RECON: TNO occultation with 91205

Event between (91205) 98US43 and star GA1040:01122697 with event index number of 1117933

Geocentric closest approach at 2022/01/19 04:24:42 UTC

J2000 position of star is 05:46:05.6 +15:52:37
Equinox of date position of star is 05:47:12.8 +15:52:59
Stellar brightness G=14.7, use SENSEUP=128
Star is 47 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=23.8

[RECON map]
TNO is 38.0 AU from the Sun and 37.2 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 841 seconds.
The 1-sigma cross-track error in the shadow position is 3139 km.
The sky-plane scale is 26946.5 km/arcsec.

The TNO has an absolute magnitude Hv=8.0
Diameter=151.4 km assuming a 5% albedo -- 7.2 sec chord
Diameter=61.8 km assuming a 30% albedo -- 3.0 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 91205, (2022/01/19 04:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:22.0 +07:24:34  0.4  8.76  48
Bellatrix      05:26:18.9 +06:22:04  1.6 10.82  55
126 Tau        05:42:34.2 +16:32:36  4.6  1.33  48
PPM 121346     05:46:09.5 +16:05:38  7.1  0.36  48
PPM 121389     05:48:17.7 +15:51:45  8.7  0.23  47
91205          05:47:21.8 +15:53:02 14.7        47
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 1.1 sigma about the mid-time.
The median site spacing is 20.4 km RECON observability=1.0 and success probability=15.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 04:26:01 -37.4 Dark Up 52.0 146.2 Up 04:11:01 - 04:41:01 730
Summerland 04:26:03 -37.3 Dark Up 52.2 145.6 Up 04:11:03 - 04:41:03 704
Penticton 04:26:02 -37.4 Dark Up 52.3 145.7 Up 04:11:02 - 04:41:02 697
Okanagan Falls 04:26:03 -37.4 Dark Up 52.4 145.5 Up 04:11:03 - 04:41:03 680
Oliver 04:26:03 -37.5 Dark Up 52.6 145.4 Up 04:11:03 - 04:41:03 664
Anarchist Mountain Observatory 04:26:02 -37.6 Dark Up 52.8 145.6 Up 04:11:02 - 04:41:02 648
Oroville 04:26:03 -37.6 Dark Up 52.8 145.4 Up 04:11:03 - 04:41:03 641
Tonasket 04:26:03 -37.7 Dark Up 53.0 145.3 Up 04:11:03 - 04:41:03 619
Okanogan 04:26:04 -37.6 Dark Up 53.2 144.8 Up 04:11:04 - 04:41:04 588
Brewster 04:26:05 -37.6 Dark Up 53.4 144.3 Up 04:11:05 - 04:41:05 564
Manson/Chelan 04:26:07 -37.4 Dark Up 53.4 143.6 Up 04:11:07 - 04:41:07 546
Entiat 04:26:07 -37.4 Dark Up 53.5 143.3 Up 04:11:07 - 04:41:07 525
Wenatchee 04:26:08 -37.4 Dark Up 53.7 143.0 Up 04:11:08 - 04:41:08 502
Ellensburg 04:26:09 -37.3 Dark Up 53.9 142.3 Up 04:11:09 - 04:41:09 464
Yakima 04:26:09 -37.3 Dark Up 54.3 141.9 Up 04:11:09 - 04:41:09 425
Toppenish/White Swan 04:26:09 -37.5 Dark Up 54.5 142.0 Up 04:11:09 - 04:41:09 404
Pasco 04:26:05 -38.4 Dark Up 55.1 143.8 Up 04:11:05 - 04:41:05 387
PNWRO 04:26:04 -38.6 Dark Up 55.4 143.9 Up 04:11:04 - 04:41:04 362
George/Umatilla 04:26:06 -38.3 Dark Up 55.3 143.2 Up 04:11:06 - 04:41:06 355
Goldendale 04:26:11 -37.3 Dark Up 54.7 140.9 Up 04:11:11 - 04:41:11 353
The Dalles 04:26:13 -37.1 Dark Up 54.8 140.1 Up 04:11:13 - 04:41:13 333
Maupin 04:26:13 -37.2 Dark Up 55.1 139.9 Up 04:11:13 - 04:41:13 292
Madras/Culver 04:26:14 -37.3 Dark Up 55.5 139.4 Up 04:11:14 - 04:41:14 239
Sisters 04:26:16 -37.0 Dark Up 55.6 138.4 Up 04:11:16 - 04:41:16 209
Redmond 04:26:14 -37.3 Dark Up 55.8 138.9 Up 04:11:14 - 04:41:14 205
Bend 04:26:15 -37.2 Dark Up 55.9 138.5 Up 04:11:15 - 04:41:15 185
Oregon Observatory 04:26:16 -37.1 Dark Up 55.9 138.2 Up 04:11:16 - 04:41:16 168
La Pine/Gilchrist 04:26:16 -37.1 Dark Up 56.1 137.9 Up 04:11:16 - 04:41:16 149
