RECON: TNO occultation with 08SO266

Event between 08SO266 and star UC4-441-003358 with event index number of 152760

Geocentric closest approach at 2018/10/04 11:53:07 UTC

J2000 position of star is 02:34:40.2 -01:56:04
Equinox of date position of star is 02:35:31.8 -01:51:39
Stellar brightness R=16.4
Star is 93 degrees from the moon. Moon is 27% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 33.6 AU from the Sun and 32.7 AU from the Earth.
The TNO is moving 22.4 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 232 seconds.
The 1-sigma cross-track error in the shadow position is 2705 km.
The sky-plane scale is 23744.7 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=326.6 km assuming a 5% albedo -- 14.6 sec chord
Diameter=133.3 km assuming a 30% albedo -- 6.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 08SO266, (2018/10/04 11:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:36:59.9 +16:32:44  0.8 35.15  59
68Omi Cet      02:20:17.7 -02:53:36  2.0  3.97  97
75 Cet         02:33:06.8 -00:57:11  6.0  1.10  93
PPM 175123     02:31:29.4 -01:35:21  8.2  1.07  94
PPM 175145     02:36:46.8 -01:45:00  9.3  0.31  93
08SO266        02:35:37.4 -01:51:10 16.4        93
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 3.9 sigma about the mid-time.
The median site spacing is 21.2 km RECON observability=1.0 and success probability=16.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 11:49:51 -22.2 Dark Up 31.9 219.2 Up 11:34:51 - 12:04:51 30
Tonasket 11:49:51 -22.2 Dark Up 32.1 219.3 Up 11:34:51 - 12:04:51 12
Okanogan 11:49:51 -22.4 Dark Up 32.4 219.3 Up 11:34:51 - 12:04:51 -16
Brewster 11:49:52 -22.7 Dark Up 32.7 219.2 Up 11:34:52 - 12:04:52 -31
Manson/Chelan 11:49:53 -23.0 Dark Up 33.0 218.9 Up 11:34:53 - 12:04:53 -37
Entiat 11:49:53 -23.1 Dark Up 33.2 218.9 Up 11:34:53 - 12:04:53 -54
Wenatchee 11:49:53 -23.2 Dark Up 33.5 218.9 Up 11:34:53 - 12:04:53 -71
Ellensburg 11:49:54 -23.5 Dark Up 33.9 218.8 Up 11:34:54 - 12:04:54 -99
Yakima 11:49:54 -23.7 Dark Up 34.2 219.0 Up 11:34:54 - 12:04:54 -133
Toppenish/White Swan 11:49:53 -23.6 Dark Up 34.3 219.2 Up 11:34:53 - 12:04:53 -157
Goldendale 11:49:54 -24.1 Dark Up 34.9 219.0 Up 11:34:54 - 12:04:54 -190
The Dalles 11:49:55 -24.4 Dark Up 35.2 218.7 Up 11:34:55 - 12:04:55 -197
Pasco 11:49:50 -22.9 Dark Up 33.8 220.7 Up 11:34:50 - 12:04:50 -210
George/Umatilla 11:49:51 -23.1 Dark Up 34.2 220.6 Up 11:34:51 - 12:04:51 -232
Maupin 11:49:55 -24.5 Dark Up 35.5 219.0 Up 11:34:55 - 12:04:55 -237
PNWRO 11:49:49 -22.8 Dark Up 33.9 221.0 Up 11:34:49 - 12:04:49 -239
Madras/Culver 11:49:55 -24.7 Dark Up 36.0 219.2 Up 11:34:55 - 12:04:55 -282
Sisters 11:49:56 -25.1 Dark Up 36.4 218.9 Up 11:34:56 - 12:04:56 -295
Redmond 11:49:55 -24.8 Dark Up 36.3 219.3 Up 11:34:55 - 12:04:55 -311
Bend 11:49:56 -25.0 Dark Up 36.5 219.3 Up 11:34:56 - 12:04:56 -325
Oregon Observatory 11:49:56 -25.2 Dark Up 36.7 219.2 Up 11:34:56 - 12:04:56 -335
La Pine/Gilchrist 11:49:56 -25.3 Dark Up 36.9 219.3 Up 11:34:56 - 12:04:56 -351
North Lake 11:49:55 -25.0 Dark Up 36.9 220.1 Up 11:34:55 - 12:04:55 -411
Chiloquin 11:49:58 -25.9 Dark Up 37.9 219.4 Up 11:34:58 - 12:04:58 -436
Klamath Falls 11:49:58 -25.9 Dark Up 38.1 219.7 Up 11:34:58 - 12:04:58 -469
