RECON: TNO occultation with 01KO77

Event between 01KO77 and star UC4-375-101579 with event index number of 194691

Geocentric closest approach at 2019/06/28 06:08:23 UTC

J2000 position of star is 17:49:34.2 -15:05:44
Equinox of date position of star is 17:50:35.8 -15:05:59
Stellar brightness R=15.1, use SENSEUP=128
Star is 132 degrees from the moon. Moon is 23% 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 24.1 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 259 seconds.
The 1-sigma cross-track error in the shadow position is 2413 km.
The sky-plane scale is 26505.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 7.7 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 01KO77, (2019/06/28 06:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 21.85 148
35Eta Oph      17:11:29.8 -15:44:52  2.6  9.47 141
PPM 233599     17:48:43.5 -14:43:54  5.9  0.60 132
PPM 233690     17:53:11.2 -15:01:47  8.2  0.61 131
PPM 233642     17:51:17.3 -15:12:03  9.2  0.18 131
01KO77         17:50:41.2 -15:06:01 15.1       131
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 3.5 sigma about the mid-time.
The median site spacing is 13.3 km RECON observability=0.9 and success probability=3.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:09:31 -13.6 AT Down 23.9 160.5 Low 05:54:31 - 06:24:31 5911
Tonasket 06:09:31 -13.8 AT Down 24.1 160.5 Low 05:54:31 - 06:24:31 5899
Okanogan 06:09:31 -14.1 AT Down 24.4 160.3 Low 05:54:31 - 06:24:31 5880
Brewster 06:09:31 -14.3 AT Down 24.6 160.0 Low 05:54:31 - 06:24:31 5864
Manson/Chelan 06:09:31 -14.3 AT Down 24.7 159.6 Low 05:54:31 - 06:24:31 5850
Entiat 06:09:31 -14.5 AT Down 24.9 159.5 Low 05:54:31 - 06:24:31 5838
Wenatchee 06:09:31 -14.7 AT Down 25.2 159.4 Low 05:54:31 - 06:24:31 5823
Ellensburg 06:09:31 -15.0 AT Down 25.5 159.1 Low 05:54:31 - 06:24:31 5799
Yakima 06:09:31 -15.4 AT Down 25.9 159.0 Low 05:54:31 - 06:24:31 5777
Pasco 06:09:31 -16.1 AT Down 26.5 160.4 Low 05:54:31 - 06:24:31 5771
Toppenish/White Swan 06:09:31 -15.6 AT Down 26.1 159.1 Low 05:54:31 - 06:24:31 5766
PNWRO 06:09:31 -16.4 AT Down 26.8 160.6 Low 05:54:31 - 06:24:31 5760
George/Umatilla 06:09:31 -16.4 AT Down 26.8 160.2 Low 05:54:31 - 06:24:31 5751
Goldendale 06:09:40 -16.0 AT Down 26.5 158.6 Low 05:54:40 - 06:24:40 5728
The Dalles 06:09:41 -16.1 AT Down 26.6 158.2 Low 05:54:41 - 06:24:41 5711
Maupin 06:09:41 -16.5 AT Down 27.1 158.2 Low 05:54:41 - 06:24:41 5688
Madras/Culver 06:09:42 -16.9 AT Down 27.6 158.1 Low 05:54:42 - 06:24:42 5656
Redmond 06:09:42 -17.2 AT Down 27.9 158.0 Low 05:54:42 - 06:24:42 5634
Sisters 06:09:43 -17.1 AT Down 27.7 157.6 Low 05:54:43 - 06:24:43 5631
Bend 06:09:43 -17.4 AT Down 28.0 157.8 Low 05:54:43 - 06:24:43 5619
Oregon Observatory 06:09:44 -17.5 AT Down 28.2 157.6 Low 05:54:44 - 06:24:44 5607
La Pine/Gilchrist 06:09:44 -17.6 AT Down 28.3 157.5 Low 05:54:44 - 06:24:44 5594
North Lake 06:09:42 -18.2 Dark Down 28.9 158.1 Low 05:54:42 - 06:24:42 5575
Paisley 06:09:42 -18.8 Dark Down 29.5 158.3 Low 05:54:42 - 06:24:42 5546
Niwot 06:08:52 -25.3 Dark Down 34.7 175.0 Up 05:53:52 - 06:23:52 5529
Chiloquin 06:09:46 -18.5 Dark Down 29.3 156.9 Low 05:54:46 - 06:24:46 5522
