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 06:08:22 UTC

J2000 position of star is 17:49:34.2 -15:05:44
Equinox of date position of star is 17:50:34.3 -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 13.6 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 5920
Tonasket 06:09:31 -13.8 AT Down 24.1 160.5 Low 05:54:31 - 06:24:31 5908
Okanogan 06:09:31 -14.1 AT Down 24.4 160.3 Low 05:54:31 - 06:24:31 5889
Brewster 06:09:31 -14.3 AT Down 24.6 160.0 Low 05:54:31 - 06:24:31 5872
Manson/Chelan 06:09:31 -14.3 AT Down 24.7 159.6 Low 05:54:31 - 06:24:31 5858
Entiat 06:09:31 -14.5 AT Down 24.9 159.5 Low 05:54:31 - 06:24:31 5845
Wenatchee 06:09:31 -14.7 AT Down 25.2 159.4 Low 05:54:31 - 06:24:31 5831
Ellensburg 06:09:31 -15.0 AT Down 25.5 159.1 Low 05:54:31 - 06:24:31 5807
Yakima 06:09:31 -15.4 AT Down 25.9 159.0 Low 05:54:31 - 06:24:31 5784
Pasco 06:09:31 -16.1 AT Down 26.5 160.4 Low 05:54:31 - 06:24:31 5779
Toppenish/White Swan 06:09:31 -15.6 AT Down 26.1 159.1 Low 05:54:31 - 06:24:31 5774
PNWRO 06:09:31 -16.4 AT Down 26.8 160.6 Low 05:54:31 - 06:24:31 5768
George/Umatilla 06:09:31 -16.4 AT Down 26.8 160.2 Low 05:54:31 - 06:24:31 5758
Goldendale 06:09:31 -16.0 AT Down 26.5 158.6 Low 05:54:31 - 06:24:31 5739
The Dalles 06:09:40 -16.1 AT Down 26.6 158.2 Low 05:54:40 - 06:24:40 5719
Maupin 06:09:40 -16.5 AT Down 27.1 158.2 Low 05:54:40 - 06:24:40 5697
Madras/Culver 06:09:41 -16.9 AT Down 27.6 158.1 Low 05:54:41 - 06:24:41 5665
Redmond 06:09:41 -17.2 AT Down 27.9 158.0 Low 05:54:41 - 06:24:41 5643
Sisters 06:09:42 -17.1 AT Down 27.7 157.6 Low 05:54:42 - 06:24:42 5640
Bend 06:09:41 -17.4 AT Down 28.0 157.8 Low 05:54:41 - 06:24:41 5629
Oregon Observatory 06:09:42 -17.5 AT Down 28.2 157.6 Low 05:54:42 - 06:24:42 5617
La Pine/Gilchrist 06:09:43 -17.6 AT Down 28.3 157.5 Low 05:54:43 - 06:24:43 5604
North Lake 06:09:41 -18.2 Dark Down 28.9 158.0 Low 05:54:41 - 06:24:41 5585
Paisley 06:09:41 -18.8 Dark Down 29.5 158.3 Low 05:54:41 - 06:24:41 5555
Niwot 06:08:51 -25.3 Dark Down 34.7 175.0 Up 05:53:51 - 06:23:51 5538
Chiloquin 06:09:45 -18.5 Dark Down 29.3 156.9 Low 05:54:45 - 06:24:45 5532
Lakeview 06:09:41 -19.4 Dark Down 30.0 158.4 Up 05:54:41 - 06:24:41 5526
Klamath Falls 06:09:45 -18.8 Dark Down 29.6 156.9 Low 05:54:45 - 06:24:45 5511
Tulelake 06:09:45 -19.2 Dark Down 29.9 157.2 Low 05:54:45 - 06:24:45 5498
Cedarville 06:09:41 -20.0 Dark Down 30.7 158.5 Up 05:54:41 - 06:24:41 5487
Fall River/Burney 06:09:45 -20.0 Dark Down 30.8 157.1 Up 05:54:45 - 06:24:45 5441
