RECON: TNO occultation with 01KO77

Event between 01KO77 and star GA0740:13159081 with event index number of 189494

Geocentric closest approach at 2019/05/15 09:40:13 UTC

J2000 position of star is 17:53:20.2 -15:12:51
Equinox of date position of star is 17:54:23.6 -15:13:01
Stellar brightness G=16.3, use SENSEUP=128
Star is 79 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 37.5 AU from the Sun and 36.7 AU from the Earth.
The TNO is moving 19.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 413 seconds.
The 1-sigma cross-track error in the shadow position is 2299 km.
The sky-plane scale is 26623.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 9.4 sec chord
Diameter=75.3 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 01KO77, (2019/05/15 09:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:35.9 -26:28:24  0.9 22.54  62
35Eta Oph      17:11:29.4 -15:44:51  2.6 10.36  69
PPM 233766     17:57:25.9 -15:48:52  6.1  0.93  80
PPM 233690     17:53:10.8 -15:01:47  8.2  0.36  79
PPM 233721     17:55:12.8 -14:54:38  8.8  0.36  79
01KO77         17:54:26.8 -15:13:02 16.3        79
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 2.2 sigma about the mid-time.
The median site spacing is 13.5 km RECON observability=1.0 and success probability=5.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 09:36:28 -18.0 AT Up 24.5 168.4 Low 09:21:28 - 09:51:28 4381
Oroville 09:36:28 -18.5 Dark Up 25.1 168.5 Low 09:21:28 - 09:51:28 4353
Tonasket 09:36:28 -18.7 Dark Up 25.4 168.4 Low 09:21:28 - 09:51:28 4341
Okanogan 09:36:28 -19.1 Dark Up 25.7 168.2 Low 09:21:28 - 09:51:28 4321
Brewster 09:36:29 -19.4 Dark Up 25.9 168.0 Low 09:21:29 - 09:51:29 4303
Manson/Chelan 09:36:30 -19.6 Dark Up 26.1 167.6 Low 09:21:30 - 09:51:30 4284
Entiat 09:36:31 -19.9 Dark Up 26.3 167.5 Low 09:21:31 - 09:51:31 4271
Wenatchee 09:36:31 -20.1 Dark Up 26.5 167.4 Low 09:21:31 - 09:51:31 4256
Ellensburg 09:36:32 -20.6 Dark Up 26.9 167.1 Low 09:21:32 - 09:51:32 4229
Pasco 09:36:27 -20.8 Dark Up 27.8 168.5 Low 09:21:27 - 09:51:27 4216
PNWRO 09:36:26 -21.0 Dark Up 28.1 168.7 Low 09:21:26 - 09:51:26 4207
Yakima 09:36:32 -20.9 Dark Up 27.3 167.0 Low 09:21:32 - 09:51:32 4206
Toppenish/White Swan 09:36:31 -21.1 Dark Up 27.5 167.2 Low 09:21:31 - 09:51:31 4197
George/Umatilla 09:36:28 -21.2 Dark Up 28.1 168.3 Low 09:21:28 - 09:51:28 4193
Goldendale 09:36:34 -21.7 Dark Up 28.0 166.7 Low 09:21:34 - 09:51:34 4158
The Dalles 09:36:34 -22.0 Dark Up 28.1 166.2 Low 09:21:34 - 09:51:34 4137
Niwot 09:35:30 -20.5 Dark Up 34.6 183.8 Up 09:20:30 - 09:50:30 4122
Maupin 09:36:35 -22.4 Dark Up 28.6 166.3 Low 09:21:35 - 09:51:35 4115
Madras/Culver 09:36:35 -22.9 Dark Up 29.1 166.2 Low 09:21:35 - 09:51:35 4083
Redmond 09:36:35 -23.2 Dark Up 29.4 166.1 Low 09:21:35 - 09:51:35 4060
Sisters 09:36:36 -23.3 Dark Up 29.3 165.7 Low 09:21:36 - 09:51:36 4053
Bend 09:36:36 -23.5 Dark Up 29.6 165.9 Low 09:21:36 - 09:51:36 4045
Oregon Observatory 09:36:36 -23.6 Dark Up 29.8 165.7 Low 09:21:36 - 09:51:36 4031
La Pine/Gilchrist 09:36:37 -23.9 Dark Up 29.9 165.7 Low 09:21:37 - 09:51:37 4018
North Lake 09:36:34 -24.1 Dark Up 30.5 166.2 Up 09:21:34 - 09:51:34 4004
Paisley 09:36:33 -24.5 Dark Up 31.1 166.6 Up 09:21:33 - 09:51:33 3979
