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 07:38:23 UTC

J2000 position of star is 17:43:46.5 -16:07:00
Equinox of date position of star is 17:44:50.4 -16:07:25
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 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 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 2.0 sigma about the mid-time.
The median site spacing is 14.3 km RECON observability=1.0 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:40:56 -16.9 AT Up 24.3 181.0 Low 07:25:56 - 07:55:56 6998
Oroville 07:40:55 -17.5 AT Up 24.9 181.1 Low 07:25:55 - 07:55:55 6971
Tonasket 07:40:55 -17.7 AT Up 25.2 181.1 Low 07:25:55 - 07:55:55 6960
Okanogan 07:40:56 -18.1 Dark Up 25.5 181.0 Low 07:25:56 - 07:55:56 6944
Brewster 07:40:56 -18.3 Dark Up 25.8 180.7 Low 07:25:56 - 07:55:56 6930
Manson/Chelan 07:40:57 -18.5 Dark Up 26.0 180.4 Low 07:25:57 - 07:55:57 6918
Entiat 07:40:57 -18.7 Dark Up 26.2 180.3 Low 07:25:57 - 07:55:57 6907
Wenatchee 07:40:58 -19.0 Dark Up 26.5 180.2 Low 07:25:58 - 07:55:58 6894
Ellensburg 07:40:58 -19.4 Dark Up 26.9 179.9 Low 07:25:58 - 07:55:58 6872
Yakima 07:40:58 -19.8 Dark Up 27.3 179.9 Low 07:25:58 - 07:55:58 6852
Toppenish/White Swan 07:40:58 -20.0 Dark Up 27.5 180.1 Low 07:25:58 - 07:55:58 6842
Pasco 07:40:54 -20.2 Dark Up 27.6 181.5 Low 07:25:54 - 07:55:54 6841
PNWRO 07:40:53 -20.5 Dark Up 27.9 181.7 Low 07:25:53 - 07:55:53 6829
George/Umatilla 07:40:54 -20.5 Dark Up 28.0 181.2 Low 07:25:54 - 07:55:54 6823
Goldendale 07:40:59 -20.5 Dark Up 28.1 179.6 Low 07:25:59 - 07:55:59 6811
The Dalles 07:41:00 -20.7 Dark Up 28.3 179.2 Low 07:26:00 - 07:56:00 6797
Maupin 07:41:00 -21.2 Dark Up 28.7 179.4 Low 07:26:00 - 07:56:00 6776
Madras/Culver 07:41:00 -21.7 Dark Up 29.3 179.3 Low 07:26:00 - 07:56:00 6746
Redmond 07:41:00 -22.0 Dark Up 29.6 179.3 Low 07:26:00 - 07:56:00 6726
Sisters 07:41:01 -22.0 Dark Up 29.6 178.8 Low 07:26:01 - 07:56:01 6726
Bend 07:41:00 -22.2 Dark Up 29.8 179.1 Low 07:26:00 - 07:56:00 6714
Oregon Observatory 07:41:01 -22.4 Dark Up 30.0 179.0 Low 07:26:01 - 07:56:01 6704
La Pine/Gilchrist 07:41:01 -22.6 Dark Up 30.2 178.9 Up 07:26:01 - 07:56:01 6692
North Lake 07:40:59 -23.1 Dark Up 30.6 179.5 Up 07:25:59 - 07:55:59 6670
Paisley 07:40:58 -23.7 Dark Up 31.2 179.9 Up 07:25:58 - 07:55:58 6641
Chiloquin 07:41:02 -23.7 Dark Up 31.3 178.5 Up 07:26:02 - 07:56:02 6627
Lakeview 07:40:57 -24.2 Dark Up 31.7 180.2 Up 07:25:57 - 07:55:57 6612
Klamath Falls 07:41:02 -24.0 Dark Up 31.6 178.6 Up 07:26:02 - 07:56:02 6607
Tulelake 07:41:00 -24.3 Dark Up 31.9 178.9 Up 07:26:00 - 07:56:00 6593
Cedarville 07:40:57 -24.8 Dark Up 32.4 180.4 Up 07:25:57 - 07:55:57 6575
