RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star UC4-511-026156 with event index number of 355927

Geocentric closest approach at 2018/11/30 12:12:40 UTC

J2000 position of star is 06:34:50.2 +12:06:35
Equinox of date position of star is 06:35:53.3 +12:05:37
Stellar brightness R=15.3, use SENSEUP=128
Star is 67 degrees from the moon. Moon is 45% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 12.9 AU from the Sun and 12.1 AU from the Earth.
The TNO is moving 19.4 km/sec on the sky relative to the star, or, 8.0 arcsec/hr.
The 1-sigma error in the time of the event is 67 seconds.
The 1-sigma cross-track error in the shadow position is 638 km.
The sky-plane scale is 8747.9 km/arcsec.

The TNO has an absolute magnitude Hv=9.7
Diameter=69.2 km assuming a 5% albedo -- 3.6 sec chord
Diameter=28.2 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 250112, (2018/11/30 12:13UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:11.8 +07:24:33  0.4 10.84  78
Alhena         06:38:48.3 +16:22:54  1.9  4.35  66
PPM 122607     06:32:42.8 +11:46:38  6.3  0.84  68
PPM 122757     06:37:40.5 +11:50:42  7.8  0.50  67
PPM 122703     06:35:46.9 +11:59:59  8.9  0.10  67
250112         06:35:53.8 +12:05:37 15.3        67
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 5.0 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=66.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Rutland 12:10:05 -31.7 Dark Up 43.2 228.1 Up 12:03:59 - 12:16:10 945
Penticton 12:10:05 -31.9 Dark Up 43.5 228.2 Up 12:03:59 - 12:16:10 912
Okanagan Falls 12:10:05 -31.9 Dark Up 43.6 228.3 Up 12:03:59 - 12:16:10 894
Southern Okanagan 12:10:04 -31.9 Dark Up 43.7 228.4 Up 12:03:59 - 12:16:10 879
Oroville 12:10:04 -31.8 Dark Up 43.8 228.8 Up 12:03:58 - 12:16:09 855
Tonasket 12:10:03 -31.8 Dark Up 44.0 228.9 Up 12:03:58 - 12:16:09 834
Okanogan 12:10:03 -32.0 Dark Up 44.3 229.0 Up 12:03:58 - 12:16:09 803
Brewster 12:10:03 -32.1 Dark Up 44.6 229.0 Up 12:03:58 - 12:16:09 778
Manson/Chelan 12:10:05 -32.4 Dark Up 44.9 228.7 Up 12:03:59 - 12:16:10 760
Entiat 12:10:04 -32.4 Dark Up 45.1 228.8 Up 12:03:59 - 12:16:10 739
Wenatchee 12:10:04 -32.5 Dark Up 45.3 228.8 Up 12:03:59 - 12:16:10 715
Ellensburg 12:10:05 -32.7 Dark Up 45.7 228.9 Up 12:03:59 - 12:16:10 677
Yakima 12:10:04 -32.7 Dark Up 45.9 229.2 Up 12:03:59 - 12:16:10 638
Toppenish/White Swan 12:10:03 -32.6 Dark Up 46.0 229.6 Up 12:03:58 - 12:16:09 617
Pasco 12:09:59 -31.7 Dark Up 45.4 231.1 Up 12:03:53 - 12:16:04 600
PNWRO 12:09:58 -31.6 Dark Up 45.4 231.6 Up 12:03:52 - 12:16:03 575
George/Umatilla 12:09:59 -31.9 Dark Up 45.7 231.1 Up 12:03:54 - 12:16:05 568
Goldendale 12:10:04 -32.9 Dark Up 46.6 229.5 Up 12:03:59 - 12:16:10 565
The Dalles 12:10:05 -33.2 Dark Up 46.9 229.2 Up 12:04:00 - 12:16:11 545
Maupin 12:10:04 -33.1 Dark Up 47.1 229.7 Up 12:03:59 - 12:16:10 504
Madras/Culver 12:10:04 -33.2 Dark Up 47.5 230.1 Up 12:03:58 - 12:16:09 451
Sisters 12:10:05 -33.5 Dark Up 48.0 229.8 Up 12:04:00 - 12:16:11 421
Redmond 12:10:03 -33.2 Dark Up 47.8 230.3 Up 12:03:58 - 12:16:09 416
Bend 12:10:04 -33.3 Dark Up 48.0 230.4 Up 12:03:58 - 12:16:09 396
Oregon Observatory 12:10:04 -33.4 Dark Up 48.2 230.3 Up 12:03:58 - 12:16:09 380
La Pine/Gilchrist 12:10:04 -33.5 Dark Up 48.3 230.5 Up 12:03:58 - 12:16:09 360
North Lake 12:10:01 -33.0 Dark Up 48.3 231.5 Up 12:03:56 - 12:16:07 314
