RECON: TNO occultation with 04KV18

Event between 04KV18 and star UC4-370-102196 with event index number of 195249

Geocentric closest approach at 2019/06/23 07:38:25 UTC

J2000 position of star is 17:43:46.6 -16:07:00
Equinox of date position of star is 17:44:47.1 -16:07:24
Stellar brightness R=16.2, use SENSEUP=128
Star is 73 degrees from the moon. Moon is 70% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 29.8 AU from the Sun and 28.8 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 461 seconds.
The 1-sigma cross-track error in the shadow position is 1624 km.
The sky-plane scale is 20868.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 4.0 sec chord
Diameter=39.0 km assuming a 30% albedo -- 1.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04KV18, (2019/06/23 07:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 20.13  89
35Eta Oph      17:11:29.8 -15:44:52  2.6  8.04  81
PPM 233351     17:38:43.3 -15:34:53  6.2  1.58  75
PPM 233491     17:43:47.4 -15:34:02  7.5  0.62  74
PPM 233503     17:44:26.6 -16:12:25  9.9  0.14  73
04KV18         17:44:53.9 -16:07:27 16.2        73
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 2.0 sigma about the mid-time.
The median site spacing is 14.2 km RECON observability=1.0 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 07:38:38 -17.5 AT Up 24.9 180.5 Low 07:23:38 - 07:53:38 8274
Tonasket 07:38:38 -17.7 AT Up 25.2 180.5 Low 07:23:38 - 07:53:38 8263
Okanogan 07:38:39 -18.0 Dark Up 25.5 180.3 Low 07:23:39 - 07:53:39 8246
Brewster 07:38:39 -18.3 Dark Up 25.8 180.1 Low 07:23:39 - 07:53:39 8232
Manson/Chelan 07:38:41 -18.5 Dark Up 26.0 179.7 Low 07:23:41 - 07:53:41 8221
Entiat 07:38:41 -18.7 Dark Up 26.2 179.7 Low 07:23:41 - 07:53:41 8209
Wenatchee 07:38:41 -18.9 Dark Up 26.5 179.6 Low 07:23:41 - 07:53:41 8196
Ellensburg 07:38:42 -19.3 Dark Up 26.9 179.3 Low 07:23:42 - 07:53:42 8175
Yakima 07:38:42 -19.7 Dark Up 27.3 179.3 Low 07:23:42 - 07:53:42 8154
Toppenish/White Swan 07:38:41 -20.0 Dark Up 27.5 179.5 Low 07:23:41 - 07:53:41 8144
Pasco 07:38:37 -20.2 Dark Up 27.6 180.8 Low 07:23:37 - 07:53:37 8143
PNWRO 07:38:36 -20.4 Dark Up 27.9 181.1 Low 07:23:36 - 07:53:36 8132
George/Umatilla 07:38:38 -20.5 Dark Up 28.0 180.6 Low 07:23:38 - 07:53:38 8125
Goldendale 07:38:42 -20.5 Dark Up 28.1 179.0 Low 07:23:42 - 07:53:42 8113
The Dalles 07:38:43 -20.7 Dark Up 28.3 178.6 Low 07:23:43 - 07:53:43 8100
Maupin 07:38:43 -21.1 Dark Up 28.7 178.7 Low 07:23:43 - 07:53:43 8078
Madras/Culver 07:38:43 -21.6 Dark Up 29.2 178.7 Low 07:23:43 - 07:53:43 8049
Redmond 07:38:43 -22.0 Dark Up 29.6 178.6 Low 07:23:43 - 07:53:43 8029
Sisters 07:38:45 -21.9 Dark Up 29.6 178.2 Low 07:23:45 - 07:53:45 8028
Bend 07:38:43 -22.2 Dark Up 29.8 178.5 Low 07:23:43 - 07:53:43 8017
Oregon Observatory 07:38:44 -22.4 Dark Up 30.0 178.3 Low 07:23:44 - 07:53:44 8007
La Pine/Gilchrist 07:38:44 -22.6 Dark Up 30.2 178.2 Up 07:23:44 - 07:53:44 7995
North Lake 07:38:42 -23.0 Dark Up 30.6 178.9 Up 07:23:42 - 07:53:42 7974
Paisley 07:38:41 -23.6 Dark Up 31.2 179.3 Up 07:23:41 - 07:53:41 7944
Chiloquin 07:38:46 -23.6 Dark Up 31.3 177.8 Up 07:23:46 - 07:53:46 7930
Lakeview 07:38:40 -24.1 Dark Up 31.7 179.5 Up 07:23:40 - 07:53:40 7916
