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 07:38:23 UTC

J2000 position of star is 17:43:46.6 -16:07:00
Equinox of date position of star is 17:44:48.6 -16:07:25
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 460 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 14.3 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 07:38:37 -17.5 AT Up 24.9 180.5 Low 07:23:37 - 07:53:37 8289
Tonasket 07:38:37 -17.7 AT Up 25.2 180.5 Low 07:23:37 - 07:53:37 8278
Okanogan 07:38:37 -18.0 Dark Up 25.5 180.3 Low 07:23:37 - 07:53:37 8261
Brewster 07:38:37 -18.3 Dark Up 25.8 180.1 Low 07:23:37 - 07:53:37 8247
Manson/Chelan 07:38:39 -18.5 Dark Up 26.0 179.7 Low 07:23:39 - 07:53:39 8235
Entiat 07:38:39 -18.7 Dark Up 26.2 179.7 Low 07:23:39 - 07:53:39 8224
Wenatchee 07:38:39 -18.9 Dark Up 26.5 179.6 Low 07:23:39 - 07:53:39 8211
Ellensburg 07:38:40 -19.3 Dark Up 26.9 179.3 Low 07:23:40 - 07:53:40 8190
Yakima 07:38:39 -19.7 Dark Up 27.3 179.3 Low 07:23:39 - 07:53:39 8169
Toppenish/White Swan 07:38:39 -20.0 Dark Up 27.5 179.5 Low 07:23:39 - 07:53:39 8159
Pasco 07:38:35 -20.2 Dark Up 27.6 180.8 Low 07:23:35 - 07:53:35 8158
PNWRO 07:38:35 -20.4 Dark Up 27.9 181.1 Low 07:23:35 - 07:53:35 8146
George/Umatilla 07:38:36 -20.5 Dark Up 28.0 180.6 Low 07:23:36 - 07:53:36 8140
Goldendale 07:38:40 -20.5 Dark Up 28.1 179.0 Low 07:23:40 - 07:53:40 8128
The Dalles 07:38:42 -20.7 Dark Up 28.3 178.6 Low 07:23:42 - 07:53:42 8114
Maupin 07:38:41 -21.1 Dark Up 28.7 178.7 Low 07:23:41 - 07:53:41 8093
Madras/Culver 07:38:41 -21.6 Dark Up 29.2 178.7 Low 07:23:41 - 07:53:41 8063
Redmond 07:38:41 -22.0 Dark Up 29.6 178.6 Low 07:23:41 - 07:53:41 8043
Sisters 07:38:43 -21.9 Dark Up 29.6 178.2 Low 07:23:43 - 07:53:43 8043
Bend 07:38:42 -22.2 Dark Up 29.8 178.5 Low 07:23:42 - 07:53:42 8031
Oregon Observatory 07:38:42 -22.4 Dark Up 30.0 178.3 Low 07:23:42 - 07:53:42 8020
La Pine/Gilchrist 07:38:42 -22.6 Dark Up 30.2 178.2 Up 07:23:42 - 07:53:42 8009
North Lake 07:38:40 -23.0 Dark Up 30.6 178.9 Up 07:23:40 - 07:53:40 7987
Paisley 07:38:40 -23.6 Dark Up 31.2 179.3 Up 07:23:40 - 07:53:40 7958
Chiloquin 07:38:44 -23.6 Dark Up 31.3 177.8 Up 07:23:44 - 07:53:44 7943
Lakeview 07:38:39 -24.1 Dark Up 31.7 179.5 Up 07:23:39 - 07:53:39 7929
Klamath Falls 07:38:44 -24.0 Dark Up 31.6 177.9 Up 07:23:44 - 07:53:44 7924
Tulelake 07:38:42 -24.3 Dark Up 31.9 178.2 Up 07:23:42 - 07:53:42 7910
Cedarville 07:38:38 -24.8 Dark Up 32.4 179.7 Up 07:23:38 - 07:53:38 7892
