RECON: TNO occultation with 04KV18

Event between 04KV18 and star GA0720:13943836 with event index number of 195249

Geocentric closest approach at 2019/06/23 06:44:02 UTC

J2000 position of star is 17:43:46.5 -16:07:00
Equinox of date position of star is 17:44:53.8 -16:07:27
Stellar brightness G=15.9, 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 243 seconds.
The 1-sigma cross-track error in the shadow position is 1436 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 06:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:36.3 -26:28:25  0.9 20.13  88
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  74
PPM 233491     17:43:47.4 -15:34:02  7.5  0.62  73
PPM 233503     17:44:26.6 -16:12:25  9.9  0.14  73
04KV18         17:44:53.9 -16:07:27 15.9        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 3.7 sigma about the mid-time.
The median site spacing is 12.4 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:44:55 -14.8 AT Down 23.0 166.5 Low 06:29:55 - 06:59:55 8482
Summerland 06:44:56 -15.0 AT Down 23.2 166.2 Low 06:29:56 - 06:59:56 8465
Penticton 06:44:56 -15.1 AT Down 23.3 166.3 Low 06:29:56 - 06:59:56 8463
Okanagan Falls 06:44:56 -15.3 AT Down 23.5 166.2 Low 06:29:56 - 06:59:56 8454
Oliver 06:44:56 -15.5 AT Down 23.7 166.2 Low 06:29:56 - 06:59:56 8446
Anarchist Mountain Observatory 06:44:56 -15.7 AT Down 23.9 166.4 Low 06:29:56 - 06:59:56 8440
Oroville 06:44:56 -15.7 AT Down 23.9 166.3 Low 06:29:56 - 06:59:56 8435
Tonasket 06:44:56 -16.0 AT Down 24.2 166.3 Low 06:29:56 - 06:59:56 8424
Okanogan 06:44:57 -16.2 AT Down 24.5 166.1 Low 06:29:57 - 06:59:57 8406
Brewster 06:44:57 -16.5 AT Down 24.7 165.9 Low 06:29:57 - 06:59:57 8391
Manson/Chelan 06:44:58 -16.6 AT Down 24.8 165.5 Low 06:29:58 - 06:59:58 8377
Entiat 06:44:59 -16.8 AT Down 25.0 165.4 Low 06:29:59 - 06:59:59 8365
Wenatchee 06:44:59 -17.0 AT Down 25.3 165.2 Low 06:29:59 - 06:59:59 8351
Ellensburg 06:45:01 -17.3 AT Down 25.6 165.0 Low 06:30:01 - 07:00:01 8328
Yakima 06:45:01 -17.7 AT Down 26.0 164.9 Low 06:30:01 - 07:00:01 8306
Pasco 06:44:57 -18.3 Dark Down 26.6 166.4 Low 06:29:57 - 06:59:57 8302
Toppenish/White Swan 06:45:00 -18.0 AT Down 26.3 165.1 Low 06:30:00 - 07:00:00 8297
PNWRO 06:44:57 -18.6 Dark Down 26.9 166.6 Low 06:29:57 - 06:59:57 8291
George/Umatilla 06:44:57 -18.6 Dark Down 26.9 166.1 Low 06:29:57 - 06:59:57 8282
Goldendale 06:45:02 -18.4 Dark Down 26.7 164.5 Low 06:30:02 - 07:00:02 8263
The Dalles 06:45:03 -18.5 Dark Down 26.9 164.1 Low 06:30:03 - 07:00:03 8247
Maupin 06:45:03 -18.9 Dark Down 27.3 164.2 Low 06:30:03 - 07:00:03 8225
Madras/Culver 06:45:04 -19.4 Dark Down 27.8 164.1 Low 06:30:04 - 07:00:04 8194
Redmond 06:45:04 -19.8 Dark Down 28.1 164.0 Low 06:30:04 - 07:00:04 8174
Sisters 06:45:05 -19.6 Dark Down 28.0 163.5 Low 06:30:05 - 07:00:05 8171
Bend 06:45:05 -19.9 Dark Down 28.3 163.8 Low 06:30:05 - 07:00:05 8160
Oregon Observatory 06:45:06 -20.1 Dark Down 28.5 163.6 Low 06:30:06 - 07:00:06 8149
La Pine/Gilchrist 06:45:06 -20.2 Dark Down 28.6 163.5 Low 06:30:06 - 07:00:06 8136
North Lake 06:45:04 -20.8 Dark Down 29.2 164.1 Low 06:30:04 - 07:00:04 8117
Paisley 06:45:04 -21.4 Dark Down 29.8 164.4 Low 06:30:04 - 07:00:04 8089
Chiloquin 06:45:08 -21.2 Dark Down 29.6 163.0 Low 06:30:08 - 07:00:08 8067
