RECON: TNO occultation with 91205

Event between (91205) 98US43 and star GA1060:01189278 with event index number of 1026256

Geocentric closest approach at 2020/12/14 11:28:35 UTC

J2000 position of star is 05:42:40.2 +16:03:38
Equinox of date position of star is 05:43:46.0 +16:04:06
Stellar brightness G=14.0, use SENSEUP=64
Star is 171 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.7

[RECON map]
TNO is 37.8 AU from the Sun and 36.9 AU from the Earth.
The TNO is moving 25.4 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 460 seconds.
The 1-sigma cross-track error in the shadow position is 2102 km.
The sky-plane scale is 26733.4 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 6.0 sec chord
Diameter=61.8 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 91205, (2020/12/14 11:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:18.4 +07:24:33  0.4  9.18 162
Bellatrix      05:26:15.4 +06:22:01  1.6 10.62 163
126 Tau        05:42:30.4 +16:32:35  4.6  0.58 171
PPM 121346     05:46:05.7 +16:05:36  7.1  0.53 170
PPM 121300     05:43:45.7 +15:47:48  9.4  0.27 171
91205          05:43:52.7 +16:04:09 14.0       171
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 2.0 sigma about the mid-time.
The median site spacing is 20.7 km RECON observability=1.0 and success probability=7.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:26:22 -40.8 Dark Down 37.5 248.3 Up 11:11:22 - 11:41:22 5003
Summerland 11:26:22 -41.1 Dark Down 37.7 248.0 Up 11:11:22 - 11:41:22 4995
Penticton 11:26:21 -41.0 Dark Down 37.7 248.4 Up 11:11:21 - 11:41:21 4969
Okanagan Falls 11:26:21 -41.1 Dark Down 37.8 248.5 Up 11:11:21 - 11:41:21 4952
Oliver 11:26:20 -41.1 Dark Down 37.8 248.7 Up 11:11:20 - 11:41:20 4938
Anarchist Mountain Observatory 11:26:19 -41.0 Dark Down 37.8 249.0 Up 11:11:19 - 11:41:19 4925
Oroville 11:26:20 -41.1 Dark Down 37.9 249.0 Up 11:11:20 - 11:41:20 4917
Tonasket 11:26:19 -41.1 Dark Down 37.9 249.1 Up 11:11:19 - 11:41:19 4897
Okanogan 11:26:18 -41.3 Dark Down 38.2 249.2 Up 11:11:18 - 11:41:18 4865
Brewster 11:26:18 -41.5 Dark Down 38.4 249.3 Up 11:11:18 - 11:41:18 4838
Manson/Chelan 11:26:19 -41.8 Dark Down 38.7 249.1 Up 11:11:19 - 11:41:19 4814
Entiat 11:26:18 -41.9 Dark Down 38.8 249.2 Up 11:11:18 - 11:41:18 4793
Wenatchee 11:26:18 -42.0 Dark Down 39.0 249.3 Up 11:11:18 - 11:41:18 4769
Ellensburg 11:26:17 -42.2 Dark Down 39.3 249.4 Up 11:11:17 - 11:41:17 4729
Yakima 11:26:16 -42.3 Dark Down 39.4 249.7 Up 11:11:16 - 11:41:16 4691
Pasco 11:26:13 -41.4 Dark Down 38.6 251.2 Up 11:11:13 - 11:41:13 4679
Toppenish/White Swan 11:26:15 -42.2 Dark Down 39.4 250.0 Up 11:11:15 - 11:41:15 4673
PNWRO 11:26:12 -41.3 Dark Down 38.5 251.6 Up 11:11:12 - 11:41:12 4659
George/Umatilla 11:26:12 -41.6 Dark Down 38.8 251.3 Up 11:11:12 - 11:41:12 4645
Goldendale 11:26:15 -42.6 Dark Down 39.8 250.0 Up 11:11:15 - 11:41:15 4617
The Dalles 11:26:16 -42.9 Dark Down 40.2 249.9 Up 11:11:16 - 11:41:16 4591
Maupin 11:26:14 -42.9 Dark Down 40.2 250.3 Up 11:11:14 - 11:41:14 4554
Madras/Culver 11:26:14 -43.0 Dark Down 40.4 250.7 Up 11:11:14 - 11:41:14 4502
Redmond 11:26:13 -43.1 Dark Down 40.6 250.9 Up 11:11:13 - 11:41:13 4468
Sisters 11:26:14 -43.4 Dark Down 40.9 250.6 Up 11:11:14 - 11:41:14 4465
Bend 11:26:13 -43.3 Dark Down 40.8 251.0 Up 11:11:13 - 11:41:13 4445
Oregon Observatory 11:26:13 -43.4 Dark Down 40.9 251.0 Up 11:11:13 - 11:41:13 4427
La Pine/Gilchrist 11:26:13 -43.4 Dark Down 41.0 251.1 Up 11:11:13 - 11:41:13 4407