Klamath Falls 07:38:46 -24.0 Dark Up 31.6 177.9 Up 07:23:46 - 07:53:46 7910
Tulelake 07:38:44 -24.3 Dark Up 31.9 178.2 Up 07:23:44 - 07:53:44 7896
Cedarville 07:38:39 -24.8 Dark Up 32.4 179.7 Up 07:23:39 - 07:53:39 7878
Fall River/Burney 07:38:44 -25.2 Dark Up 32.8 178.3 Up 07:23:44 - 07:53:44 7842
Niwot 07:37:48 -25.9 Dark Up 32.2 196.5 Up 07:22:48 - 07:52:48 7822
Susanville 07:38:41 -25.9 Dark Up 33.5 179.2 Up 07:23:41 - 07:53:41 7808
Gimple 07:38:42 -26.1 Dark Up 33.7 178.9 Up 07:23:42 - 07:53:42 7790
Greenville 07:38:42 -26.1 Dark Up 33.7 178.8 Up 07:23:42 - 07:53:42 7789
Quincy 07:38:42 -26.3 Dark Up 33.9 178.8 Up 07:23:42 - 07:53:42 7777
Portola 07:38:41 -26.5 Dark Up 34.1 179.4 Up 07:23:41 - 07:53:41 7772
Reno 07:38:38 -26.8 Dark Up 34.3 180.1 Up 07:23:38 - 07:53:38 7759
Carson City 07:38:38 -27.2 Dark Up 34.7 180.1 Up 07:23:38 - 07:53:38 7736
Yerington 07:38:36 -27.4 Dark Up 34.9 180.9 Up 07:23:36 - 07:53:36 7727
Gardnerville 07:38:38 -27.4 Dark Up 34.9 180.2 Up 07:23:38 - 07:53:38 7721
Hawthorne 07:38:34 -27.9 Dark Up 35.3 181.5 Up 07:23:34 - 07:53:34 7700
Tonopah 07:38:28 -28.4 Dark Up 35.8 183.1 Up 07:23:28 - 07:53:28 7676
Lee Vining 07:38:35 -28.4 Dark Up 35.9 180.9 Up 07:23:35 - 07:53:35 7662
Bishop 07:38:32 -29.1 Dark Up 36.5 181.8 Up 07:23:32 - 07:53:32 7625
Beatty 07:38:26 -29.6 Dark Up 36.9 183.7 Up 07:23:26 - 07:53:26 7601
Indian Springs 07:38:22 -30.0 Dark Up 37.2 185.0 Up 07:23:22 - 07:53:22 7583
Lone Pine 07:38:31 -29.9 Dark Up 37.3 182.2 Up 07:23:31 - 07:53:31 7576
Henderson 07:38:20 -30.5 Dark Up 37.6 185.9 Up 07:23:20 - 07:53:20 7549
Searchlight/Boulder City 07:38:20 -31.1 Dark Up 38.2 186.0 Up 07:23:20 - 07:53:20 7511
Patrick 07:38:16 -31.2 Dark Up 38.2 187.3 Up 07:23:16 - 07:53:16 7510
Kingman/Dolan Springs 07:38:17 -31.4 Dark Up 38.4 187.1 Up 07:23:17 - 07:53:17 7494
DCO 07:38:13 -31.5 Dark Up 38.4 188.2 Up 07:23:13 - 07:53:13 7491
Laughlin/Bullhead City 07:38:18 -31.4 Dark Up 38.5 186.4 Up 07:23:18 - 07:53:18 7490
CPSLO 07:38:41 -30.9 Dark Up 38.6 179.1 Up 07:23:41 - 07:53:41 7474
Mohave Valley 07:38:18 -31.7 Dark Up 38.7 186.5 Up 07:23:18 - 07:53:18 7472
Lake Havasu City 07:38:17 -32.1 Dark Up 39.1 186.8 Up 07:23:17 - 07:53:17 7444
Parker 07:38:17 -32.4 Dark Up 39.5 186.9 Up 07:23:17 - 07:53:17 7420
Wildwood 07:38:32 -32.3 Dark Up 39.8 181.6 Up 07:23:32 - 07:53:32 7400
Idyllwild 07:38:25 -32.8 Dark Up 40.1 183.9 Up 07:23:25 - 07:53:25 7384
Blythe 07:38:18 -33.0 Dark Up 40.0 186.6 Up 07:23:18 - 07:53:18 7382
Calipatria 07:38:20 -33.4 Dark Up 40.6 185.5 Up 07:23:20 - 07:53:20 7343
Yuma 07:38:18 -33.9 Dark Up 40.9 186.6 Up 07:23:18 - 07:53:18 7315

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 04KV18, (2019/06/23 07:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.13  89
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.04  81
PPM 233351     17:37:36.2 -15:34:16  6.2  1.58  75
PPM 233491     17:42:40.3 -15:33:33  7.5  0.62  74
PPM 233503     17:43:19.2 -16:11:57  9.9  0.14  73
04KV18         17:43:46.6 -16:07:00 16.2        73
Positions are for J2000

Event circumstances last updated at 2017/07/01 17:47:37 UT

Marc W. Buie, Southwest Research Institute

RECON