Lakeview 06:45:02 -21.9 Dark Down 30.3 164.5 Up 06:30:02 - 07:00:02 8060
Klamath Falls 06:45:08 -21.5 Dark Down 30.0 163.0 Low 06:30:08 - 07:00:08 8048
Niwot 06:44:12 -26.3 Dark Up 33.8 181.3 Up 06:29:12 - 06:59:12 8047
SwRI 06:44:11 -26.4 Dark Up 33.9 181.2 Up 06:29:11 - 06:59:11 8040
Tulelake 06:45:07 -21.9 Dark Down 30.3 163.3 Up 06:30:07 - 07:00:07 8035
Cedarville 06:45:03 -22.6 Dark Down 31.0 164.6 Up 06:30:03 - 07:00:03 8023
Fall River/Burney 06:45:07 -22.7 Dark Down 31.2 163.2 Up 06:30:07 - 07:00:07 7980
Susanville 06:45:05 -23.5 Dark Down 32.0 163.9 Up 06:30:05 - 07:00:05 7949
Gimple 06:45:06 -23.7 Dark Down 32.2 163.6 Up 06:30:06 - 07:00:06 7929
Greenville 06:45:06 -23.7 Dark Down 32.2 163.5 Up 06:30:06 - 07:00:06 7928
Quincy 06:45:06 -23.9 Dark Down 32.3 163.5 Up 06:30:06 - 07:00:06 7915
Portola 06:45:05 -24.1 Dark Down 32.6 164.0 Up 06:30:05 - 07:00:05 7912
Reno 06:45:02 -24.6 Dark Down 33.0 164.7 Up 06:30:02 - 07:00:02 7902
Carson City 06:45:03 -24.9 Dark Down 33.3 164.6 Up 06:30:03 - 07:00:03 7879
Yerington 06:45:01 -25.2 Dark Down 33.6 165.3 Up 06:30:01 - 07:00:01 7873
Gardnerville 06:45:03 -25.1 Dark Down 33.6 164.6 Up 06:30:03 - 07:00:03 7864
Hawthorne 06:44:59 -25.8 Dark Down 34.2 165.8 Up 06:29:59 - 06:59:59 7848
Tonopah 06:44:55 -26.6 Dark Down 34.9 167.4 Up 06:29:55 - 06:59:55 7832
Lee Vining 06:45:01 -26.2 Dark Down 34.6 165.2 Up 06:30:01 - 07:00:01 7806
Bishop 06:44:59 -27.0 Dark Down 35.4 165.9 Up 06:29:59 - 06:59:59 7774
Beatty 06:44:54 -27.8 Dark Down 36.1 167.7 Up 06:29:54 - 06:59:54 7759
Indian Springs 06:44:49 -28.4 Dark Down 36.6 168.9 Up 06:29:49 - 06:59:49 7746
Lone Pine 06:44:58 -27.8 Dark Down 36.2 166.1 Up 06:29:58 - 06:59:58 7725
Henderson 06:44:47 -29.0 Dark Down 37.2 169.6 Up 06:29:47 - 06:59:47 7716
Patrick 06:44:43 -29.8 Dark Down 38.0 170.9 Up 06:29:43 - 06:59:43 7683
Searchlight/Boulder City 06:44:47 -29.6 Dark Down 37.8 169.6 Up 06:29:47 - 06:59:47 7677
DCO 06:44:41 -30.3 Dark Down 38.4 171.7 Up 06:29:41 - 06:59:41 7667
Kingman/Dolan Springs 06:44:44 -30.0 Dark Down 38.2 170.6 Up 06:29:44 - 06:59:44 7665
Laughlin/Bullhead City 06:44:46 -29.9 Dark Down 38.1 170.0 Up 06:29:46 - 06:59:46 7659
Mohave Valley 06:44:45 -30.2 Dark Down 38.4 170.0 Up 06:29:45 - 06:59:45 7640
Lake Havasu City 06:44:45 -30.6 Dark Down 38.8 170.2 Up 06:29:45 - 06:59:45 7614
CPSLO 06:45:08 -28.3 Dark Down 36.9 162.9 Up 06:30:08 - 07:00:08 7608
Parker 06:44:45 -31.0 Dark Down 39.2 170.2 Up 06:29:45 - 06:59:45 7589
Blythe 06:44:46 -31.4 Dark Down 39.7 169.8 Up 06:29:46 - 06:59:46 7549
Wildwood 06:45:01 -30.0 Dark Down 38.5 165.0 Up 06:30:01 - 07:00:01 7544
Idyllwild 06:44:54 -30.8 Dark Down 39.2 167.2 Up 06:29:54 - 06:59:54 7537
Calipatria 06:44:50 -31.7 Dark Down 40.0 168.6 Up 06:29:50 - 06:59:50 7505
Yuma 06:44:46 -32.3 Dark Down 40.6 169.6 Up 06:29:46 - 06:59:46 7481

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 06:44UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.13  88
35Eta Oph      17:10:22.7 -15:43:29  2.6  8.04  81
PPM 233351     17:37:36.2 -15:34:15  6.2  1.58  74
PPM 233491     17:42:40.3 -15:33:33  7.5  0.62  73
PPM 233503     17:43:19.2 -16:11:57  9.9  0.14  73
04KV18         17:43:46.5 -16:07:00 15.9        73
Positions are for J2000

Event circumstances last updated at 2019/06/07 22:19:10 UT

Marc W. Buie, Southwest Research Institute

RECON