Paisley 12:09:59 -32.8 Dark Up 48.4 232.4 Up 12:03:54 - 12:16:05 258
Chiloquin 12:10:04 -33.7 Dark Up 49.2 231.0 Up 12:03:59 - 12:16:10 252
Klamath Falls 12:10:03 -33.7 Dark Up 49.4 231.4 Up 12:03:58 - 12:16:09 217
Lakeview 12:09:58 -32.6 Dark Up 48.6 233.1 Up 12:03:53 - 12:16:04 206
Tulelake 12:10:02 -33.5 Dark Up 49.4 232.0 Up 12:03:57 - 12:16:08 189
Cedarville 12:09:57 -32.5 Dark Up 48.9 233.9 Up 12:03:51 - 12:16:02 140
Fall River/Burney 12:10:01 -33.4 Dark Up 49.9 233.0 Up 12:03:55 - 12:16:06 97
Susanville 12:09:58 -32.8 Dark Up 49.8 234.4 Up 12:03:52 - 12:16:03 30
Greenville 12:09:59 -33.0 Dark Up 50.2 234.3 Up 12:03:53 - 12:16:04 4
Gimple 12:09:58 -33.0 Dark Up 50.1 234.4 Up 12:03:53 - 12:16:04 3
Quincy 12:09:58 -33.0 Dark Up 50.3 234.5 Up 12:03:53 - 12:16:04 -17
Niwot 12:09:05 -21.2 Dark Up 39.7 250.0 Up 12:03:00 - 12:15:11 -28
Portola 12:09:56 -32.7 Dark Up 50.1 235.2 Up 12:03:51 - 12:16:02 -32
Reno 12:09:54 -32.2 Dark Up 49.8 236.2 Up 12:03:48 - 12:15:59 -62
Carson City 12:09:53 -32.1 Dark Up 50.0 236.6 Up 12:03:48 - 12:15:59 -99
Yerington 12:09:51 -31.6 Dark Up 49.7 237.5 Up 12:03:45 - 12:15:56 -122
Gardnerville 12:09:53 -32.1 Dark Up 50.1 236.9 Up 12:03:47 - 12:15:58 -124
Hawthorne 12:09:48 -31.2 Dark Up 49.6 238.5 Up 12:03:43 - 12:15:54 -172
Tonopah 12:09:43 -30.1 Dark Up 48.9 240.5 Up 12:03:37 - 12:15:48 -225
Lee Vining 12:09:50 -31.5 Dark Up 50.2 238.6 Up 12:03:44 - 12:15:55 -228
Bishop 12:09:46 -30.9 Dark Up 50.0 240.0 Up 12:03:41 - 12:15:52 -292
Beatty 12:09:40 -29.6 Dark Up 49.1 242.2 Up 12:03:35 - 12:15:46 -347
Lone Pine 12:09:44 -30.6 Dark Up 50.2 241.1 Up 12:03:39 - 12:15:50 -373
Indian Springs 12:09:36 -28.7 Dark Up 48.5 243.6 Up 12:03:30 - 12:15:41 -384
Henderson 12:09:33 -28.1 Dark Up 48.3 244.8 Up 12:03:27 - 12:15:38 -442
CPSLO 12:09:53 -32.6 Dark Up 52.6 239.7 Up 12:03:48 - 12:15:59 -496
Searchlight/Boulder City 12:09:32 -28.0 Dark Up 48.5 245.4 Up 12:03:26 - 12:15:37 -502
Patrick 12:09:28 -27.1 Dark Up 47.7 246.5 Up 12:03:22 - 12:15:33 -510
Kingman/Dolan Springs 12:09:28 -27.3 Dark Up 47.9 246.5 Up 12:03:23 - 12:15:34 -533
Laughlin/Bullhead City 12:09:30 -27.7 Dark Up 48.3 246.1 Up 12:03:25 - 12:15:36 -534
DCO 12:09:25 -26.5 Dark Up 47.3 247.4 Up 12:03:20 - 12:15:31 -544
Mohave Valley 12:09:30 -27.6 Dark Up 48.4 246.3 Up 12:03:24 - 12:15:35 -563
Lake Havasu City 12:09:29 -27.4 Dark Up 48.4 247.0 Up 12:03:23 - 12:15:34 -606
Wildwood 12:09:44 -30.8 Dark Up 51.8 243.3 Up 12:03:39 - 12:15:50 -633
Parker 12:09:28 -27.3 Dark Up 48.5 247.4 Up 12:03:23 - 12:15:34 -643
Idyllwild 12:09:37 -29.2 Dark Up 50.5 245.6 Up 12:03:31 - 12:15:42 -679
Blythe 12:09:29 -27.5 Dark Up 49.0 247.7 Up 12:03:23 - 12:15:34 -698
Calipatria 12:09:32 -28.2 Dark Up 49.9 247.3 Up 12:03:26 - 12:15:37 -747
Yuma 12:09:28 -27.4 Dark Up 49.3 248.6 Up 12:03:23 - 12:15:34 -796

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 250112, (2018/11/30 12:13UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.84  78
Alhena         06:37:42.8 +16:23:57  1.9  4.35  66
PPM 122607     06:31:39.4 +11:47:32  6.3  0.84  68
PPM 122757     06:36:37.1 +11:51:43  7.8  0.50  67
PPM 122703     06:34:43.4 +12:00:57  8.9  0.10  67
250112         06:34:50.2 +12:06:35 15.3        67
Positions are for J2000

Event circumstances last updated at 2018/10/11 06:14:11 UT

Marc W. Buie, Southwest Research Institute

RECON