RECON: TNO occultation with 04KV18

Event between 04KV18 and star UC4-367-097218 with event index number of 124035

Geocentric closest approach at 2018/05/10 09:32:47 UTC

J2000 position of star is 17:39:03.5 -16:38:44
Equinox of date position of star is 17:40:05.8 -16:39:16
Stellar brightness R=16.4, use SENSEUP=128
Star is 81 degrees from the moon. Moon is 28% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 29.5 AU from the Sun and 28.7 AU from the Earth.
The TNO is moving 18.7 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 426 seconds.
The 1-sigma cross-track error in the shadow position is 2746 km.
The sky-plane scale is 20825.6 km/arcsec.

The TNO has an absolute magnitude Hv=9.0
Diameter=95.5 km assuming a 5% albedo -- 5.1 sec chord
Diameter=39.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 04KV18, (2018/05/10 09:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:32.1 -26:28:16  0.9 18.89  96
35Eta Oph      17:11:25.9 -15:44:47  2.6  6.95  88
PPM 233351     17:38:39.5 -15:34:51  6.2  1.13  82
PPM 233369     17:39:26.7 -16:33:15 10.0  0.19  81
04KV18         17:40:07.3 -16:39:17 16.4        81
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 2.1 sigma about the mid-time.
The median site spacing is 12.8 km RECON observability=1.0 and success probability=8.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:34:37 -19.8 Dark Down 23.5 167.0 Low 09:19:37 - 09:49:37 2040
Tonasket 09:34:37 -20.0 Dark Down 23.7 167.0 Low 09:19:37 - 09:49:37 2028
Okanogan 09:34:38 -20.3 Dark Down 24.0 166.8 Low 09:19:38 - 09:49:38 2009
Brewster 09:34:39 -20.6 Dark Down 24.3 166.6 Low 09:19:39 - 09:49:39 1991
Manson/Chelan 09:34:41 -20.9 Dark Down 24.4 166.2 Low 09:19:41 - 09:49:41 1973
Entiat 09:34:41 -21.1 Dark Down 24.6 166.1 Low 09:19:41 - 09:49:41 1961
Wenatchee 09:34:42 -21.4 Dark Down 24.8 166.0 Low 09:19:42 - 09:49:42 1946
Ellensburg 09:34:42 -21.8 Dark Down 25.2 165.7 Low 09:19:42 - 09:49:42 1920
Pasco 09:34:37 -22.1 Dark Down 26.2 167.1 Low 09:19:37 - 09:49:37 1908
PNWRO 09:34:37 -22.2 Dark Down 26.4 167.3 Low 09:19:37 - 09:49:37 1899
Yakima 09:34:43 -22.2 Dark Down 25.6 165.6 Low 09:19:43 - 09:49:43 1898
Toppenish/White Swan 09:34:42 -22.3 Dark Down 25.8 165.8 Low 09:19:42 - 09:49:42 1889
George/Umatilla 09:34:38 -22.5 Dark Down 26.5 166.8 Low 09:19:38 - 09:49:38 1886
Goldendale 09:34:44 -23.0 Dark Down 26.3 165.3 Low 09:19:44 - 09:49:44 1851
The Dalles 09:34:46 -23.3 Dark Down 26.5 164.9 Low 09:19:46 - 09:49:46 1831
Niwot 09:33:39 -21.7 Dark Up 33.2 181.9 Up 09:18:39 - 09:48:39 1815
Maupin 09:34:45 -23.6 Dark Down 26.9 164.9 Low 09:19:45 - 09:49:45 1810
Madras/Culver 09:34:46 -24.1 Dark Down 27.4 164.8 Low 09:19:46 - 09:49:46 1778
Redmond 09:34:46 -24.5 Dark Down 27.7 164.7 Low 09:19:46 - 09:49:46 1757
Sisters 09:34:48 -24.6 Dark Down 27.6 164.3 Low 09:19:48 - 09:49:48 1750
Bend 09:34:47 -24.7 Dark Down 27.9 164.5 Low 09:19:47 - 09:49:47 1741
Oregon Observatory 09:34:47 -24.9 Dark Down 28.1 164.4 Low 09:19:47 - 09:49:47 1728
La Pine/Gilchrist 09:34:48 -25.1 Dark Down 28.2 164.3 Low 09:19:48 - 09:49:48 1715
North Lake 09:34:45 -25.3 Dark Down 28.8 164.8 Low 09:19:45 - 09:49:45 1703
Paisley 09:34:44 -25.7 Dark Down 29.4 165.1 Low 09:19:44 - 09:49:44 1677
