RECON: TNO occultation with 02WL21

Event between 02WL21 and star GA1140:02316193 with event index number of 163682

Geocentric closest approach at 2018/12/08 12:50:42 UTC

J2000 position of star is 06:32:16.4 +24:30:02
Equinox of date position of star is 06:33:25.4 +24:29:08
Stellar brightness G=16.6, use SENSEUP=128
Star is 172 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=24.2

[RECON map]
TNO is 42.0 AU from the Sun and 41.1 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 495 seconds.
The 1-sigma cross-track error in the shadow position is 3573 km.
The sky-plane scale is 29823.4 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=154.9 km assuming a 5% albedo -- 6.5 sec chord
Diameter=63.2 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 02WL21, (2018/12/08 12:51UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:28.3 +27:58:44  1.1 16.73 156
Alhena         06:38:48.3 +16:22:54  1.9  8.20 170
PPM 096264     06:38:36.9 +24:34:25  6.5  1.18 171
PPM 096094     06:32:00.5 +24:22:11  9.4  0.34 173
PPM 096139     06:34:10.7 +24:16:28 10.7  0.27 172
02WL21         06:33:26.0 +24:29:08 16.6       172
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 1.8 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=1.0 and success probability=5.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 12:48:38 -26.8 Dark Down 42.7 257.3 Up 12:33:38 - 13:03:38 -4999
Penticton 12:48:37 -26.9 Dark Down 42.9 257.4 Up 12:33:37 - 13:03:37 -5033
Okanagan Falls 12:48:37 -26.9 Dark Down 43.0 257.6 Up 12:33:37 - 13:03:37 -5050
Southern Okanagan 12:48:36 -26.9 Dark Down 43.0 257.7 Up 12:33:36 - 13:03:36 -5063
Oroville 12:48:35 -26.8 Dark Down 43.0 258.1 Up 12:33:35 - 13:03:35 -5080
Tonasket 12:48:34 -26.8 Dark Down 43.0 258.3 Up 12:33:34 - 13:03:34 -5099
Okanogan 12:48:33 -26.9 Dark Down 43.2 258.5 Up 12:33:33 - 13:03:33 -5132
Brewster 12:48:33 -27.0 Dark Down 43.4 258.5 Up 12:33:33 - 13:03:33 -5160
Manson/Chelan 12:48:33 -27.2 Dark Down 43.7 258.4 Up 12:33:33 - 13:03:33 -5188
Entiat 12:48:33 -27.2 Dark Down 43.8 258.5 Up 12:33:33 - 13:03:33 -5208
Wenatchee 12:48:32 -27.3 Dark Down 43.9 258.7 Up 12:33:32 - 13:03:32 -5233
Ellensburg 12:48:31 -27.4 Dark Down 44.1 258.9 Up 12:33:31 - 13:03:31 -5274
Pasco 12:48:26 -26.4 Dark Down 43.3 260.8 Up 12:33:26 - 13:03:26 -5298
Yakima 12:48:30 -27.4 Dark Down 44.2 259.3 Up 12:33:30 - 13:03:30 -5310
PNWRO 12:48:25 -26.2 Dark Down 43.2 261.2 Up 12:33:25 - 13:03:25 -5313
Toppenish/White Swan 12:48:30 -27.2 Dark Down 44.1 259.6 Up 12:33:30 - 13:03:30 -5323
George/Umatilla 12:48:25 -26.5 Dark Down 43.5 260.9 Up 12:33:25 - 13:03:25 -5333
Niwot 12:47:45 -15.3 AT Down 33.4 275.4 Up 12:32:45 - 13:02:45 -5381
Goldendale 12:48:29 -27.5 Dark Down 44.5 259.8 Up 12:33:29 - 13:03:29 -5383
The Dalles 12:48:29 -27.7 Dark Down 44.8 259.7 Up 12:33:29 - 13:03:29 -5413
Maupin 12:48:27 -27.6 Dark Down 44.8 260.2 Up 12:33:27 - 13:03:27 -5447
Madras/Culver 12:48:25 -27.6 Dark Down 44.9 260.7 Up 12:33:25 - 13:03:25 -5497
Redmond 12:48:25 -27.6 Dark Down 45.0 261.0 Up 12:33:25 - 13:03:25 -5530
Sisters 12:48:26 -27.9 Dark Down 45.3 260.7 Up 12:33:26 - 13:03:26 -5539
Bend 12:48:25 -27.7 Dark Down 45.2 261.1 Up 12:33:25 - 13:03:25 -5553
Oregon Observatory 12:48:24 -27.8 Dark Down 45.3 261.2 Up 12:33:24 - 13:03:24 -5572
La Pine/Gilchrist 12:48:24 -27.8 Dark Down 45.4 261.3 Up 12:33:24 - 13:03:24 -5592
North Lake 12:48:22 -27.3 Dark Down 45.0 262.2 Up 12:33:22 - 13:03:22 -5613