Lakeview 09:36:32 -24.9 Dark Up 31.6 166.7 Up 09:21:32 - 09:51:32 3951
Chiloquin 09:36:38 -25.0 Dark Up 31.0 165.1 Up 09:21:38 - 09:51:38 3942
Klamath Falls 09:36:38 -25.3 Dark Up 31.3 165.1 Up 09:21:38 - 09:51:38 3922
Cedarville 09:36:31 -25.4 Dark Up 32.3 166.8 Up 09:21:31 - 09:51:31 3914
Tulelake 09:36:37 -25.4 Dark Up 31.6 165.4 Up 09:21:37 - 09:51:37 3912
Fall River/Burney 09:36:36 -26.2 Dark Up 32.5 165.4 Up 09:21:36 - 09:51:36 3856
Susanville 09:36:34 -26.5 Dark Up 33.3 166.1 Up 09:21:34 - 09:51:34 3832
Gimple 09:36:35 -26.9 Dark Up 33.5 165.8 Up 09:21:35 - 09:51:35 3809
Greenville 09:36:35 -26.9 Dark Up 33.5 165.7 Up 09:21:35 - 09:51:35 3807
Portola 09:36:32 -27.0 Dark Up 33.9 166.2 Up 09:21:32 - 09:51:32 3797
Quincy 09:36:34 -27.1 Dark Up 33.7 165.7 Up 09:21:34 - 09:51:34 3794
Reno 09:36:30 -27.0 Dark Up 34.3 166.9 Up 09:21:30 - 09:51:30 3794
Yerington 09:36:28 -27.3 Dark Up 34.9 167.6 Up 09:21:28 - 09:51:28 3772
Carson City 09:36:30 -27.4 Dark Up 34.6 166.9 Up 09:21:30 - 09:51:30 3771
Gardnerville 09:36:29 -27.6 Dark Up 34.9 166.9 Up 09:21:29 - 09:51:29 3755
Tonopah 09:36:18 -27.4 Dark Up 36.1 169.7 Up 09:21:18 - 09:51:18 3753
Hawthorne 09:36:25 -27.5 Dark Up 35.4 168.1 Up 09:21:25 - 09:51:25 3753
Lee Vining 09:36:27 -28.2 Dark Up 35.9 167.4 Up 09:21:27 - 09:51:27 3704
Indian Springs 09:36:11 -28.1 Dark Up 37.8 171.3 Up 09:21:11 - 09:51:11 3686
Beatty 09:36:17 -28.2 Dark Up 37.3 170.0 Up 09:21:17 - 09:51:17 3684
Bishop 09:36:24 -28.5 Dark Up 36.6 168.2 Up 09:21:24 - 09:51:24 3679
Henderson 09:36:09 -28.2 Dark Up 38.4 172.1 Up 09:21:09 - 09:51:09 3664
Patrick 09:36:03 -28.3 Dark Up 39.1 173.3 Up 09:21:03 - 09:51:03 3644
DCO 09:36:00 -28.2 Dark Up 39.5 174.2 Up 09:21:00 - 09:51:00 3638
Lone Pine 09:36:23 -29.0 Dark Up 37.4 168.5 Up 09:21:23 - 09:51:23 3634
Searchlight/Boulder City 09:36:09 -28.7 Dark Up 39.0 172.1 Up 09:21:09 - 09:51:09 3625
Kingman/Dolan Springs 09:36:04 -28.5 Dark Up 39.3 173.1 Up 09:21:04 - 09:51:04 3625
Laughlin/Bullhead City 09:36:07 -28.8 Dark Up 39.3 172.5 Up 09:21:07 - 09:51:07 3612
Mohave Valley 09:36:06 -29.0 Dark Up 39.6 172.4 Up 09:21:06 - 09:51:06 3592
Lake Havasu City 09:36:05 -29.2 Dark Up 40.0 172.7 Up 09:21:05 - 09:51:05 3569
Parker 09:36:05 -29.5 Dark Up 40.3 172.7 Up 09:21:05 - 09:51:05 3545
Blythe 09:36:07 -30.1 Dark Up 40.8 172.3 Up 09:21:07 - 09:51:07 3500
CPSLO 09:36:32 -31.1 Dark Up 38.2 165.2 Up 09:21:32 - 09:51:32 3481
Idyllwild 09:36:16 -30.9 Dark Up 40.4 169.6 Up 09:21:16 - 09:51:16 3460
Calipatria 09:36:10 -30.9 Dark Up 41.2 171.0 Up 09:21:10 - 09:51:10 3443
Wildwood 09:36:25 -31.4 Dark Up 39.8 167.4 Up 09:21:25 - 09:51:25 3442
Yuma 09:36:06 -30.9 Dark Up 41.7 172.1 Up 09:21:06 - 09:51:06 3431

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, (2019/05/15 09:40UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.54  62
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.36  69
PPM 233766     17:56:19.0 -15:48:46  6.1  0.93  80
PPM 233690     17:52:04.2 -15:01:34  8.2  0.36  79
PPM 233721     17:54:06.4 -14:54:28  8.8  0.36  79
01KO77         17:53:20.2 -15:12:51 16.3        79
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:11:34 UT

Marc W. Buie, Southwest Research Institute

RECON