Fall River/Burney 07:38:42 -25.2 Dark Up 32.8 178.3 Up 07:23:42 - 07:53:42 7856
Niwot 07:37:46 -25.9 Dark Up 32.2 196.5 Up 07:22:46 - 07:52:46 7837
Susanville 07:38:39 -25.9 Dark Up 33.5 179.1 Up 07:23:39 - 07:53:39 7822
Gimple 07:38:40 -26.1 Dark Up 33.7 178.9 Up 07:23:40 - 07:53:40 7804
Greenville 07:38:40 -26.1 Dark Up 33.7 178.8 Up 07:23:40 - 07:53:40 7803
Quincy 07:38:40 -26.3 Dark Up 33.9 178.8 Up 07:23:40 - 07:53:40 7791
Portola 07:38:39 -26.5 Dark Up 34.1 179.3 Up 07:23:39 - 07:53:39 7786
Reno 07:38:36 -26.8 Dark Up 34.3 180.1 Up 07:23:36 - 07:53:36 7772
Carson City 07:38:36 -27.2 Dark Up 34.7 180.1 Up 07:23:36 - 07:53:36 7750
Yerington 07:38:34 -27.4 Dark Up 34.9 180.9 Up 07:23:34 - 07:53:34 7741
Gardnerville 07:38:36 -27.4 Dark Up 34.9 180.2 Up 07:23:36 - 07:53:36 7735
Hawthorne 07:38:31 -27.9 Dark Up 35.3 181.5 Up 07:23:31 - 07:53:31 7714
Tonopah 07:38:27 -28.4 Dark Up 35.8 183.1 Up 07:23:27 - 07:53:27 7690
Lee Vining 07:38:34 -28.4 Dark Up 35.9 180.9 Up 07:23:34 - 07:53:34 7675
Bishop 07:38:31 -29.1 Dark Up 36.5 181.8 Up 07:23:31 - 07:53:31 7639
Beatty 07:38:25 -29.6 Dark Up 36.9 183.7 Up 07:23:25 - 07:53:25 7616
Indian Springs 07:38:21 -30.0 Dark Up 37.2 185.0 Up 07:23:21 - 07:53:21 7598
Lone Pine 07:38:30 -29.9 Dark Up 37.3 182.2 Up 07:23:30 - 07:53:30 7590
Henderson 07:38:18 -30.5 Dark Up 37.6 185.9 Up 07:23:18 - 07:53:18 7564
Searchlight/Boulder City 07:38:17 -31.1 Dark Up 38.2 186.0 Up 07:23:17 - 07:53:17 7525
Patrick 07:38:13 -31.2 Dark Up 38.2 187.3 Up 07:23:13 - 07:53:13 7525
Kingman/Dolan Springs 07:38:14 -31.4 Dark Up 38.4 187.1 Up 07:23:14 - 07:53:14 7509
Laughlin/Bullhead City 07:38:16 -31.4 Dark Up 38.5 186.4 Up 07:23:16 - 07:53:16 7506
DCO 07:38:11 -31.5 Dark Up 38.4 188.1 Up 07:23:11 - 07:53:11 7505
CPSLO 07:38:39 -30.9 Dark Up 38.6 179.1 Up 07:23:39 - 07:53:39 7489
Mohave Valley 07:38:16 -31.7 Dark Up 38.7 186.5 Up 07:23:16 - 07:53:16 7487
Lake Havasu City 07:38:15 -32.1 Dark Up 39.1 186.8 Up 07:23:15 - 07:53:15 7460
Parker 07:38:15 -32.4 Dark Up 39.5 186.9 Up 07:23:15 - 07:53:15 7435
Wildwood 07:38:31 -32.3 Dark Up 39.8 181.6 Up 07:23:31 - 07:53:31 7415
Idyllwild 07:38:24 -32.8 Dark Up 40.1 183.9 Up 07:23:24 - 07:53:24 7398
Blythe 07:38:16 -33.0 Dark Up 40.0 186.6 Up 07:23:16 - 07:53:16 7397
Calipatria 07:38:19 -33.4 Dark Up 40.6 185.4 Up 07:23:19 - 07:53:19 7359
Yuma 07:38:15 -33.9 Dark Up 40.9 186.6 Up 07:23:15 - 07:53:15 7330

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 2017/12/06 19:03:59 UT

Marc W. Buie, Southwest Research Institute

RECON