RECON: TNO occultation with 04KF19

Event between 04KF19 and star UC4-341-082005 with event index number of 126436

Geocentric closest approach at 2018/03/04 11:32:38 UTC

J2000 position of star is 16:29:58.7 -21:56:09
Equinox of date position of star is 16:31:00.5 -21:58:21
Stellar brightness R=16.4, use SENSEUP=128
Star is 54 degrees from the moon. Moon is 92% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 41.3 AU from the Sun and 41.2 AU from the Earth.
The TNO is moving 2.9 km/sec on the sky relative to the star, or, 0.4 arcsec/hr.
The 1-sigma error in the time of the event is 3247 seconds.
The 1-sigma cross-track error in the shadow position is 5780 km.
The sky-plane scale is 29913.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=227.0 km assuming a 5% albedo -- 77.4 sec chord
Diameter=92.7 km assuming a 30% albedo -- 31.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 04KF19, (2018/03/04 11:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.5 -26:28:15  0.9  4.50  55
8Bet1Sco       16:06:29.8 -19:51:14  2.6  6.11  48
4Psi Oph       16:25:10.1 -20:04:42  4.2  2.34  52
PPM 265578     16:30:24.3 -21:36:28  8.5  0.40  53
PPM 265588     16:30:58.0 -21:52:09  9.9  0.11  54
04KF19         16:31:03.6 -21:58:28 16.4        54
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 0.3 sigma about the mid-time.
The median site spacing is 12.8 km RECON observability=0.4 and success probability=4.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:12:51 -32.6 Dark Up 12.0 145.6 Really Low 10:57:51 - 11:27:51 1698
Tonasket 11:12:47 -32.7 Dark Up 12.2 145.6 Really Low 10:57:47 - 11:27:47 1686
Okanogan 11:12:40 -33.0 Dark Up 12.4 145.4 Really Low 10:57:40 - 11:27:40 1664
Brewster 11:12:31 -33.3 Dark Up 12.5 145.1 Really Low 10:57:31 - 11:27:31 1644
Manson/Chelan 11:12:21 -33.6 Dark Up 12.5 144.8 Really Low 10:57:21 - 11:27:21 1622
Niwot 11:17:10 -25.9 Dark Up 24.9 158.3 Low 11:02:10 - 11:32:10 1621
Entiat 11:12:16 -33.8 Dark Up 12.7 144.6 Really Low 10:57:16 - 11:27:16 1608
Wenatchee 11:12:10 -34.0 Dark Up 12.8 144.5 Really Low 10:57:10 - 11:27:10 1591
Pasco 11:12:15 -33.9 Dark Up 14.3 145.4 Really Low 10:57:15 - 11:27:15 1562
Ellensburg 11:12:00 -34.4 Dark Up 13.1 144.2 Really Low 10:57:00 - 11:27:00 1562
PNWRO 11:12:21 -33.8 Dark Up 14.6 145.6 Really Low 10:57:21 - 11:27:21 1556
Yakima 11:11:53 -34.6 Dark Up 13.4 144.1 Really Low 10:56:53 - 11:26:53 1539
George/Umatilla 11:12:10 -34.2 Dark Up 14.5 145.1 Really Low 10:57:10 - 11:27:10 1537
Toppenish/White Swan 11:11:53 -34.6 Dark Up 13.6 144.2 Really Low 10:56:53 - 11:26:53 1531
Goldendale 11:11:36 -35.2 Dark Up 13.9 143.7 Really Low 10:56:36 - 11:26:36 1487
The Dalles 11:11:20 -35.6 Dark Up 13.9 143.3 Really Low 10:56:20 - 11:26:20 1462
Maupin 11:11:20 -35.7 Dark Up 14.3 143.4 Really Low 10:56:20 - 11:26:20 1441
Madras/Culver 11:11:14 -36.1 Dark Up 14.7 143.2 Really Low 10:56:14 - 11:26:14 1408
Redmond 11:11:08 -36.3 Dark Up 14.9 143.1 Really Low 10:56:08 - 11:26:08 1385
Sisters 11:11:01 -36.5 Dark Up 14.7 142.7 Really Low 10:56:01 - 11:26:01 1374
Bend 11:11:03 -36.5 Dark Up 15.0 142.9 Really Low 10:56:03 - 11:26:03 1368
Oregon Observatory 11:10:57 -36.7 Dark Up 15.1 142.8 Really Low 10:55:57 - 11:25:57 1353
La Pine/Gilchrist 11:10:54 -36.8 Dark Up 15.2 142.7 Really Low 10:55:54 - 11:25:54 1339
North Lake 11:11:01 -36.7 Dark Up 15.8 143.1 Really Low 10:56:01 - 11:26:01 1331