Lakeview 09:34:44 -26.1 Dark Down 29.9 165.3 Low 09:19:44 - 09:49:44 1651
Chiloquin 09:34:49 -26.2 Dark Down 29.2 163.7 Low 09:19:49 - 09:49:49 1642
Klamath Falls 09:34:49 -26.5 Dark Down 29.6 163.8 Low 09:19:49 - 09:49:49 1623
Cedarville 09:34:43 -26.6 Dark Down 30.6 165.4 Up 09:19:43 - 09:49:43 1615
Tulelake 09:34:48 -26.7 Dark Down 29.9 164.0 Low 09:19:48 - 09:49:48 1613
Fall River/Burney 09:34:48 -27.5 Dark Down 30.8 164.0 Up 09:19:48 - 09:49:48 1558
Susanville 09:34:45 -27.8 Dark Down 31.6 164.7 Up 09:19:45 - 09:49:45 1535
Gimple 09:34:46 -28.1 Dark Down 31.8 164.4 Up 09:19:46 - 09:49:46 1513
Greenville 09:34:47 -28.2 Dark Down 31.8 164.3 Up 09:19:47 - 09:49:47 1511
Portola 09:34:44 -28.3 Dark Down 32.2 164.8 Up 09:19:44 - 09:49:44 1501
Quincy 09:34:47 -28.3 Dark Down 32.0 164.3 Up 09:19:47 - 09:49:47 1498
Reno 09:34:42 -28.3 Dark Down 32.6 165.5 Up 09:19:42 - 09:49:42 1498
Yerington 09:34:39 -28.6 Dark Down 33.2 166.1 Up 09:19:39 - 09:49:39 1477
Carson City 09:34:42 -28.6 Dark Down 32.9 165.4 Up 09:19:42 - 09:49:42 1475
Gardnerville 09:34:42 -28.8 Dark Down 33.2 165.4 Up 09:19:42 - 09:49:42 1461
Tonopah 09:34:31 -28.7 Dark Down 34.5 168.1 Up 09:19:31 - 09:49:31 1458
Hawthorne 09:34:37 -28.8 Dark Down 33.8 166.6 Up 09:19:37 - 09:49:37 1458
Lee Vining 09:34:39 -29.5 Dark Down 34.2 166.0 Up 09:19:39 - 09:49:39 1410
Indian Springs 09:34:24 -29.3 Dark Down 36.1 169.7 Up 09:19:24 - 09:49:24 1393
Beatty 09:34:29 -29.5 Dark Down 35.7 168.5 Up 09:19:29 - 09:49:29 1391
Bishop 09:34:36 -29.7 Dark Down 34.9 166.7 Up 09:19:36 - 09:49:36 1386
Henderson 09:34:21 -29.5 Dark Down 36.8 170.4 Up 09:19:21 - 09:49:21 1371
Patrick 09:34:15 -29.5 Dark Down 37.5 171.6 Up 09:19:15 - 09:49:15 1352
DCO 09:34:12 -29.5 Dark Down 37.9 172.4 Up 09:19:12 - 09:49:12 1346
Lone Pine 09:34:34 -30.3 Dark Down 35.7 166.9 Up 09:19:34 - 09:49:34 1342
Searchlight/Boulder City 09:34:20 -29.9 Dark Down 37.3 170.4 Up 09:19:20 - 09:49:20 1333
Kingman/Dolan Springs 09:34:16 -29.8 Dark Down 37.7 171.4 Up 09:19:16 - 09:49:16 1333
Laughlin/Bullhead City 09:34:19 -30.0 Dark Down 37.7 170.8 Up 09:19:19 - 09:49:19 1320
Mohave Valley 09:34:19 -30.3 Dark Down 38.0 170.7 Up 09:19:19 - 09:49:19 1301
Lake Havasu City 09:34:17 -30.5 Dark Down 38.4 171.0 Up 09:19:17 - 09:49:17 1279
Parker 09:34:17 -30.8 Dark Down 38.7 171.0 Up 09:19:17 - 09:49:17 1255
Blythe 09:34:18 -31.3 Dark Down 39.2 170.5 Up 09:19:18 - 09:49:18 1211
CPSLO 09:34:46 -32.4 Dark Down 36.5 163.7 Up 09:19:46 - 09:49:46 1193
Idyllwild 09:34:28 -32.2 Dark Down 38.8 168.0 Up 09:19:28 - 09:49:28 1172
Calipatria 09:34:23 -32.2 Dark Down 39.6 169.3 Up 09:19:23 - 09:49:23 1155
Wildwood 09:34:37 -32.7 Dark Down 38.1 165.9 Up 09:19:37 - 09:49:37 1155
Yuma 09:34:18 -32.1 Dark Down 40.1 170.4 Up 09:19:18 - 09:49:18 1144

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, (2018/05/10 09:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.89  96
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.95  88
PPM 233351     17:37:36.2 -15:34:16  6.2  1.13  82
PPM 233369     17:38:23.0 -16:32:41 10.0  0.19  81
04KV18         17:39:03.5 -16:38:44 16.4        81
Positions are for J2000

Event circumstances last updated at 2017/12/02 17:30:57 UT

Marc W. Buie, Southwest Research Institute

RECON