RECON: TNO occultation with 01KO77

Event between 01KO77 and star UC4-375-101728 with event index number of 194688

Geocentric closest approach at 2019/06/26 10:06:10 UTC

J2000 position of star is 17:49:44.2 -15:05:53
Equinox of date position of star is 17:50:44.3 -15:06:08
Stellar brightness R=15.0, use SENSEUP=128
Star is 109 degrees from the moon. Moon is 40% 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 24.2 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 2431 km.
The sky-plane scale is 26502.7 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, (2019/06/26 10:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 21.88 125
35Eta Oph      17:11:29.8 -15:44:52  2.6  9.51 118
PPM 233599     17:48:43.5 -14:43:54  5.9  0.63 109
PPM 233690     17:53:11.1 -15:01:47  8.2  0.57 108
PPM 233642     17:51:17.3 -15:12:03  9.2  0.14 109
01KO77         17:50:51.1 -15:06:10 15.0       109
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 16.3 km RECON observability=0.8 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 10:04:38 -12.6 AT Up 17.4 219.1 Really Low 09:49:38 - 10:19:38 10889
Tonasket 10:04:38 -12.8 AT Up 17.6 219.1 Really Low 09:49:38 - 10:19:38 10878
Okanogan 10:04:37 -13.1 AT Up 17.9 219.1 Really Low 09:49:37 - 10:19:37 10862
Brewster 10:04:37 -13.4 AT Up 18.2 218.9 Really Low 09:49:37 - 10:19:37 10850
Manson/Chelan 10:04:37 -13.7 AT Up 18.6 218.6 Really Low 09:49:37 - 10:19:37 10842
Entiat 10:04:37 -14.0 AT Up 18.8 218.6 Really Low 09:49:37 - 10:19:37 10831
Wenatchee 10:04:37 -14.2 AT Up 19.0 218.6 Really Low 09:49:37 - 10:19:37 10819
Ellensburg 10:04:36 -14.6 AT Up 19.4 218.5 Really Low 09:49:36 - 10:19:36 10799
Yakima 10:04:36 -15.0 AT Up 19.7 218.5 Really Low 09:49:36 - 10:19:36 10777
Toppenish/White Swan 10:04:36 -15.1 AT Up 19.8 218.7 Really Low 09:49:36 - 10:19:36 10764
Pasco 10:04:31 -14.8 AT Up 19.4 219.9 Really Low 09:49:31 - 10:19:31 10747
Goldendale 10:04:35 -15.8 AT Up 20.5 218.5 Low 09:49:35 - 10:19:35 10738
PNWRO 10:04:30 -15.0 AT Up 19.5 220.2 Really Low 09:49:30 - 10:19:30 10732
George/Umatilla 10:04:31 -15.2 AT Up 19.7 219.8 Really Low 09:49:31 - 10:19:31 10731
The Dalles 10:04:35 -16.1 AT Up 20.8 218.2 Low 09:49:35 - 10:19:35 10728
Maupin 10:04:34 -16.4 AT Up 21.1 218.4 Low 09:49:34 - 10:19:34 10704
Madras/Culver 10:04:33 -16.9 AT Up 21.5 218.5 Low 09:49:33 - 10:19:33 10674
Sisters 10:04:33 -17.4 AT Up 22.0 218.1 Low 09:49:33 - 10:19:33 10659
Redmond 10:04:32 -17.3 AT Up 21.8 218.5 Low 09:49:32 - 10:19:32 10654
Bend 10:04:32 -17.5 AT Up 22.1 218.4 Low 09:49:32 - 10:19:32 10643
Oregon Observatory 10:04:32 -17.7 AT Up 22.3 218.4 Low 09:49:32 - 10:19:32 10634
La Pine/Gilchrist 10:04:32 -17.9 AT Up 22.4 218.4 Low 09:49:32 - 10:19:32 10623
North Lake 10:04:29 -18.1 Dark Up 22.5 219.0 Low 09:49:29 - 10:19:29 10593
Chiloquin 10:04:31 -19.0 Dark Up 23.5 218.3 Low 09:49:31 - 10:19:31 10560
Paisley 10:04:27 -18.4 Dark Up 22.8 219.5 Low 09:49:27 - 10:19:27 10557
Klamath Falls 10:04:30 -19.3 Dark Up 23.7 218.5 Low 09:49:30 - 10:19:30 10539
Lakeview 10:04:25 -18.8 Dark Up 23.1 219.8 Low 09:49:25 - 10:19:25 10524