Paisley 11:11:01 -36.7 Dark Up 16.4 143.3 Really Low 10:56:01 - 11:26:01 1309
Lakeview 11:10:57 -36.9 Dark Up 16.9 143.4 Really Low 10:55:57 - 11:25:57 1283
Chiloquin 11:10:29 -37.7 Dark Up 15.9 142.1 Really Low 10:55:29 - 11:25:29 1258
Cedarville 11:10:51 -37.1 Dark Up 17.5 143.4 Really Low 10:55:51 - 11:25:51 1247
Klamath Falls 11:10:26 -37.8 Dark Up 16.2 142.1 Really Low 10:55:26 - 11:25:26 1239
Tulelake 11:10:29 -37.8 Dark Up 16.6 142.3 Really Low 10:55:29 - 11:25:29 1231
Fall River/Burney 11:10:19 -38.2 Dark Up 17.3 142.2 Really Low 10:55:19 - 11:25:19 1175
Susanville 11:10:23 -38.0 Dark Up 18.1 142.7 Really Low 10:55:23 - 11:25:23 1159
Gimple 11:10:22 -38.3 Dark Up 18.3 142.5 Really Low 10:55:22 - 11:25:22 1134
Greenville 11:10:17 -38.4 Dark Up 18.2 142.4 Really Low 10:55:17 - 11:25:17 1131
Reno 11:10:37 -37.8 Dark Up 19.3 143.3 Really Low 10:55:37 - 11:25:37 1130
Portola 11:10:26 -38.2 Dark Up 18.7 142.7 Really Low 10:55:26 - 11:25:26 1126
Tonopah 11:11:24 -36.5 Dark Up 21.7 145.4 Low 10:56:24 - 11:26:24 1120
Quincy 11:10:16 -38.5 Dark Up 18.4 142.3 Really Low 10:55:16 - 11:25:16 1118
Yerington 11:10:47 -37.6 Dark Up 20.0 143.8 Low 10:55:47 - 11:25:47 1115
Carson City 11:10:33 -38.0 Dark Up 19.5 143.2 Really Low 10:55:33 - 11:25:33 1107
Hawthorne 11:10:55 -37.4 Dark Up 20.7 144.1 Low 10:55:55 - 11:25:55 1102
Gardnerville 11:10:30 -38.1 Dark Up 19.8 143.2 Really Low 10:55:30 - 11:25:30 1092
Indian Springs 11:11:53 -35.9 Dark Up 23.7 146.5 Low 10:56:53 - 11:26:53 1071
Henderson 11:12:08 -35.5 Dark Up 24.5 147.0 Low 10:57:08 - 11:27:08 1058
Beatty 11:11:26 -36.6 Dark Up 22.9 145.5 Low 10:56:26 - 11:26:26 1056
DCO 11:12:47 -34.3 Dark Up 26.1 148.6 Low 10:57:47 - 11:27:47 1056
Patrick 11:12:34 -34.8 Dark Up 25.5 148.0 Low 10:57:34 - 11:27:34 1053
Lee Vining 11:10:35 -38.1 Dark Up 20.8 143.5 Low 10:55:35 - 11:25:35 1048
Bishop 11:10:50 -37.7 Dark Up 21.7 144.1 Low 10:55:50 - 11:25:50 1032
Kingman/Dolan Springs 11:12:25 -35.0 Dark Up 25.6 147.7 Low 10:57:25 - 11:27:25 1031
Searchlight/Boulder City 11:12:02 -35.6 Dark Up 25.0 146.9 Low 10:57:02 - 11:27:02 1020
Laughlin/Bullhead City 11:12:11 -35.5 Dark Up 25.4 147.2 Low 10:57:11 - 11:27:11 1011
Mohave Valley 11:12:06 -35.6 Dark Up 25.6 147.1 Low 10:57:06 - 11:27:06 992
Lone Pine 11:10:49 -37.8 Dark Up 22.5 144.2 Low 10:55:49 - 11:25:49 991
Lake Havasu City 11:12:15 -35.5 Dark Up 26.1 147.3 Low 10:57:15 - 11:27:15 973
Parker 11:12:10 -35.6 Dark Up 26.4 147.2 Low 10:57:10 - 11:27:10 949
Blythe 11:11:58 -36.0 Dark Up 26.7 146.7 Low 10:56:58 - 11:26:58 901
Idyllwild 11:11:02 -37.8 Dark Up 25.5 144.6 Low 10:56:02 - 11:26:02 835
Yuma 11:11:53 -36.4 Dark Up 27.4 146.4 Low 10:56:53 - 11:26:53 833
Calipatria 11:11:29 -37.0 Dark Up 26.6 145.6 Low 10:56:29 - 11:26:29 832
CPSLO 11:09:34 -40.5 Dark Up 22.1 141.4 Low 10:54:34 - 11:24:34 805
Wildwood 11:10:12 -39.3 Dark Up 24.1 142.9 Low 10:55:12 - 11:25:12 793

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 04KF19, (2018/03/04 11:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:55  0.9  4.50  55
8Bet1Sco       16:05:26.2 -19:48:20  2.6  6.11  48
4Psi Oph       16:24:06.1 -20:02:15  4.2  2.34  52
PPM 265578     16:29:19.6 -21:34:08  8.5  0.40  53
PPM 265588     16:29:53.1 -21:49:51  9.9  0.11  54
04KF19         16:29:58.7 -21:56:09 16.4        54
Positions are for J2000

Event circumstances last updated at 2017/04/24 16:20:24 UT

Marc W. Buie, Southwest Research Institute

RECON