Fall River/Burney 07:41:00 -25.2 Dark Up 32.8 179.0 Up 07:26:00 - 07:56:00 6539
Niwot 07:40:04 -25.9 Dark Up 32.0 197.2 Up 07:25:04 - 07:55:04 6516
Susanville 07:40:57 -25.9 Dark Up 33.5 179.8 Up 07:25:57 - 07:55:57 6505
Gimple 07:40:59 -26.2 Dark Up 33.7 179.6 Up 07:25:59 - 07:55:59 6487
Greenville 07:40:59 -26.2 Dark Up 33.7 179.5 Up 07:25:59 - 07:55:59 6487
Quincy 07:40:59 -26.4 Dark Up 33.9 179.5 Up 07:25:59 - 07:55:59 6474
Portola 07:40:57 -26.5 Dark Up 34.1 180.0 Up 07:25:57 - 07:55:57 6469
Reno 07:40:55 -26.8 Dark Up 34.3 180.8 Up 07:25:55 - 07:55:55 6455
Carson City 07:40:55 -27.2 Dark Up 34.7 180.8 Up 07:25:55 - 07:55:55 6433
Yerington 07:40:52 -27.4 Dark Up 34.9 181.5 Up 07:25:52 - 07:55:52 6424
Gardnerville 07:40:54 -27.5 Dark Up 34.9 180.9 Up 07:25:54 - 07:55:54 6418
Hawthorne 07:40:50 -27.9 Dark Up 35.3 182.2 Up 07:25:50 - 07:55:50 6396
Tonopah 07:40:45 -28.5 Dark Up 35.7 183.8 Up 07:25:45 - 07:55:45 6372
Lee Vining 07:40:52 -28.5 Dark Up 35.9 181.6 Up 07:25:52 - 07:55:52 6358
Bishop 07:40:49 -29.1 Dark Up 36.5 182.5 Up 07:25:49 - 07:55:49 6322
Beatty 07:40:43 -29.6 Dark Up 36.9 184.4 Up 07:25:43 - 07:55:43 6298
Indian Springs 07:40:39 -30.0 Dark Up 37.1 185.7 Up 07:25:39 - 07:55:39 6280
Lone Pine 07:40:48 -29.9 Dark Up 37.2 182.9 Up 07:25:48 - 07:55:48 6273
Henderson 07:40:37 -30.5 Dark Up 37.6 186.6 Up 07:25:37 - 07:55:37 6246
Searchlight/Boulder City 07:40:36 -31.1 Dark Up 38.2 186.7 Up 07:25:36 - 07:55:36 6207
Patrick 07:40:32 -31.2 Dark Up 38.1 188.0 Up 07:25:32 - 07:55:32 6206
Kingman/Dolan Springs 07:40:33 -31.4 Dark Up 38.3 187.8 Up 07:25:33 - 07:55:33 6191
Laughlin/Bullhead City 07:40:35 -31.4 Dark Up 38.4 187.1 Up 07:25:35 - 07:55:35 6188
DCO 07:40:30 -31.5 Dark Up 38.3 188.9 Up 07:25:30 - 07:55:30 6187
CPSLO 07:40:57 -31.0 Dark Up 38.6 179.8 Up 07:25:57 - 07:55:57 6172
Mohave Valley 07:40:34 -31.7 Dark Up 38.7 187.2 Up 07:25:34 - 07:55:34 6169
Lake Havasu City 07:40:33 -32.1 Dark Up 39.1 187.5 Up 07:25:33 - 07:55:33 6142
Parker 07:40:33 -32.4 Dark Up 39.4 187.6 Up 07:25:33 - 07:55:33 6117
Wildwood 07:40:49 -32.4 Dark Up 39.8 182.3 Up 07:25:49 - 07:55:49 6098
Idyllwild 07:40:42 -32.8 Dark Up 40.0 184.7 Up 07:25:42 - 07:55:42 6080
Blythe 07:40:34 -33.0 Dark Up 40.0 187.3 Up 07:25:34 - 07:55:34 6079
Calipatria 07:40:38 -33.4 Dark Up 40.5 186.2 Up 07:25:38 - 07:55:38 6041
Yuma 07:40:34 -33.9 Dark Up 40.9 187.3 Up 07:25:34 - 07:55:34 6012

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         17:43:46.5 -16:07:00 15.9        73
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:19:30 UT

Marc W. Buie, Southwest Research Institute

RECON