9 19.47 155
35Eta Oph      17:11:29.6 -15:44:51  2.6 10.87 148
PPM 267309     17:48:56.0 -22:29:00  6.1  1.83 139
PPM 267354     17:50:36.8 -20:50:08  8.0  0.34 139
PPM 267404     17:52:22.5 -20:58:06  9.1  0.18 138
04KC19         17:52:03.6 -20:48:18 16.2       138
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 2.9 sigma about the mid-time.
The median site spacing is 13.7 km RECON observability=0.6 and success probability=1.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 10:34:48 -10.0 NT Down 17.0 200.4 Really Low 10:19:48 - 10:49:48 5011
Kelowna 10:34:47 -9.9 NT Down 16.8 200.7 Really Low 10:19:47 - 10:49:47 5011
Penticton 10:34:47 -10.2 NT Down 17.2 200.6 Really Low 10:19:47 - 10:49:47 4998
Okanagan Falls 10:34:47 -10.4 NT Down 17.4 200.6 Really Low 10:19:47 - 10:49:47 4991
Oliver 10:34:46 -10.5 NT Down 17.6 200.6 Really Low 10:19:46 - 10:49:46 4985
Anarchist Mountain Observatory 10:34:45 -10.6 NT Down 17.7 200.8 Really Low 10:19:45 - 10:49:45 4977
Oroville 10:34:46 -10.7 NT Down 17.8 200.7 Really Low 10:19:46 - 10:49:46 4974
Tonasket 10:34:46 -10.8 NT Down 18.0 200.8 Really Low 10:19:46 - 10:49:46 4965
Okanogan 10:34:46 -11.2 NT Down 18.3 200.7 Really Low 10:19:46 - 10:49:46 4953
Brewster 10:34:45 -11.5 NT Down 18.6 200.5 Really Low 10:19:45 - 10:49:45 4943
Manson/Chelan 10:34:46 -11.8 NT Down 18.9 200.2 Really Low 10:19:46 - 10:49:46 4937
Entiat 10:34:46 -12.0 NT Down 19.1 200.1 Really Low 10:19:46 - 10:49:46 4928
Wenatchee 10:34:46 -12.2 AT Down 19.4 200.1 Really Low 10:19:46 - 10:49:46 4918
Ellensburg 10:34:46 -12.6 AT Down 19.8 199.9 Really Low 10:19:46 - 10:49:46 4902
Yakima 10:34:46 -13.0 AT Down 20.2 200.0 Low 10:19:46 - 10:49:46 4885
Toppenish/White Swan 10:34:45 -13.1 AT Down 20.4 200.1 Low 10:19:45 - 10:49:45 4875
Pasco 10:34:41 -12.7 AT Down 20.2 201.4 Low 10:19:41 - 10:49:41 4862
Goldendale 10:34:46 -13.7 AT Down 21.0 199.8 Low 10:19:46 - 10:49:46 4853
PNWRO 10:34:40 -12.8 AT Down 20.4 201.6 Low 10:19:40 - 10:49:40 4850
George/Umatilla 10:34:41 -13.0 AT Down 20.6 201.2 Low 10:19:41 - 10:49:41 4849
The Dalles 10:34:47 -14.0 AT Down 21.3 199.5 Low 10:19:47 - 10:49:47 4844
Maupin 10:34:46 -14.3 AT Down 21.7 199.6 Low 10:19:46 - 10:49:46 4825
Madras/Culver 10:34:45 -14.8 AT Down 22.2 199.7 Low 10:19:45 - 10:49:45 4800
Sisters 10:34:46 -15.2 AT Down 22.6 199.3 Low 10:19:46 - 10:49:46 4787
Redmond 10:34:45 -15.1 AT Down 22.5 199.7 Low 10:19:45 - 10:49:45 4784
Bend 10:34:45 -15.3 AT Down 22.8 199.6 Low 10:19:45 - 10:49:45 4775
Oregon Observatory 10:34:45 -15.5 AT Down 23.0 199.4 Low 10:19:45 - 10:49:45 4767
La Pine/Gilchrist 10:34:46 -15.7 AT Down 23.2 199.4 Low 10:19:46 - 10:49:46 4758
North Lake 10:34:43 -15.8 AT Down 23.4 200.1 Low 10:19:43 - 10:49:43 4734
Chiloquin 10:34:46 -16.8 AT Down 24.3 199.2 Low 10:19:46 - 10:49:46 4705
Paisley 10:34:41 -16.1 AT Down 23.9 200.5 Low 10:19:41 - 10:49:41 4705
Klamath Falls 10:34:45 -17.0 AT Down 24.6 199.4 Low 10:19:45 - 10:49:45 4688
Lakeview 10:34:40 -16.4 AT Down 24.3 200.8 Low 10:19:40 - 10:49:40 4678
Tulelake 10:34:43 -17.1 AT Down 24.8 199.7 Low 10:19:43 - 10:49:43 4672
