RECON: TNO occultation with 02WL21

Event between 02WL21 and star UC4-573-029482 with event index number of 174349

Geocentric closest approach at 2019/02/04 11:18:20 UTC

J2000 position of star is 06:27:21.9 +24:33:44
Equinox of date position of star is 06:28:27.9 +24:33:01
Stellar brightness R=14.9, use SENSEUP=128
Star is 145 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=24.2

[RECON map]
TNO is 42.0 AU from the Sun and 41.3 AU from the Earth.
The TNO is moving 19.1 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 797 seconds.
The 1-sigma cross-track error in the shadow position is 4592 km.
The sky-plane scale is 29934.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 8.1 sec chord
Diameter=63.2 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02WL21, (2019/02/04 11:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:29.0 +27:58:43  1.1 17.79 162
Alhena         06:38:48.9 +16:22:53  1.9  8.51 147
PPM 095919     06:25:54.3 +25:02:13  6.3  0.77 145
PPM 095926     06:26:11.1 +24:17:25  8.5  0.59 145
PPM 095977     06:28:00.7 +24:44:28  9.7  0.23 145
PPM 096020     06:29:14.8 +24:26:46 10.2  0.19 145
02WL21         06:28:32.2 +24:32:58 14.9       146
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 1.1 sigma about the mid-time.
The median site spacing is 25.6 km RECON observability=0.3 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:14:45 -40.6 Dark Down 20.3 284.5 Low 10:59:45 - 11:29:45 12013
Tonasket 11:14:44 -40.7 Dark Down 20.3 284.5 Low 10:59:44 - 11:29:44 11998
Okanogan 11:14:41 -40.9 Dark Down 20.3 284.5 Low 10:59:41 - 11:29:41 11971
Brewster 11:14:41 -41.2 Dark Down 20.4 284.5 Low 10:59:41 - 11:29:41 11947
Manson/Chelan 11:14:40 -41.5 Dark Down 20.5 284.3 Low 10:59:40 - 11:29:40 11921
Entiat 11:14:39 -41.6 Dark Down 20.5 284.4 Low 10:59:39 - 11:29:39 11904
Wenatchee 11:14:37 -41.8 Dark Down 20.5 284.4 Low 10:59:37 - 11:29:37 11883
Niwot 11:14:12 -33.2 Dark Down 7.8 295.6 Really Low 10:59:12 - 11:29:12 11882
Ellensburg 11:14:36 -42.1 Dark Down 20.6 284.4 Low 10:59:36 - 11:29:36 11848
Pasco 11:14:33 -41.5 Dark Down 19.5 285.6 Really Low 10:59:33 - 11:29:33 11842
PNWRO 11:14:31 -41.5 Dark Down 19.2 285.8 Really Low 10:59:31 - 11:29:31 11832
Yakima 11:14:34 -42.3 Dark Down 20.5 284.5 Low 10:59:34 - 11:29:34 11819
George/Umatilla 11:14:31 -41.8 Dark Down 19.5 285.5 Really Low 10:59:31 - 11:29:31 11811
Toppenish/White Swan 11:14:34 -42.3 Dark Down 20.3 284.7 Low 10:59:34 - 11:29:34 11809
Goldendale 11:14:31 -42.8 Dark Down 20.5 284.6 Low 10:59:31 - 11:29:31 11757
The Dalles 11:14:30 -43.1 Dark Down 20.7 284.4 Low 10:59:30 - 11:29:30 11729
Maupin 11:14:28 -43.2 Dark Down 20.5 284.7 Low 10:59:28 - 11:29:28 11702
Madras/Culver 11:14:27 -43.4 Dark Down 20.4 284.8 Low 10:59:27 - 11:29:27 11661
Redmond 11:14:26 -43.6 Dark Down 20.4 284.9 Low 10:59:26 - 11:29:26 11634
Sisters 11:14:25 -43.9 Dark Down 20.6 284.7 Low 10:59:25 - 11:29:25 11622
Bend 11:14:24 -43.8 Dark Down 20.4 284.9 Low 10:59:24 - 11:29:24 11613
Oregon Observatory 11:14:23 -44.0 Dark Down 20.4 284.9 Low 10:59:23 - 11:29:23 11596
La Pine/Gilchrist 11:14:23 -44.1 Dark Down 20.4 284.9 Low 10:59:23 - 11:29:23 11579
North Lake 11:14:20 -43.9 Dark Down 19.9 285.4 Really Low 10:59:20 - 11:29:20 11567
Paisley 11:14:18 -43.8 Dark Down 19.5 285.8 Really Low 10:59:18 - 11:29:18 11538
Lakeview 11:14:15 -43.9 Dark Down 19.2 286.1 Really Low 10:59:15 - 11:29:15 11507
Chiloquin 11:14:18 -44.8 Dark Down 20.4 285.1 Low 10:59:18 - 11:29:18 11484
