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 10:06:11 UTC

J2000 position of star is 17:49:44.2 -15:05:53
Equinox of date position of star is 17:50:45.8 -15:06:09
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 16.1 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 10:04:40 -12.6 AT Up 17.4 219.1 Really Low 09:49:40 - 10:19:40 10886
Tonasket 10:04:39 -12.8 AT Up 17.6 219.1 Really Low 09:49:39 - 10:19:39 10874
Okanogan 10:04:39 -13.1 AT Up 17.9 219.1 Really Low 09:49:39 - 10:19:39 10859
Brewster 10:04:38 -13.4 AT Up 18.2 218.9 Really Low 09:49:38 - 10:19:38 10846
Manson/Chelan 10:04:39 -13.7 AT Up 18.6 218.6 Really Low 09:49:39 - 10:19:39 10839
Entiat 10:04:39 -13.9 AT Up 18.8 218.6 Really Low 09:49:39 - 10:19:39 10828
Wenatchee 10:04:38 -14.2 AT Up 19.0 218.6 Really Low 09:49:38 - 10:19:38 10815
Ellensburg 10:04:38 -14.6 AT Up 19.4 218.5 Really Low 09:49:38 - 10:19:38 10795
Yakima 10:04:37 -15.0 AT Up 19.7 218.5 Really Low 09:49:37 - 10:19:37 10774
Toppenish/White Swan 10:04:36 -15.1 AT Up 19.8 218.7 Really Low 09:49:36 - 10:19:36 10761
Pasco 10:04:33 -14.8 AT Up 19.4 219.9 Really Low 09:49:33 - 10:19:33 10744
Goldendale 10:04:36 -15.8 AT Up 20.5 218.5 Low 09:49:36 - 10:19:36 10734
PNWRO 10:04:32 -15.0 AT Up 19.5 220.2 Really Low 09:49:32 - 10:19:32 10728
George/Umatilla 10:04:32 -15.2 AT Up 19.7 219.8 Really Low 09:49:32 - 10:19:32 10727
The Dalles 10:04:36 -16.1 AT Up 20.8 218.2 Low 09:49:36 - 10:19:36 10725
Maupin 10:04:35 -16.4 AT Up 21.1 218.4 Low 09:49:35 - 10:19:35 10701
Madras/Culver 10:04:35 -16.9 AT Up 21.5 218.5 Low 09:49:35 - 10:19:35 10670
Sisters 10:04:35 -17.4 AT Up 22.0 218.1 Low 09:49:35 - 10:19:35 10655
Redmond 10:04:34 -17.3 AT Up 21.8 218.5 Low 09:49:34 - 10:19:34 10650
Bend 10:04:34 -17.5 AT Up 22.1 218.4 Low 09:49:34 - 10:19:34 10639
Oregon Observatory 10:04:34 -17.7 AT Up 22.3 218.4 Low 09:49:34 - 10:19:34 10630
La Pine/Gilchrist 10:04:33 -17.9 AT Up 22.4 218.4 Low 09:49:33 - 10:19:33 10619
North Lake 10:04:31 -18.1 Dark Up 22.5 219.0 Low 09:49:31 - 10:19:31 10588
Chiloquin 10:04:32 -19.0 Dark Up 23.5 218.3 Low 09:49:32 - 10:19:32 10556
Paisley 10:04:29 -18.4 Dark Up 22.8 219.5 Low 09:49:29 - 10:19:29 10552
Klamath Falls 10:04:32 -19.3 Dark Up 23.7 218.5 Low 09:49:32 - 10:19:32 10534
Lakeview 10:04:28 -18.8 Dark Up 23.1 219.8 Low 09:49:28 - 10:19:28 10520
Tulelake 10:04:30 -19.4 Dark Up 23.8 218.8 Low 09:49:30 - 10:19:30 10516
Cedarville 10:04:25 -19.3 Dark Up 23.5 220.1 Low 09:49:25 - 10:19:25 10478
Fall River/Burney 10:04:28 -20.2 Dark Up 24.5 219.2 Low 09:49:28 - 10:19:28 10459