North Lake 04:26:14 -37.6 Dark Up 56.7 138.3 Up 04:11:14 - 04:41:14 103
Paisley 04:26:14 -37.9 Dark Up 57.3 138.3 Up 04:11:14 - 04:41:14 47
Chiloquin 04:26:19 -37.0 Dark Up 56.7 136.2 Up 04:11:19 - 04:41:19 41
Klamath Falls 04:26:19 -37.1 Dark Up 57.0 136.0 Up 04:11:19 - 04:41:19 7
Lakeview 04:26:14 -38.1 Dark Up 57.7 138.1 Up 04:11:14 - 04:41:14 -5
Tulelake 04:26:18 -37.3 Dark Up 57.3 136.1 Up 04:11:18 - 04:41:18 -22
Cedarville 04:26:14 -38.3 Dark Up 58.3 137.6 Up 04:11:14 - 04:41:14 -71
Fall River/Burney 04:26:19 -37.5 Dark Up 58.0 135.3 Up 04:11:19 - 04:41:19 -113
Susanville 04:26:17 -38.1 Dark Up 58.9 135.7 Up 04:11:17 - 04:41:17 -180
Greenville 04:26:18 -37.9 Dark Up 58.9 134.9 Up 04:11:18 - 04:41:18 -206
Gimple 04:26:18 -38.0 Dark Up 59.0 135.0 Up 04:11:18 - 04:41:18 -207
Quincy 04:26:18 -37.9 Dark Up 59.1 134.7 Up 04:11:18 - 04:41:18 -227
Portola 04:26:17 -38.3 Dark Up 59.4 135.2 Up 04:11:17 - 04:41:17 -242
Niwot 04:25:17 -49.6 Dark Up 65.1 164.3 Up 04:10:17 - 04:40:17 -243
SwRI 04:25:18 -49.5 Dark Up 65.1 164.0 Up 04:10:18 - 04:40:18 -254
Reno 04:26:14 -38.8 Dark Up 59.9 135.9 Up 04:11:14 - 04:41:14 -272
Carson City 04:26:15 -38.9 Dark Up 60.2 135.5 Up 04:11:15 - 04:41:15 -309
Yerington 04:26:13 -39.4 Dark Up 60.7 136.3 Up 04:11:13 - 04:41:13 -332
Gardnerville 04:26:15 -38.9 Dark Up 60.4 135.3 Up 04:11:15 - 04:41:15 -334
Hawthorne 04:26:11 -39.8 Dark Up 61.3 136.6 Up 04:11:11 - 04:41:11 -382
Tonopah 04:26:06 -40.9 Dark Up 62.4 138.4 Up 04:11:06 - 04:41:06 -435
Lee Vining 04:26:13 -39.5 Dark Up 61.5 135.1 Up 04:11:13 - 04:41:13 -437
Bishop 04:26:11 -40.1 Dark Up 62.3 135.5 Up 04:11:11 - 04:41:11 -502
Beatty 04:26:05 -41.4 Dark Up 63.5 137.7 Up 04:11:05 - 04:41:05 -557
Lone Pine 04:26:10 -40.4 Dark Up 63.0 135.0 Up 04:11:10 - 04:41:10 -582
Indian Springs 04:26:01 -42.3 Dark Up 64.3 139.2 Up 04:11:01 - 04:41:01 -594
Henderson 04:25:58 -42.9 Dark Up 65.1 139.7 Up 04:10:58 - 04:40:58 -652
CPSLO 04:26:22 -38.4 Dark Up 62.3 129.0 Up 04:11:22 - 04:41:22 -704
Searchlight/Boulder City 04:25:58 -43.0 Dark Up 65.5 139.0 Up 04:10:58 - 04:40:58 -712
Patrick 04:25:50 -43.8 Dark Up 66.1 141.0 Up 04:10:50 - 04:40:50 -725
Kingman/Dolan Springs 04:25:55 -43.7 Dark Up 66.2 140.3 Up 04:10:55 - 04:40:55 -743
Laughlin/Bullhead City 04:25:57 -43.3 Dark Up 65.9 139.3 Up 04:10:57 - 04:40:57 -744
DCO 04:25:50 -44.4 Dark Up 66.7 142.0 Up 04:10:50 - 04:40:50 -755
Mohave Valley 04:25:57 -43.3 Dark Up 66.2 138.9 Up 04:10:57 - 04:40:57 -773
Lake Havasu City 04:25:57 -43.5 Dark Up 66.6 138.8 Up 04:10:57 - 04:40:57 -816
Wildwood 04:26:15 -40.1 Dark Up 64.4 130.4 Up 04:11:15 - 04:41:15 -842
Parker 04:25:56 -43.6 Dark Up 66.9 138.3 Up 04:10:56 - 04:40:56 -853
Idyllwild 04:26:07 -41.6 Dark Up 65.8 133.1 Up 04:11:07 - 04:41:07 -888
Blythe 04:25:58 -43.4 Dark Up 67.1 136.8 Up 04:10:58 - 04:40:58 -907
Calipatria 04:26:02 -42.6 Dark Up 66.9 134.2 Up 04:11:02 - 04:41:02 -956
Yuma 04:25:59 -43.4 Dark Up 67.7 135.2 Up 04:10:59 - 04:40:59 -1005

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, (2022/01/19 04:25UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  8.76  48
Bellatrix      05:25:07.8 +06:20:58  1.6 10.82  55
126 Tau        05:41:17.7 +16:32:02  4.6  1.33  48
PPM 121346     05:44:53.2 +16:05:10  7.1  0.36  48
PPM 121389     05:47:01.6 +15:51:21  8.7  0.23  47
91205          05:46:05.6 +15:52:37 14.7        47
Positions are for J2000

Event circumstances last updated at 2019/06/08 02:58:28 UT

Marc W. Buie, Southwest Research Institute

RECON