Susanville 06:09:43 -20.8 Dark Down 31.6 157.7 Up 05:54:43 - 06:24:43 5409
Gimple 06:09:44 -21.0 Dark Down 31.8 157.4 Up 05:54:44 - 06:24:44 5388
Greenville 06:09:44 -20.9 Dark Down 31.8 157.3 Up 05:54:44 - 06:24:44 5387
Quincy 06:09:45 -21.1 Dark Down 31.9 157.3 Up 05:54:45 - 06:24:45 5374
Portola 06:09:43 -21.4 Dark Down 32.2 157.8 Up 05:54:43 - 06:24:43 5372
Reno 06:09:41 -21.9 Dark Down 32.6 158.4 Up 05:54:41 - 06:24:41 5362
Carson City 06:09:41 -22.2 Dark Down 33.0 158.3 Up 05:54:41 - 06:24:41 5338
Yerington 06:09:31 -22.6 Dark Down 33.3 158.9 Up 05:54:31 - 06:24:31 5336
Gardnerville 06:09:41 -22.4 Dark Down 33.2 158.3 Up 05:54:41 - 06:24:41 5323
Hawthorne 06:09:31 -23.2 Dark Down 33.9 159.4 Up 05:54:31 - 06:24:31 5310
Tonopah 06:09:31 -24.1 Dark Down 34.7 160.9 Up 05:54:31 - 06:24:31 5293
Lee Vining 06:09:40 -23.5 Dark Down 34.3 158.8 Up 05:54:40 - 06:24:40 5264
Bishop 06:09:31 -24.3 Dark Down 35.1 159.4 Up 05:54:31 - 06:24:31 5233
Beatty 06:09:31 -25.3 Dark Down 35.9 161.2 Up 05:54:31 - 06:24:31 5217
Indian Springs 06:09:28 -26.0 Dark Down 36.5 162.3 Up 05:54:28 - 06:24:28 5206
Lone Pine 06:09:31 -25.1 Dark Down 35.9 159.6 Up 05:54:31 - 06:24:31 5183
Henderson 06:09:26 -26.7 Dark Down 37.2 163.0 Up 05:54:26 - 06:24:26 5176
Patrick 06:09:22 -27.6 Dark Down 38.0 164.2 Up 05:54:22 - 06:24:22 5144
Searchlight/Boulder City 06:09:26 -27.2 Dark Down 37.8 162.9 Up 05:54:26 - 06:24:26 5136
DCO 06:09:20 -28.1 Dark Down 38.5 164.9 Up 05:54:20 - 06:24:20 5129
Kingman/Dolan Springs 06:09:23 -27.8 Dark Down 38.2 163.9 Up 05:54:23 - 06:24:23 5126
Laughlin/Bullhead City 06:09:25 -27.6 Dark Down 38.1 163.3 Up 05:54:25 - 06:24:25 5118
Mohave Valley 06:09:25 -27.9 Dark Down 38.4 163.2 Up 05:54:25 - 06:24:25 5098
Lake Havasu City 06:09:24 -28.3 Dark Down 38.8 163.4 Up 05:54:24 - 06:24:24 5072
CPSLO 06:09:47 -25.3 Dark Down 36.3 156.4 Up 05:54:47 - 06:24:47 5055
Parker 06:09:24 -28.6 Dark Down 39.2 163.4 Up 05:54:24 - 06:24:24 5046
Blythe 06:09:26 -29.0 Dark Down 39.6 162.9 Up 05:54:26 - 06:24:26 5004
Wildwood 06:09:41 -27.1 Dark Down 38.1 158.3 Up 05:54:41 - 06:24:41 4993
Idyllwild 06:09:31 -28.2 Dark Down 38.9 160.4 Up 05:54:31 - 06:24:31 4990
Calipatria 06:09:30 -29.1 Dark Down 39.8 161.7 Up 05:54:30 - 06:24:30 4957
Yuma 06:09:26 -29.8 Dark Down 40.5 162.6 Up 05:54:26 - 06:24:26 4934

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     17:47:36.8 -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 2017/07/01 17:49:38 UT

Marc W. Buie, Southwest Research Institute

RECON