Paisley 12:48:19 -27.0 Dark Down 44.8 263.0 Up 12:33:19 - 13:03:19 -5652
Lakeview 12:48:17 -26.8 Dark Down 44.7 263.7 Up 12:33:17 - 13:03:17 -5692
Chiloquin 12:48:22 -27.9 Dark Down 45.8 262.1 Up 12:33:22 - 13:03:22 -5703
Klamath Falls 12:48:21 -27.8 Dark Down 45.8 262.6 Up 12:33:21 - 13:03:21 -5731
Cedarville 12:48:16 -26.6 Dark Down 44.7 264.5 Up 12:33:16 - 13:03:16 -5746
Tulelake 12:48:19 -27.6 Dark Down 45.6 263.1 Up 12:33:19 - 13:03:19 -5747
Fall River/Burney 12:48:17 -27.4 Dark Down 45.6 264.0 Up 12:33:17 - 13:03:17 -5828
Susanville 12:48:14 -26.8 Dark Down 45.1 265.2 Up 12:33:14 - 13:03:14 -5863
Gimple 12:48:14 -26.9 Dark Down 45.3 265.3 Up 12:33:14 - 13:03:14 -5895
Greenville 12:48:14 -27.0 Dark Down 45.4 265.3 Up 12:33:14 - 13:03:14 -5897
Portola 12:48:12 -26.6 Dark Down 45.1 265.9 Up 12:33:12 - 13:03:12 -5913
Quincy 12:48:13 -27.0 Dark Down 45.4 265.5 Up 12:33:13 - 13:03:13 -5916
Reno 12:48:09 -26.0 Dark Down 44.6 266.6 Up 12:33:09 - 13:03:09 -5917
Yerington 12:48:06 -25.5 Dark Down 44.1 267.6 Up 12:33:06 - 13:03:06 -5947
Carson City 12:48:08 -26.0 Dark Down 44.6 267.0 Up 12:33:08 - 13:03:08 -5949
Tonopah 12:48:00 -23.8 Dark Down 42.6 269.7 Up 12:33:00 - 13:03:00 -5970
Gardnerville 12:48:08 -25.9 Dark Down 44.6 267.3 Up 12:33:08 - 13:03:08 -5970
Hawthorne 12:48:04 -25.0 Dark Down 43.7 268.4 Up 12:33:04 - 13:03:04 -5973
Lee Vining 12:48:04 -25.3 Dark Down 44.1 268.6 Up 12:33:04 - 13:03:04 -6041
Indian Springs 12:47:53 -22.3 Dark Down 41.4 272.0 Up 12:32:53 - 13:02:53 -6056
Beatty 12:47:56 -23.2 Dark Down 42.3 271.0 Up 12:32:56 - 13:02:56 -6062
Bishop 12:48:01 -24.6 Dark Down 43.6 269.6 Up 12:33:01 - 13:03:01 -6073
Henderson 12:47:50 -21.7 Dark Down 40.8 272.8 Up 12:32:50 - 13:02:50 -6082
Patrick 12:47:47 -20.7 Dark Down 39.9 273.9 Up 12:32:47 - 13:02:47 -6102
DCO 12:47:44 -20.0 Dark Down 39.3 274.6 Up 12:32:44 - 13:02:44 -6105
Kingman/Dolan Springs 12:47:46 -20.8 Dark Down 40.0 274.0 Up 12:32:46 - 13:02:46 -6129
Searchlight/Boulder City 12:47:50 -21.5 Dark Down 40.8 273.3 Up 12:32:50 - 13:02:50 -6133
Lone Pine 12:47:58 -24.2 Dark Down 43.3 270.6 Up 12:32:58 - 13:02:58 -6134
Laughlin/Bullhead City 12:47:48 -21.2 Dark Down 40.5 273.8 Up 12:32:48 - 13:02:48 -6149
Mohave Valley 12:47:46 -21.1 Dark Down 40.4 274.0 Up 12:32:46 - 13:02:46 -6174
Lake Havasu City 12:47:45 -20.8 Dark Down 40.2 274.5 Up 12:32:45 - 13:02:45 -6203
Parker 12:47:44 -20.7 Dark Down 40.2 274.8 Up 12:32:44 - 13:02:44 -6235
Blythe 12:47:44 -20.8 Dark Down 40.4 275.1 Up 12:32:44 - 13:02:44 -6295
CPSLO 12:48:01 -26.0 Dark Down 45.4 270.3 Up 12:33:01 - 13:03:01 -6343
Idyllwild 12:47:48 -22.6 Dark Down 42.1 273.9 Up 12:32:48 - 13:02:48 -6359
Calipatria 12:47:45 -21.5 Dark Down 41.1 275.0 Up 12:32:45 - 13:02:45 -6375
Yuma 12:47:42 -20.6 Dark Down 40.3 275.8 Up 12:32:42 - 13:02:42 -6384
Wildwood 12:47:53 -24.1 Dark Down 43.7 272.6 Up 12:32:53 - 13:02:53 -6390

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, (2018/12/08 12:51UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:18.1 +28:01:33  1.1 16.73 156
Alhena         06:37:42.8 +16:23:57  1.9  8.20 170
PPM 096264     06:37:27.2 +24:35:27  6.5  1.18 171
PPM 096094     06:30:50.9 +24:23:03  9.4  0.34 173
PPM 096139     06:33:01.2 +24:17:23 10.7  0.27 172
02WL21         06:32:16.4 +24:30:02 16.6       172
Positions are for J2000

Event circumstances last updated at 2018/10/08 19:33:50 UT

Marc W. Buie, Southwest Research Institute

RECON