Susanville 10:04:25 -20.5 Dark Up 24.6 220.0 Low 09:49:25 - 10:19:25 10413
Greenville 10:04:25 -20.8 Dark Up 24.9 219.8 Low 09:49:25 - 10:19:25 10398
Gimple 10:04:25 -20.8 Dark Up 24.9 219.9 Low 09:49:25 - 10:19:25 10397
Quincy 10:04:25 -21.0 Dark Up 25.1 219.9 Low 09:49:25 - 10:19:25 10385
Portola 10:04:23 -20.9 Dark Up 25.0 220.4 Low 09:49:23 - 10:19:23 10372
Reno 10:04:21 -20.9 Dark Up 24.8 221.0 Low 09:49:21 - 10:19:21 10349
Carson City 10:04:20 -21.2 Dark Up 25.1 221.1 Low 09:49:20 - 10:19:20 10326
Gardnerville 10:04:18 -21.4 Dark Up 25.3 221.3 Low 09:49:18 - 10:19:18 10309
Yerington 10:04:18 -21.1 Dark Up 24.9 221.8 Low 09:49:18 - 10:19:18 10307
Hawthorne 10:04:15 -21.3 Dark Up 25.0 222.4 Low 09:49:15 - 10:19:15 10271
Lee Vining 10:04:15 -22.0 Dark Up 25.7 222.1 Low 09:49:15 - 10:19:15 10238
Tonopah 10:04:11 -21.2 Dark Up 24.6 223.8 Low 09:49:11 - 10:19:11 10226
Niwot 10:03:45 -13.9 AT Up 16.3 233.0 Really Low 09:48:45 - 10:18:45 10217
Bishop 10:04:12 -22.2 Dark Up 25.7 222.9 Low 09:49:12 - 10:19:12 10190
Beatty 10:04:07 -21.9 Dark Up 25.2 224.5 Low 09:49:07 - 10:19:07 10142
Lone Pine 10:04:10 -22.7 Dark Up 26.1 223.5 Low 09:49:10 - 10:19:10 10134
Indian Springs 10:04:04 -21.7 Dark Up 24.8 225.5 Low 09:49:04 - 10:19:04 10107
CPSLO 10:04:15 -24.9 Dark Up 28.5 221.6 Low 09:49:15 - 10:19:15 10068
Henderson 10:04:00 -21.9 Dark Up 24.8 226.3 Low 09:49:00 - 10:19:00 10062
Searchlight/Boulder City 10:03:59 -22.3 Dark Up 25.2 226.5 Low 09:48:59 - 10:18:59 10020
Patrick 10:03:56 -21.9 Dark Up 24.6 227.4 Low 09:48:56 - 10:18:56 10004
Laughlin/Bullhead City 10:03:58 -22.4 Dark Up 25.2 226.9 Low 09:48:58 - 10:18:58 9995
Kingman/Dolan Springs 10:03:56 -22.1 Dark Up 24.8 227.4 Low 09:48:56 - 10:18:56 9990
Mohave Valley 10:03:57 -22.6 Dark Up 25.3 227.0 Low 09:48:57 - 10:18:57 9975
DCO 10:03:53 -21.8 Dark Up 24.3 228.1 Low 09:48:53 - 10:18:53 9973
Wildwood 10:04:06 -25.1 Dark Up 28.2 223.9 Low 09:49:06 - 10:19:06 9961
Lake Havasu City 10:03:56 -22.8 Dark Up 25.5 227.4 Low 09:48:56 - 10:18:56 9943
Parker 10:03:55 -23.1 Dark Up 25.7 227.5 Low 09:48:55 - 10:18:55 9917
Idyllwild 10:04:01 -24.6 Dark Up 27.4 225.6 Low 09:49:01 - 10:19:01 9914
Blythe 10:03:55 -23.7 Dark Up 26.2 227.5 Low 09:48:55 - 10:18:55 9881
Calipatria 10:03:57 -24.5 Dark Up 27.1 226.9 Low 09:48:57 - 10:18:57 9855
Yuma 10:03:53 -24.4 Dark Up 26.9 227.8 Low 09:48:53 - 10:18:53 9812

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     17:47:36.7 -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 2017/12/06 19:04:51 UT

Marc W. Buie, Southwest Research Institute

RECON