RECON: TNO occultation with 01KO77

Event between 01KO77 and star GA0740:12486311 with event index number of 194678

Geocentric closest approach at 2019/06/16 09:50:02 UTC

J2000 position of star is 17:50:38.9 -15:06:59
Equinox of date position of star is 17:51:45.7 -15:07:14
Stellar brightness G=16.1, use SENSEUP=128
Star is 15 degrees from the moon. Moon is 99% illuminated.
TNO apparent brightness V=23.3

[RECON map]
TNO is 37.5 AU from the Sun and 36.5 AU from the Earth.
The TNO is moving 24.4 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 396 seconds.
The 1-sigma cross-track error in the shadow position is 3548 km.
The sky-plane scale is 26498.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 7.6 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 01KO77, (2019/06/16 09:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.2 -26:28:25  0.9 22.06   8
35Eta Oph      17:11:29.7 -15:44:52  2.6  9.72   6
PPM 233599     17:48:43.4 -14:43:54  5.9  0.83  14
PPM 233690     17:53:11.1 -15:01:47  8.2  0.35  15
PPM 233642     17:51:17.2 -15:12:03  9.2  0.14  15
01KO77         17:51:45.8 -15:07:14 16.1        15
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 2.3 sigma about the mid-time.
The median site spacing is 13.3 km RECON observability=0.8 and success probability=5.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:49:15 -12.7 AT Up 21.5 205.6 Low 09:34:15 - 10:04:15 4905
Summerland 09:49:15 -13.1 AT Up 21.8 205.4 Low 09:34:15 - 10:04:15 4892
Penticton 09:49:14 -13.1 AT Up 21.8 205.5 Low 09:34:14 - 10:04:14 4889
Okanagan Falls 09:49:14 -13.3 AT Up 22.0 205.5 Low 09:34:14 - 10:04:14 4880
Oliver 09:49:14 -13.4 AT Up 22.1 205.6 Low 09:34:14 - 10:04:14 4872
Anarchist Mountain Observatory 09:49:13 -13.5 AT Up 22.3 205.8 Low 09:34:13 - 10:04:13 4864
Oroville 09:49:13 -13.6 AT Up 22.3 205.7 Low 09:34:13 - 10:04:13 4861
Tonasket 09:49:13 -13.8 AT Up 22.5 205.8 Low 09:34:13 - 10:04:13 4850
Okanogan 09:49:12 -14.2 AT Up 22.9 205.7 Low 09:34:12 - 10:04:12 4834
Brewster 09:49:13 -14.5 AT Up 23.2 205.5 Low 09:34:13 - 10:04:13 4821
Manson/Chelan 09:49:13 -14.8 AT Up 23.5 205.2 Low 09:34:13 - 10:04:13 4811
Entiat 09:49:13 -15.0 AT Up 23.7 205.2 Low 09:34:13 - 10:04:13 4800
Wenatchee 09:49:13 -15.2 AT Up 24.0 205.1 Low 09:34:13 - 10:04:13 4788
Ellensburg 09:49:13 -15.7 AT Up 24.4 205.0 Low 09:34:13 - 10:04:13 4768
Yakima 09:49:13 -16.0 AT Up 24.8 205.0 Low 09:34:13 - 10:04:13 4747
Toppenish/White Swan 09:49:12 -16.2 AT Up 24.9 205.3 Low 09:34:12 - 10:04:12 4736
Pasco 09:49:08 -15.9 AT Up 24.7 206.5 Low 09:34:08 - 10:04:08 4727
PNWRO 09:49:07 -16.1 AT Up 24.8 206.8 Low 09:34:07 - 10:04:07 4714
George/Umatilla 09:49:08 -16.3 AT Up 25.0 206.4 Low 09:34:08 - 10:04:08 4710
Goldendale 09:49:12 -16.8 AT Up 25.6 204.9 Low 09:34:12 - 10:04:12 4707
The Dalles 09:49:13 -17.1 AT Up 25.9 204.6 Low 09:34:13 - 10:04:13 4696
Maupin 09:49:12 -17.5 AT Up 26.2 204.8 Low 09:34:12 - 10:04:12 4674
Madras/Culver 09:49:11 -18.0 AT Up 26.7 204.9 Low 09:34:11 - 10:04:11 4644
Sisters 09:49:12 -18.4 Dark Up 27.2 204.5 Low 09:34:12 - 10:04:12 4626
Redmond 09:49:11 -18.3 Dark Up 27.1 204.9 Low 09:34:11 - 10:04:11 4624
Bend 09:49:11 -18.6 Dark Up 27.3 204.8 Low 09:34:11 - 10:04:11 4613
Oregon Observatory 09:49:11 -18.8 Dark Up 27.5 204.7 Low 09:34:11 - 10:04:11 4603
La Pine/Gilchrist 09:49:11 -19.0 Dark Up 27.7 204.7 Low 09:34:11 - 10:04:11 4592
North Lake 09:49:08 -19.2 Dark Up 27.9 205.4 Low 09:34:08 - 10:04:08 4567
