RECON: TNO occultation with 530930

Event between (530930) 11WG157 and star GA1340:02283027 with event index number of 1660359

Geocentric closest approach at 2027/01/11 09:42:43 UTC

J2000 position of star is 04:39:12.3 +45:07:32
Equinox of date position of star is 04:40:38.0 +45:09:47
Stellar brightness G=14.9, use SENSEUP=128
Star is 104 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 30.6 AU from the Sun and 29.8 AU from the Earth.
The TNO is moving 20.3 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 382 seconds.
The 1-sigma cross-track error in the shadow position is 4366 km.
The sky-plane scale is 21633.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=218.8 km assuming a 5% albedo -- 10.8 sec chord
Diameter=89.3 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 1:1
 
 
 
 
 
 

Star training set for 530930, (2027/01/11 09:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:28.5 +16:33:42  0.8 28.63 100
3Iot Aur       04:58:45.5 +33:12:23  2.7 12.44 107
59 Per         04:44:49.7 +43:24:50  5.2  1.88 104
PPM 047235     04:39:44.9 +44:44:56  8.0  0.50 103
PPM 047257     04:41:48.5 +45:00:24  9.6  0.21 104
530930         04:41:09.5 +45:10:36 14.9       104
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 2.4 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=10.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 09:39:09 -56.1 Dark Down 46.5 290.0 Up 09:24:09 - 09:54:09 36
Kelowna 09:39:08 -56.5 Dark Down 46.5 290.3 Up 09:24:08 - 09:54:08 -9
Summerland 09:39:08 -56.7 Dark Down 46.5 290.5 Up 09:24:08 - 09:54:08 -41
Penticton 09:39:08 -56.7 Dark Down 46.4 290.6 Up 09:24:08 - 09:54:08 -45
Oliver 09:39:08 -57.0 Dark Down 46.3 290.9 Up 09:24:08 - 09:54:08 -81
Anarchist Mountain Observatory 09:39:07 -57.0 Dark Down 46.1 291.2 Up 09:24:07 - 09:54:07 -93
Tonasket 09:39:06 -57.3 Dark Down 46.1 291.5 Up 09:24:06 - 09:54:06 -127
Okanogan 09:39:06 -57.6 Dark Down 46.0 291.7 Up 09:24:06 - 09:54:06 -166
Brewster 09:39:07 -57.9 Dark Down 46.1 291.9 Up 09:24:07 - 09:54:07 -200
Manson/Chelan 09:39:07 -58.2 Dark Down 46.2 291.9 Up 09:24:07 - 09:54:07 -231
Victoria 09:39:16 -59.1 Dark Down 48.4 289.7 Up 09:24:16 - 09:54:16 -251
Entiat 09:39:07 -58.4 Dark Down 46.2 292.1 Up 09:24:07 - 09:54:07 -256
Wenatchee 09:39:07 -58.6 Dark Down 46.1 292.3 Up 09:24:07 - 09:54:07 -285
Ellensburg 09:39:07 -59.1 Dark Down 46.1 292.6 Up 09:24:07 - 09:54:07 -334
Pasco 09:39:02 -58.9 Dark Down 44.9 293.9 Up 09:24:02 - 09:54:02 -369
Yakima 09:39:06 -59.4 Dark Down 46.0 293.0 Up 09:24:06 - 09:54:06 -376
PNWRO 09:39:01 -59.0 Dark Down 44.7 294.2 Up 09:24:01 - 09:54:01 -388
Toppenish/White Swan 09:39:05 -59.4 Dark Down 45.8 293.2 Up 09:24:05 - 09:54:05 -394
Niwot 09:38:21 -53.4 Dark Down 33.2 303.8 Up 09:23:21 - 09:53:21 -447
SwRI 09:38:21 -53.5 Dark Down 33.2 303.8 Up 09:23:21 - 09:53:21 -461
Goldendale 09:39:06 -60.0 Dark Down 45.8 293.6 Up 09:24:06 - 09:54:06 -463
The Dalles 09:39:07 -60.4 Dark Down 46.0 293.6 Up 09:24:07 - 09:54:07 -497
Maupin 09:39:05 -60.6 Dark Down 45.7 294.1 Up 09:24:05 - 09:54:05 -537
Redmond 09:39:05 -61.3 Dark Down 45.4 294.9 Up 09:24:05 - 09:54:05 -633
Sisters 09:39:05 -61.5 Dark Down 45.7 294.7 Up 09:24:05 - 09:54:05 -643
Bend 09:39:05 -61.5 Dark Down 45.4 295.0 Up 09:24:05 - 09:54:05 -660
Oregon Observatory 09:39:05 -61.7 Dark Down 45.4 295.1 Up 09:24:05 - 09:54:05 -681