Cedarville 11:14:14 -44.0 Dark Down 18.9 286.4 Really Low 10:59:14 - 11:29:14 11463
Klamath Falls 11:14:16 -44.8 Dark Down 20.3 285.3 Low 10:59:16 - 11:29:16 11461
Tulelake 11:14:16 -44.7 Dark Down 20.0 285.5 Really Low 10:59:16 - 11:29:16 11451
Fall River/Burney 11:14:12 -45.0 Dark Down 19.7 285.9 Really Low 10:59:12 - 11:29:12 11384
Susanville 11:14:09 -44.7 Dark Down 19.0 286.5 Really Low 10:59:09 - 11:29:09 11361
Gimple 11:14:08 -44.9 Dark Down 19.1 286.5 Really Low 10:59:08 - 11:29:08 11332
Greenville 11:14:07 -45.0 Dark Down 19.1 286.4 Really Low 10:59:07 - 11:29:07 11330
Reno 11:14:05 -44.4 Dark Down 18.1 287.3 Really Low 10:59:05 - 11:29:05 11324
Portola 11:14:06 -44.8 Dark Down 18.7 286.8 Really Low 10:59:06 - 11:29:06 11321
Quincy 11:14:07 -45.1 Dark Down 19.1 286.5 Really Low 10:59:07 - 11:29:07 11314
Yerington 11:14:02 -44.1 Dark Down 17.5 287.8 Really Low 10:59:02 - 11:29:02 11304
Tonopah 11:14:00 -42.8 Dark Down 15.8 289.1 Really Low 10:59:00 - 11:29:00 11302
Carson City 11:14:04 -44.5 Dark Down 18.0 287.4 Really Low 10:59:04 - 11:29:04 11296
Hawthorne 11:14:00 -43.8 Dark Down 17.0 288.2 Really Low 10:59:00 - 11:29:00 11287
Gardnerville 11:14:03 -44.5 Dark Down 17.9 287.5 Really Low 10:59:03 - 11:29:03 11279
Indian Springs 11:13:53 -42.0 Dark Down 14.1 290.3 Really Low 10:58:53 - 11:28:53 11241
Beatty 11:13:54 -42.8 Dark Down 15.0 289.7 Really Low 10:58:54 - 11:28:54 11227
Henderson 11:13:51 -41.6 Dark Down 13.4 290.8 Really Low 10:58:51 - 11:28:51 11225
Lee Vining 11:14:00 -44.3 Dark Down 17.1 288.1 Really Low 10:59:00 - 11:29:00 11224
DCO 11:13:49 -40.3 Dark Down 11.7 291.9 Really Low 10:58:49 - 11:28:49 11220
Patrick 11:13:49 -40.8 Dark Down 12.4 291.5 Really Low 10:58:49 - 11:28:49 11217
Bishop 11:13:57 -43.9 Dark Down 16.4 288.7 Really Low 10:58:57 - 11:28:57 11204
Kingman/Dolan Springs 11:13:49 -41.0 Dark Down 12.4 291.4 Really Low 10:58:49 - 11:28:49 11192
Searchlight/Boulder City 11:13:49 -41.6 Dark Down 13.2 290.9 Really Low 10:58:49 - 11:28:49 11182
Laughlin/Bullhead City 11:13:48 -41.4 Dark Down 12.8 291.2 Really Low 10:58:48 - 11:28:48 11171
Lone Pine 11:13:54 -43.9 Dark Down 15.9 289.1 Really Low 10:58:54 - 11:28:54 11155
Mohave Valley 11:13:47 -41.4 Dark Down 12.7 291.2 Really Low 10:58:47 - 11:28:47 11149
Lake Havasu City 11:13:47 -41.3 Dark Down 12.4 291.4 Really Low 10:58:47 - 11:28:47 11126
Parker 11:13:46 -41.3 Dark Down 12.2 291.5 Really Low 10:58:46 - 11:28:46 11099
Blythe 11:13:43 -41.7 Dark Down 12.3 291.5 Really Low 10:58:43 - 11:28:43 11045
Idyllwild 11:13:43 -43.4 Dark Down 14.0 290.4 Really Low 10:58:43 - 11:28:43 10973
Calipatria 11:13:41 -42.5 Dark Down 12.8 291.1 Really Low 10:58:41 - 11:28:41 10968
Yuma 11:13:40 -41.8 Dark Down 12.0 291.6 Really Low 10:58:40 - 11:28:40 10967
CPSLO 11:13:50 -46.2 Dark Down 17.5 288.1 Really Low 10:58:50 - 11:28:50 10952
Wildwood 11:13:45 -44.9 Dark Down 15.6 289.4 Really Low 10:58:45 - 11:28:45 10930

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 02WL21, (2019/02/04 11:18UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 17.79 162
Alhena         06:37:42.8 +16:23:57  1.9  8.51 147
PPM 095919     06:24:43.7 +25:02:55  6.3  0.77 145
PPM 095926     06:25:00.9 +24:18:07  8.5  0.59 145
PPM 095977     06:26:50.3 +24:45:14  9.7  0.23 145
PPM 096020     06:28:04.5 +24:27:34 10.2  0.19 145
02WL21         06:27:21.9 +24:33:44 14.9       145
Positions are for J2000

Event circumstances last updated at 2017/12/05 19:13:39 UT

Marc W. Buie, Southwest Research Institute

RECON