Paisley 11:49:54 -24.9 Dark Up 37.2 220.8 Up 11:34:54 - 12:04:54 -472
Tulelake 11:49:57 -25.8 Dark Up 38.2 220.1 Up 11:34:57 - 12:04:57 -504
Lakeview 11:49:54 -24.9 Dark Up 37.5 221.3 Up 11:34:54 - 12:04:54 -524
Fall River/Burney 11:49:57 -26.0 Dark Up 38.8 220.7 Up 11:34:57 - 12:04:57 -588
Cedarville 11:49:53 -25.0 Dark Up 37.9 221.8 Up 11:34:53 - 12:04:53 -589
Susanville 11:49:55 -25.7 Dark Up 38.9 221.8 Up 11:34:55 - 12:04:55 -672
Greenville 11:49:56 -26.0 Dark Up 39.3 221.7 Up 11:34:56 - 12:04:56 -686
Gimple 11:49:56 -25.9 Dark Up 39.2 221.8 Up 11:34:56 - 12:04:56 -689
Quincy 11:49:56 -26.1 Dark Up 39.4 221.8 Up 11:34:56 - 12:04:56 -704
Portola 11:49:54 -25.7 Dark Up 39.3 222.4 Up 11:34:54 - 12:04:54 -733
Reno 11:49:53 -25.3 Dark Up 39.1 223.2 Up 11:34:53 - 12:04:53 -782
Carson City 11:49:53 -25.4 Dark Up 39.4 223.5 Up 11:34:53 - 12:04:53 -815
Gardnerville 11:49:53 -25.5 Dark Up 39.5 223.7 Up 11:34:53 - 12:04:53 -840
Yerington 11:49:51 -25.0 Dark Up 39.2 224.3 Up 11:34:51 - 12:04:51 -857
Hawthorne 11:49:50 -24.7 Dark Up 39.2 225.1 Up 11:34:50 - 12:04:50 -920
Lee Vining 11:49:51 -25.3 Dark Up 39.9 224.9 Up 11:34:51 - 12:04:51 -953
Tonopah 11:49:46 -23.8 Dark Up 38.8 226.8 Up 11:34:46 - 12:04:46 -1015
Bishop 11:49:50 -24.9 Dark Up 39.9 226.0 Up 11:34:50 - 12:04:50 -1037
Lone Pine 11:49:49 -24.8 Dark Up 40.3 226.8 Up 11:34:49 - 12:04:49 -1121
Beatty 11:49:45 -23.7 Dark Up 39.3 228.0 Up 11:34:45 - 12:04:45 -1142
CPSLO 11:49:58 -27.1 Dark Up 42.7 224.9 Up 11:34:58 - 12:04:58 -1142
Indian Springs 11:49:43 -22.9 Dark Up 38.9 229.3 Up 11:34:43 - 12:04:43 -1213
Niwot 11:49:16 -14.3 AT Up 30.2 237.2 Up 11:34:16 - 12:04:16 -1226
Henderson 11:49:41 -22.5 Dark Up 38.8 230.3 Up 11:34:41 - 12:04:41 -1290
Wildwood 11:49:52 -25.8 Dark Up 42.3 227.9 Up 11:34:52 - 12:04:52 -1338
Searchlight/Boulder City 11:49:41 -22.6 Dark Up 39.1 230.8 Up 11:34:41 - 12:04:41 -1347
Laughlin/Bullhead City 11:49:40 -22.4 Dark Up 39.1 231.3 Up 11:34:40 - 12:04:40 -1389
Patrick 11:49:38 -21.7 Dark Up 38.5 231.8 Up 11:34:38 - 12:04:38 -1391
Kingman/Dolan Springs 11:49:39 -21.9 Dark Up 38.7 231.8 Up 11:34:39 - 12:04:39 -1406
Mohave Valley 11:49:40 -22.4 Dark Up 39.3 231.5 Up 11:34:40 - 12:04:40 -1416
Idyllwild 11:49:47 -24.3 Dark Up 41.3 230.1 Up 11:34:47 - 12:04:47 -1446
DCO 11:49:36 -21.2 Dark Up 38.2 232.7 Up 11:34:36 - 12:04:36 -1447
Lake Havasu City 11:49:40 -22.3 Dark Up 39.3 232.0 Up 11:34:40 - 12:04:40 -1464
Parker 11:49:40 -22.3 Dark Up 39.5 232.2 Up 11:34:40 - 12:04:40 -1499
Blythe 11:49:41 -22.6 Dark Up 40.1 232.3 Up 11:34:41 - 12:04:41 -1539
Calipatria 11:49:44 -23.5 Dark Up 41.0 231.7 Up 11:34:44 - 12:04:44 -1551
Yuma 11:49:41 -22.8 Dark Up 40.6 232.9 Up 11:34:41 - 12:04:41 -1627

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 08SO266, (2018/10/04 11:53UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 35.15  59
68Omi Cet      02:19:20.8 -02:58:44  2.0  3.97  97
75 Cet         02:32:09.4 -01:02:07  6.0  1.10  93
PPM 175123     02:30:32.2 -01:40:18  8.2  1.07  94
PPM 175145     02:35:49.6 -01:49:52  9.3  0.31  93
08SO266        02:34:40.2 -01:56:04 16.4        93
Positions are for J2000

Event circumstances last updated at 2016/12/02 19:16:17 UT

Marc W. Buie, Southwest Research Institute

RECON