La Pine/Gilchrist 09:39:05 -61.9 Dark Down 45.4 295.3 Up 09:24:05 - 09:54:05 -704
North Lake 09:39:03 -61.9 Dark Down 44.8 295.9 Up 09:24:03 - 09:54:03 -732
Paisley 09:39:01 -62.1 Dark Down 44.3 296.5 Up 09:24:01 - 09:54:01 -778
Lakeview 09:39:00 -62.3 Dark Down 44.0 297.0 Up 09:24:00 - 09:54:00 -824
Klamath Falls 09:39:04 -63.0 Dark Down 44.9 296.5 Up 09:24:04 - 09:54:04 -863
Cedarville 09:38:59 -62.6 Dark Down 43.6 297.6 Up 09:23:59 - 09:53:59 -886
Fall River/Burney 09:39:02 -63.6 Dark Down 44.2 297.7 Up 09:24:02 - 09:54:02 -973
Susanville 09:38:59 -63.6 Dark Down 43.4 298.4 Up 09:23:59 - 09:53:59 -1015
Gimple 09:38:59 -63.9 Dark Down 43.4 298.6 Up 09:23:59 - 09:53:59 -1050
Greenville 09:38:59 -63.9 Dark Down 43.4 298.6 Up 09:23:59 - 09:53:59 -1052
Portola 09:38:58 -63.8 Dark Down 43.0 299.0 Up 09:23:58 - 09:53:58 -1071
Quincy 09:38:59 -64.1 Dark Down 43.3 298.7 Up 09:23:59 - 09:53:59 -1073
Reno 09:38:56 -63.6 Dark Down 42.4 299.4 Up 09:23:56 - 09:53:56 -1077
Yerington 09:38:53 -63.5 Dark Down 41.7 300.0 Up 09:23:53 - 09:53:53 -1112
Carson City 09:38:56 -63.8 Dark Down 42.2 299.7 Up 09:23:56 - 09:53:56 -1113
Gardnerville 09:38:55 -63.9 Dark Down 42.1 299.9 Up 09:23:55 - 09:53:55 -1136
Tonopah 09:38:47 -62.7 Dark Down 39.9 301.2 Up 09:23:47 - 09:53:47 -1139
Hawthorne 09:38:51 -63.4 Dark Down 41.1 300.5 Up 09:23:51 - 09:53:51 -1141
Lee Vining 09:38:53 -64.0 Dark Down 41.1 300.8 Up 09:23:53 - 09:53:53 -1215
Indian Springs 09:38:42 -62.3 Dark Down 38.1 302.6 Up 09:23:42 - 09:53:42 -1230
Beatty 09:38:46 -62.9 Dark Down 39.0 302.2 Up 09:23:46 - 09:53:46 -1238
Bishop 09:38:50 -63.9 Dark Down 40.4 301.4 Up 09:23:50 - 09:53:50 -1250
Henderson 09:38:40 -62.0 Dark Down 37.4 303.2 Up 09:23:40 - 09:53:40 -1256
Patrick 09:38:36 -61.4 Dark Down 36.3 303.8 Up 09:23:36 - 09:53:36 -1273
DCO 09:38:34 -61.0 Dark Down 35.6 304.2 Up 09:23:34 - 09:53:34 -1274
Kingman/Dolan Springs 09:38:36 -61.6 Dark Down 36.3 303.9 Up 09:23:36 - 09:53:36 -1303
Searchlight/Boulder City 09:38:39 -62.2 Dark Down 37.0 303.5 Up 09:23:39 - 09:53:39 -1310
Laughlin/Bullhead City 09:38:38 -62.0 Dark Down 36.6 303.8 Up 09:23:38 - 09:53:38 -1325
Mohave Valley 09:38:37 -62.1 Dark Down 36.5 304.0 Up 09:23:37 - 09:53:37 -1352
George/Scottsdale 09:38:29 -60.4 Dark Down 34.0 305.3 Up 09:23:29 - 09:53:29 -1353
Lake Havasu City 09:38:37 -62.1 Dark Down 36.1 304.3 Up 09:23:37 - 09:53:37 -1381
Parker 09:38:36 -62.2 Dark Down 35.8 304.5 Up 09:23:36 - 09:53:36 -1414
Blythe 09:38:37 -62.6 Dark Down 35.7 304.7 Up 09:23:37 - 09:53:37 -1477
CPSLO 09:38:56 -66.4 Dark Down 40.8 302.4 Up 09:23:56 - 09:53:56 -1535
Idyllwild 09:38:42 -64.2 Dark Down 37.3 304.2 Up 09:23:42 - 09:53:42 -1550
Calipatria 09:38:39 -63.5 Dark Down 36.1 304.8 Up 09:23:39 - 09:53:39 -1563
Yuma 09:38:36 -62.9 Dark Down 35.2 305.3 Up 09:23:36 - 09:53:36 -1569
Wildwood 09:38:48 -65.5 Dark Down 38.7 303.6 Up 09:23:48 - 09:53:48 -1584

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 530930, (2027/01/11 09:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.63 100
3Iot Aur       04:56:59.6 +33:09:58  2.7 12.44 107
59 Per         04:42:54.3 +43:21:54  5.2  1.88 104
PPM 047235     04:37:48.2 +44:41:48  8.0  0.50 103
PPM 047257     04:39:51.4 +44:57:20  9.6  0.21 104
530930         04:39:12.3 +45:07:32 14.9       104
Positions are for J2000

Event circumstances last updated at 2019/10/04 23:04:19 UT

Marc W. Buie, Southwest Research Institute

RECON