Cedarville 10:34:38 -16.9 AT Down 24.9 201.0 Low 10:19:38 - 10:49:38 4644
Fall River/Burney 10:34:41 -17.8 AT Down 25.6 199.9 Low 10:19:41 - 10:49:41 4625
Susanville 10:34:38 -18.0 AT Down 26.0 200.7 Low 10:19:38 - 10:49:38 4588
Greenville 10:34:39 -18.3 Dark Down 26.4 200.5 Low 10:19:39 - 10:49:39 4575
Gimple 10:34:39 -18.3 Dark Down 26.4 200.6 Low 10:19:39 - 10:49:39 4574
Quincy 10:34:39 -18.5 Dark Down 26.6 200.5 Low 10:19:39 - 10:49:39 4564
Portola 10:34:37 -18.4 Dark Down 26.6 201.0 Low 10:19:37 - 10:49:37 4554
Reno 10:34:34 -18.3 Dark Down 26.6 201.7 Low 10:19:34 - 10:49:34 4536
Carson City 10:34:34 -18.5 Dark Down 26.9 201.8 Low 10:19:34 - 10:49:34 4516
Gardnerville 10:34:33 -18.7 Dark Down 27.2 201.9 Low 10:19:33 - 10:49:33 4502
Yerington 10:34:31 -18.4 Dark Down 26.9 202.5 Low 10:19:31 - 10:49:31 4501
Hawthorne 10:34:29 -18.5 Dark Down 27.2 203.1 Low 10:19:29 - 10:49:29 4471
Lee Vining 10:34:30 -19.2 Dark Down 27.9 202.7 Low 10:19:30 - 10:49:30 4442
Tonopah 10:34:23 -18.2 Dark Down 27.2 204.5 Low 10:19:23 - 10:49:23 4434
Niwot 10:33:45 -10.2 NT Down 20.8 215.2 Low 10:18:45 - 10:48:45 4426
SwRI 10:33:46 -10.3 NT Down 21.0 215.1 Low 10:18:46 - 10:48:46 4421
Bishop 10:34:27 -19.3 Dark Down 28.2 203.5 Low 10:19:27 - 10:49:27 4403
Beatty 10:34:20 -18.8 Dark Down 28.1 205.2 Low 10:19:20 - 10:49:20 4363
Lone Pine 10:34:24 -19.7 Dark Down 28.8 204.0 Low 10:19:24 - 10:49:24 4355
Indian Springs 10:34:16 -18.5 Dark Down 28.0 206.4 Low 10:19:16 - 10:49:16 4335
Henderson 10:34:12 -18.5 Dark Down 28.3 207.2 Low 10:19:12 - 10:49:12 4296
CPSLO 10:34:32 -22.0 Dark Down 30.8 201.7 Up 10:19:32 - 10:49:32 4293
Searchlight/Boulder City 10:34:11 -18.9 Dark Down 28.8 207.4 Low 10:19:11 - 10:49:11 4260
Patrick 10:34:07 -18.3 Dark Down 28.4 208.4 Low 10:19:07 - 10:49:07 4247
Laughlin/Bullhead City 10:34:09 -18.9 Dark Down 28.9 207.8 Low 10:19:09 - 10:49:09 4239
Kingman/Dolan Springs 10:34:08 -18.6 Dark Down 28.7 208.3 Low 10:19:08 - 10:49:08 4235
Mohave Valley 10:34:09 -19.1 Dark Down 29.1 207.8 Low 10:19:09 - 10:49:09 4221
DCO 10:34:04 -18.2 Dark Down 28.4 209.1 Low 10:19:04 - 10:49:04 4221
Wildwood 10:34:23 -21.9 Dark Down 31.3 204.1 Up 10:19:23 - 10:49:23 4203
Lake Havasu City 10:34:07 -19.3 Dark Down 29.4 208.2 Low 10:19:07 - 10:49:07 4194
Parker 10:34:07 -19.5 Dark Down 29.7 208.3 Low 10:19:07 - 10:49:07 4171
Idyllwild 10:34:16 -21.1 Dark Down 31.0 206.0 Up 10:19:16 - 10:49:16 4166
Blythe 10:34:07 -20.0 Dark Down 30.3 208.2 Up 10:19:07 - 10:49:07 4140
Calipatria 10:34:10 -20.9 Dark Down 31.1 207.4 Up 10:19:10 - 10:49:10 4116
Yuma 10:34:07 -20.7 Dark Down 31.1 208.4 Up 10:19:07 - 10:49:07 4079

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 04KC19, (2019/06/01 10:36UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.47 155
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.87 148
PPM 267309     17:47:45.6 -22:28:40  6.1  1.83 139
PPM 267354     17:49:27.2 -20:49:51  8.0  0.34 139
PPM 267404     17:51:12.9 -20:57:52  9.1  0.18 138
04KC19         17:50:54.1 -20:48:04 16.2       138
Positions are for J2000

Event circumstances last updated at 2019/02/12 08:16:32 UT

Marc W. Buie, Southwest Research Institute

RECON