North Lake 11:26:10 -43.1 Dark Down 40.7 252.0 Up 11:11:10 - 11:41:10 4374
Niwot 11:25:34 -31.5 Dark Down 29.9 266.1 Low 11:10:34 - 11:40:34 4329
Paisley 11:26:08 -42.9 Dark Down 40.7 252.8 Up 11:11:08 - 11:41:08 4326
Chiloquin 11:26:11 -43.9 Dark Down 41.6 251.7 Up 11:11:11 - 11:41:11 4296
Lakeview 11:26:07 -42.8 Dark Down 40.7 253.3 Up 11:11:07 - 11:41:07 4280
Klamath Falls 11:26:10 -43.9 Dark Down 41.7 252.1 Up 11:11:10 - 11:41:10 4264
Tulelake 11:26:09 -43.7 Dark Down 41.6 252.6 Up 11:11:09 - 11:41:09 4242
Cedarville 11:26:05 -42.8 Dark Down 40.8 254.0 Up 11:11:05 - 11:41:05 4219
Fall River/Burney 11:26:07 -43.7 Dark Down 41.8 253.4 Up 11:11:07 - 11:41:07 4155
Susanville 11:26:04 -43.2 Dark Down 41.4 254.6 Up 11:11:04 - 11:41:04 4104
Gimple 11:26:04 -43.4 Dark Down 41.6 254.6 Up 11:11:04 - 11:41:04 4074
Greenville 11:26:04 -43.5 Dark Down 41.7 254.5 Up 11:11:04 - 11:41:04 4073
Quincy 11:26:04 -43.5 Dark Down 41.7 254.7 Up 11:11:04 - 11:41:04 4053
Portola 11:26:03 -43.2 Dark Down 41.4 255.2 Up 11:11:03 - 11:41:03 4047
Reno 11:26:01 -42.7 Dark Down 41.0 256.0 Up 11:11:01 - 11:41:01 4031
Carson City 11:26:00 -42.7 Dark Down 41.1 256.3 Up 11:11:00 - 11:41:00 3996
Yerington 11:25:58 -42.2 Dark Down 40.7 256.9 Up 11:10:58 - 11:40:58 3986
Gardnerville 11:25:59 -42.7 Dark Down 41.1 256.5 Up 11:10:59 - 11:40:59 3972
Hawthorne 11:25:56 -41.8 Dark Down 40.4 257.7 Up 11:10:56 - 11:40:56 3948
Tonopah 11:25:53 -40.7 Dark Down 39.4 259.2 Up 11:10:53 - 11:40:53 3923
Lee Vining 11:25:56 -42.2 Dark Down 40.9 257.8 Up 11:10:56 - 11:40:56 3884
Bishop 11:25:53 -41.7 Dark Down 40.4 258.9 Up 11:10:53 - 11:40:53 3836
Beatty 11:25:49 -40.4 Dark Down 39.2 260.4 Up 11:10:49 - 11:40:49 3815
Indian Springs 11:25:46 -39.5 Dark Down 38.4 261.4 Up 11:10:46 - 11:40:46 3800
Lone Pine 11:25:52 -41.4 Dark Down 40.3 259.7 Up 11:10:52 - 11:40:52 3765
Henderson 11:25:44 -39.0 Dark Down 38.0 262.3 Up 11:10:44 - 11:40:44 3758
Patrick 11:25:40 -38.0 Dark Down 37.2 263.5 Up 11:10:40 - 11:40:40 3714
Searchlight/Boulder City 11:25:43 -38.9 Dark Down 38.0 262.8 Up 11:10:43 - 11:40:43 3702
DCO 11:25:39 -37.4 Dark Down 36.6 264.2 Up 11:10:39 - 11:40:39 3696
Kingman/Dolan Springs 11:25:40 -38.2 Dark Down 37.3 263.6 Up 11:10:40 - 11:40:40 3689
Laughlin/Bullhead City 11:25:42 -38.6 Dark Down 37.8 263.2 Up 11:10:42 - 11:40:42 3678
Mohave Valley 11:25:41 -38.6 Dark Down 37.8 263.5 Up 11:10:41 - 11:40:41 3650
Lake Havasu City 11:25:39 -38.3 Dark Down 37.6 263.9 Up 11:10:39 - 11:40:39 3614
CPSLO 11:25:55 -43.5 Dark Down 42.6 259.0 Up 11:10:55 - 11:40:55 3594
Parker 11:25:39 -38.3 Dark Down 37.7 264.2 Up 11:10:39 - 11:40:39 3579
Blythe 11:25:39 -38.5 Dark Down 38.0 264.4 Up 11:10:39 - 11:40:39 3521
Wildwood 11:25:49 -41.8 Dark Down 41.2 261.5 Up 11:10:49 - 11:40:49 3502
Idyllwild 11:25:43 -40.3 Dark Down 39.7 263.0 Up 11:10:43 - 11:40:43 3496
Calipatria 11:25:40 -39.3 Dark Down 38.8 264.2 Up 11:10:40 - 11:40:40 3454
Yuma 11:25:37 -38.5 Dark Down 38.1 265.1 Up 11:10:37 - 11:40:37 3426

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 91205, (2020/12/14 11:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.18 162
Bellatrix      05:25:07.8 +06:20:58  1.6 10.62 163
126 Tau        05:41:17.7 +16:32:02  4.6  0.58 171
PPM 121346     05:44:53.2 +16:05:10  7.1  0.53 170
PPM 121300     05:42:33.4 +15:47:18  9.4  0.27 171
91205          05:42:40.2 +16:03:38 14.0       171
Positions are for J2000

Event circumstances last updated at 2019/01/01 21:44:49 UT

Marc W. Buie, Southwest Research Institute

RECON