Tulelake 10:04:28 -19.4 Dark Up 23.8 218.8 Low 09:49:28 - 10:19:28 10520
Cedarville 10:04:24 -19.3 Dark Up 23.5 220.1 Low 09:49:24 - 10:19:24 10483
Fall River/Burney 10:04:26 -20.2 Dark Up 24.5 219.1 Low 09:49:26 - 10:19:26 10463
Susanville 10:04:23 -20.5 Dark Up 24.6 220.0 Low 09:49:23 - 10:19:23 10417
Greenville 10:04:24 -20.8 Dark Up 25.0 219.8 Low 09:49:24 - 10:19:24 10402
Gimple 10:04:23 -20.8 Dark Up 24.9 219.9 Low 09:49:23 - 10:19:23 10401
Quincy 10:04:23 -21.0 Dark Up 25.1 219.9 Low 09:49:23 - 10:19:23 10388
Portola 10:04:22 -20.9 Dark Up 25.0 220.3 Low 09:49:22 - 10:19:22 10377
Reno 10:04:20 -20.9 Dark Up 24.8 221.0 Low 09:49:20 - 10:19:20 10353
Carson City 10:04:19 -21.2 Dark Up 25.1 221.1 Low 09:49:19 - 10:19:19 10330
Gardnerville 10:04:18 -21.4 Dark Up 25.3 221.3 Low 09:49:18 - 10:19:18 10313
Yerington 10:04:16 -21.1 Dark Up 24.9 221.8 Low 09:49:16 - 10:19:16 10311
Hawthorne 10:04:14 -21.3 Dark Up 25.0 222.4 Low 09:49:14 - 10:19:14 10275
Lee Vining 10:04:15 -22.0 Dark Up 25.7 222.1 Low 09:49:15 - 10:19:15 10242
Tonopah 10:04:09 -21.2 Dark Up 24.6 223.8 Low 09:49:09 - 10:19:09 10230
Niwot 10:03:44 -13.9 AT Up 16.3 233.0 Really Low 09:48:44 - 10:18:44 10220
Bishop 10:04:11 -22.2 Dark Up 25.7 222.9 Low 09:49:11 - 10:19:11 10194
Beatty 10:04:06 -21.9 Dark Up 25.2 224.5 Low 09:49:06 - 10:19:06 10145
Lone Pine 10:04:09 -22.7 Dark Up 26.1 223.5 Low 09:49:09 - 10:19:09 10138
Indian Springs 10:04:02 -21.7 Dark Up 24.8 225.5 Low 09:49:02 - 10:19:02 10110
CPSLO 10:04:14 -24.9 Dark Up 28.5 221.6 Low 09:49:14 - 10:19:14 10071
Henderson 10:03:59 -21.9 Dark Up 24.8 226.3 Low 09:48:59 - 10:18:59 10064
Searchlight/Boulder City 10:03:58 -22.3 Dark Up 25.2 226.5 Low 09:48:58 - 10:18:58 10023
Patrick 10:03:55 -21.9 Dark Up 24.6 227.4 Low 09:48:55 - 10:18:55 10007
Laughlin/Bullhead City 10:03:56 -22.4 Dark Up 25.2 226.9 Low 09:48:56 - 10:18:56 9997
Kingman/Dolan Springs 10:03:55 -22.1 Dark Up 24.8 227.4 Low 09:48:55 - 10:18:55 9993
Mohave Valley 10:03:56 -22.6 Dark Up 25.3 227.0 Low 09:48:56 - 10:18:56 9977
DCO 10:03:52 -21.8 Dark Up 24.4 228.1 Low 09:48:52 - 10:18:52 9976
Wildwood 10:04:06 -25.1 Dark Up 28.2 223.9 Low 09:49:06 - 10:19:06 9963
Lake Havasu City 10:03:54 -22.8 Dark Up 25.5 227.4 Low 09:48:54 - 10:18:54 9945
Parker 10:03:53 -23.1 Dark Up 25.7 227.5 Low 09:48:53 - 10:18:53 9919
Idyllwild 10:04:00 -24.6 Dark Up 27.4 225.6 Low 09:49:00 - 10:19:00 9918
Blythe 10:03:53 -23.7 Dark Up 26.2 227.5 Low 09:48:53 - 10:18:53 9883
Calipatria 10:03:55 -24.5 Dark Up 27.1 226.9 Low 09:48:55 - 10:18:55 9857
Yuma 10:03:51 -24.4 Dark Up 26.9 227.8 Low 09:48:51 - 10:18:51 9814

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, (2019/06/26 10:06UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.88 125
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.51 118
PPM 233599     17:47:36.8 -14:43:33  5.9  0.63 109
PPM 233690     17:52:04.2 -15:01:34  8.2  0.57 108
PPM 233642     17:50:10.3 -15:11:47  9.2  0.14 109
01KO77         17:49:44.2 -15:05:53 15.0       109
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:48:53 UT

Marc W. Buie, Southwest Research Institute

RECON