Paisley 09:49:07 -19.6 Dark Up 28.3 205.9 Low 09:34:07 - 10:04:07 4535
Chiloquin 09:49:11 -20.1 Dark Up 28.8 204.5 Low 09:34:11 - 10:04:11 4529
Klamath Falls 09:49:10 -20.4 Dark Up 29.1 204.7 Low 09:34:10 - 10:04:10 4509
Lakeview 09:49:06 -20.0 Dark Up 28.7 206.2 Low 09:34:06 - 10:04:06 4505
Tulelake 09:49:09 -20.5 Dark Up 29.3 205.1 Low 09:34:09 - 10:04:09 4493
Cedarville 09:49:04 -20.5 Dark Up 29.2 206.5 Low 09:34:04 - 10:04:04 4466
Fall River/Burney 09:49:07 -21.3 Dark Up 30.1 205.4 Up 09:34:07 - 10:04:07 4438
Susanville 09:49:04 -21.7 Dark Up 30.4 206.3 Up 09:34:04 - 10:04:04 4399
Greenville 09:49:04 -22.0 Dark Up 30.7 206.1 Up 09:34:04 - 10:04:04 4383
Gimple 09:49:04 -22.0 Dark Up 30.7 206.2 Up 09:34:04 - 10:04:04 4382
Quincy 09:49:04 -22.2 Dark Up 30.9 206.1 Up 09:34:04 - 10:04:04 4370
Portola 09:49:02 -22.1 Dark Up 30.9 206.7 Up 09:34:02 - 10:04:02 4362
Reno 09:49:00 -22.2 Dark Up 30.9 207.4 Up 09:34:00 - 10:04:00 4344
Carson City 09:49:00 -22.5 Dark Up 31.2 207.5 Up 09:34:00 - 10:04:00 4321
Niwot 09:48:17 -15.6 AT Up 24.1 221.3 Low 09:33:17 - 10:03:17 4313
Yerington 09:48:57 -22.4 Dark Up 31.1 208.2 Up 09:33:57 - 10:03:57 4308
SwRI 09:48:18 -15.7 AT Up 24.3 221.3 Low 09:33:18 - 10:03:18 4307
Gardnerville 09:48:59 -22.7 Dark Up 31.4 207.6 Up 09:33:59 - 10:03:59 4306
Hawthorne 09:48:55 -22.6 Dark Up 31.4 208.9 Up 09:33:55 - 10:03:55 4277
Tonopah 09:48:55 -22.5 Dark Up 31.2 210.5 Up 09:33:55 - 10:03:55 4245
Lee Vining 09:48:56 -23.3 Dark Up 32.0 208.6 Up 09:33:56 - 10:03:56 4241
Bishop 09:48:55 -23.6 Dark Up 32.3 209.5 Up 09:33:55 - 10:03:55 4201
Beatty 09:48:55 -23.3 Dark Up 32.0 211.3 Up 09:33:55 - 10:03:55 4171
Lone Pine 09:48:55 -24.1 Dark Up 32.8 210.1 Up 09:33:55 - 10:03:55 4151
Indian Springs 09:48:43 -23.2 Dark Up 31.9 212.5 Up 09:33:43 - 10:03:43 4140
Henderson 09:48:40 -23.3 Dark Up 32.0 213.4 Up 09:33:40 - 10:03:40 4101
CPSLO 09:48:57 -26.2 Dark Up 35.0 207.8 Up 09:33:57 - 10:03:57 4065
Searchlight/Boulder City 09:48:39 -23.8 Dark Up 32.5 213.6 Up 09:33:39 - 10:03:39 4062
Patrick 09:48:35 -23.4 Dark Up 32.0 214.7 Up 09:33:35 - 10:03:35 4054
Laughlin/Bullhead City 09:48:37 -23.9 Dark Up 32.5 214.1 Up 09:33:37 - 10:03:37 4039
Kingman/Dolan Springs 09:48:35 -23.7 Dark Up 32.3 214.6 Up 09:33:35 - 10:03:35 4039
DCO 09:48:32 -23.3 Dark Up 31.9 215.5 Up 09:33:32 - 10:03:32 4029
Mohave Valley 09:48:37 -24.1 Dark Up 32.8 214.2 Up 09:33:37 - 10:03:37 4020
Lake Havasu City 09:48:35 -24.4 Dark Up 33.0 214.6 Up 09:33:35 - 10:03:35 3991
Wildwood 09:48:55 -26.5 Dark Up 35.2 210.4 Up 09:33:55 - 10:03:55 3979
Parker 09:48:34 -24.7 Dark Up 33.3 214.7 Up 09:33:34 - 10:03:34 3966
Idyllwild 09:48:42 -26.1 Dark Up 34.7 212.4 Up 09:33:42 - 10:03:42 3946
Blythe 09:48:35 -25.2 Dark Up 33.8 214.6 Up 09:33:35 - 10:03:35 3930
Calipatria 09:48:37 -26.1 Dark Up 34.7 213.9 Up 09:33:37 - 10:03:37 3898
Yuma 09:48:34 -26.0 Dark Up 34.6 215.0 Up 09:33:34 - 10:03:34 3863

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 01KO77, (2019/06/16 09:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.06   8
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.72   6
PPM 233599     17:47:36.7 -14:43:33  5.9  0.83  14
PPM 233690     17:52:04.2 -15:01:34  8.2  0.35  15
PPM 233642     17:50:10.3 -15:11:47  9.2  0.14  15
01KO77         17:50:38.9 -15:06:59 16.1        15
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:16:24 UT

Marc W. Buie, Southwest Research Institute

RECON