Lakeview 06:09:41 -19.4 Dark Down 30.0 158.4 Up 05:54:41 - 06:24:41 5516
Klamath Falls 06:09:46 -18.8 Dark Down 29.6 156.9 Low 05:54:46 - 06:24:46 5502
Tulelake 06:09:45 -19.2 Dark Down 29.9 157.2 Low 05:54:45 - 06:24:45 5488
Cedarville 06:09:41 -20.0 Dark Down 30.7 158.5 Up 05:54:41 - 06:24:41 5477
Fall River/Burney 06:09:46 -20.0 Dark Down 30.8 157.1 Up 05:54:46 - 06:24:46 5431
Susanville 06:09:44 -20.8 Dark Down 31.6 157.7 Up 05:54:44 - 06:24:44 5400
Gimple 06:09:45 -21.0 Dark Down 31.8 157.4 Up 05:54:45 - 06:24:45 5379
Greenville 06:09:45 -20.9 Dark Down 31.8 157.3 Up 05:54:45 - 06:24:45 5378
Quincy 06:09:45 -21.1 Dark Down 31.9 157.3 Up 05:54:45 - 06:24:45 5364
Portola 06:09:44 -21.4 Dark Down 32.2 157.8 Up 05:54:44 - 06:24:44 5362
Reno 06:09:42 -21.9 Dark Down 32.6 158.4 Up 05:54:42 - 06:24:42 5352
Carson City 06:09:42 -22.2 Dark Down 33.0 158.3 Up 05:54:42 - 06:24:42 5329
Yerington 06:09:41 -22.6 Dark Down 33.3 159.0 Up 05:54:41 - 06:24:41 5323
Gardnerville 06:09:42 -22.4 Dark Down 33.2 158.3 Up 05:54:42 - 06:24:42 5313
Hawthorne 06:09:31 -23.2 Dark Down 33.9 159.4 Up 05:54:31 - 06:24:31 5302
Tonopah 06:09:31 -24.1 Dark Down 34.7 160.9 Up 05:54:31 - 06:24:31 5284
Lee Vining 06:09:41 -23.5 Dark Down 34.3 158.8 Up 05:54:41 - 06:24:41 5254
Bishop 06:09:31 -24.3 Dark Down 35.1 159.4 Up 05:54:31 - 06:24:31 5225
Beatty 06:09:31 -25.3 Dark Down 35.9 161.2 Up 05:54:31 - 06:24:31 5208
Indian Springs 06:09:30 -26.0 Dark Down 36.5 162.3 Up 05:54:30 - 06:24:30 5197
Lone Pine 06:09:31 -25.1 Dark Down 35.9 159.6 Up 05:54:31 - 06:24:31 5175
Henderson 06:09:28 -26.7 Dark Down 37.2 163.0 Up 05:54:28 - 06:24:28 5167
Patrick 06:09:24 -27.6 Dark Down 38.0 164.2 Up 05:54:24 - 06:24:24 5135
Searchlight/Boulder City 06:09:28 -27.2 Dark Down 37.8 163.0 Up 05:54:28 - 06:24:28 5127
DCO 06:09:22 -28.1 Dark Down 38.5 165.0 Up 05:54:22 - 06:24:22 5120
Kingman/Dolan Springs 06:09:25 -27.8 Dark Down 38.2 163.9 Up 05:54:25 - 06:24:25 5117
Laughlin/Bullhead City 06:09:26 -27.6 Dark Down 38.1 163.3 Up 05:54:26 - 06:24:26 5109
Mohave Valley 06:09:27 -27.9 Dark Down 38.4 163.2 Up 05:54:27 - 06:24:27 5090
Lake Havasu City 06:09:26 -28.3 Dark Down 38.8 163.4 Up 05:54:26 - 06:24:26 5063
CPSLO 06:09:48 -25.3 Dark Down 36.3 156.4 Up 05:54:48 - 06:24:48 5046
Parker 06:09:26 -28.6 Dark Down 39.2 163.4 Up 05:54:26 - 06:24:26 5038
Blythe 06:09:27 -29.0 Dark Down 39.6 162.9 Up 05:54:27 - 06:24:27 4996
Wildwood 06:09:42 -27.2 Dark Down 38.1 158.3 Up 05:54:42 - 06:24:42 4983
Idyllwild 06:09:31 -28.2 Dark Down 38.9 160.4 Up 05:54:31 - 06:24:31 4981
Calipatria 06:09:31 -29.1 Dark Down 39.8 161.7 Up 05:54:31 - 06:24:31 4948
Yuma 06:09:28 -29.9 Dark Down 40.5 162.6 Up 05:54:28 - 06:24:28 4926

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, (2019/06/28 06:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.85 148
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.47 141
PPM 233599     17:47:36.7 -14:43:33  5.9  0.60 132
PPM 233690     17:52:04.2 -15:01:34  8.2  0.61 131
PPM 233642     17:50:10.3 -15:11:47  9.2  0.18 131
01KO77         17:49:34.2 -15:05:44 15.1       132
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:05:12 UT

Marc W. Buie, Southwest Research Institute

RECON