RECON: TNO occultation with 136204

Event between (136204) 03WL7 and star GA1100:03237434 with event index number of 1116916

Geocentric closest approach at 2022/01/31 09:47:40 UTC

J2000 position of star is 10:00:06.4 +20:27:56
Equinox of date position of star is 10:01:11.0 +20:22:18
Stellar brightness G=14.0, use SENSEUP=64
Star is 155 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 17.2 AU from the Sun and 16.2 AU from the Earth.
The TNO is moving 21.9 km/sec on the sky relative to the star, or, 6.7 arcsec/hr.
The 1-sigma error in the time of the event is 387 seconds.
The 1-sigma cross-track error in the shadow position is 5322 km.
The sky-plane scale is 11759.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.8
Diameter=104.7 km assuming a 5% albedo -- 4.8 sec chord
Diameter=42.8 km assuming a 30% albedo -- 2.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 136204, (2022/01/31 09:48UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:32.8 +11:51:30  1.3  8.73 150
PPM 100044     10:04:02.6 +21:50:30  5.4  1.61 155
PPM 099985     09:58:56.2 +20:03:52  8.3  0.63 155
PPM 100002     10:00:25.3 +20:18:29  9.3  0.22 155
136204         10:01:19.8 +20:21:32 14.0       155
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 2.3 sigma about the mid-time.
The median site spacing is 17.2 km RECON observability=1.0 and success probability=6.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 09:48:04 -52.0 Dark Down 59.9 195.4 Up 09:33:04 - 10:03:04 4739
Summerland 09:48:04 -52.4 Dark Down 60.2 195.1 Up 09:33:04 - 10:03:04 4705
Penticton 09:48:04 -52.4 Dark Down 60.2 195.3 Up 09:33:04 - 10:03:04 4703
Okanagan Falls 09:48:03 -52.5 Dark Down 60.4 195.3 Up 09:33:03 - 10:03:03 4685
Oliver 09:48:03 -52.7 Dark Down 60.6 195.4 Up 09:33:03 - 10:03:03 4672
Anarchist Mountain Observatory 09:48:02 -52.7 Dark Down 60.7 195.9 Up 09:33:02 - 10:03:02 4662
Oroville 09:48:02 -52.8 Dark Down 60.8 195.8 Up 09:33:02 - 10:03:02 4653
Tonasket 09:48:01 -53.0 Dark Down 61.0 195.9 Up 09:33:01 - 10:03:01 4633
Okanogan 09:48:01 -53.3 Dark Down 61.4 195.8 Up 09:33:01 - 10:03:01 4599
Brewster 09:48:01 -53.6 Dark Down 61.7 195.5 Up 09:33:01 - 10:03:01 4569
Manson/Chelan 09:48:02 -53.9 Dark Down 61.9 194.9 Up 09:33:02 - 10:03:02 4540
Entiat 09:48:02 -54.1 Dark Down 62.2 194.9 Up 09:33:02 - 10:03:02 4519
Wenatchee 09:48:02 -54.3 Dark Down 62.4 194.8 Up 09:33:02 - 10:03:02 4493
Ellensburg 09:48:02 -54.8 Dark Down 62.9 194.6 Up 09:33:02 - 10:03:02 4450
Pasco 09:47:56 -54.7 Dark Down 63.3 197.8 Up 09:32:56 - 10:02:56 4424
Yakima 09:48:00 -55.1 Dark Down 63.3 194.7 Up 09:33:00 - 10:03:00 4413
PNWRO 09:47:54 -54.7 Dark Down 63.5 198.4 Up 09:32:54 - 10:02:54 4408
Toppenish/White Swan 09:48:00 -55.2 Dark Down 63.4 195.2 Up 09:33:00 - 10:03:00 4398
George/Umatilla 09:47:56 -55.0 Dark Down 63.7 197.6 Up 09:32:56 - 10:02:56 4387
Niwot 09:46:56 -50.0 Dark Down 62.7 230.4 Up 09:31:56 - 10:01:56 4342
Goldendale 09:48:00 -55.8 Dark Down 64.0 194.6 Up 09:33:00 - 10:03:00 4335
SwRI 09:46:56 -50.1 Dark Down 62.9 230.4 Up 09:31:56 - 10:01:56 4329
The Dalles 09:48:01 -56.1 Dark Down 64.3 193.9 Up 09:33:01 - 10:03:01 4304
Maupin 09:47:59 -56.4 Dark Down 64.7 194.4 Up 09:32:59 - 10:02:59 4269
Madras/Culver 09:47:59 -56.8 Dark Down 65.3 194.6 Up 09:32:59 - 10:02:59 4217
Redmond 09:47:58 -57.1 Dark Down 65.6 194.6 Up 09:32:58 - 10:02:58 4183
Sisters 09:48:00 -57.3 Dark Down 65.7 193.7 Up 09:33:00 - 10:03:00 4173
Bend 09:47:59 -57.3 Dark Down 65.8 194.4 Up 09:32:59 - 10:02:59 4158
Oregon Observatory 09:47:58 -57.5 Dark Down 66.0 194.2 Up 09:32:58 - 10:02:58 4138
La Pine/Gilchrist 09:47:58 -57.7 Dark Down 66.2 194.2 Up 09:32:58 - 10:02:58 4118
North Lake 09:47:55 -57.7 Dark Down 66.6 195.8 Up 09:32:55 - 10:02:55 4095
Paisley 09:47:53 -57.9 Dark Down 67.0 197.0 Up 09:32:53 - 10:02:53 4054
Lakeview 09:47:52 -58.2 Dark Down 67.4 197.8 Up 09:32:52 - 10:02:52 4013
Chiloquin 09:47:58 -58.7 Dark Down 67.4 194.0 Up 09:32:58 - 10:02:58 4003
Klamath Falls 09:47:56 -58.9 Dark Down 67.7 194.4 Up 09:32:56 - 10:02:56 3973
Cedarville 09:47:50 -58.6 Dark Down 68.0 198.7 Up 09:32:50 - 10:02:50 3957
Tulelake 09:47:55 -58.9 Dark Down 67.9 195.3 Up 09:32:55 - 10:02:55 3956
Fall River/Burney 09:47:53 -59.6 Dark Down 68.8 196.1 Up 09:32:53 - 10:02:53 3873
Susanville 09:47:49 -59.6 Dark Down 69.2 198.4 Up 09:32:49 - 10:02:49 3836
Gimple 09:47:50 -59.9 Dark Down 69.5 198.1 Up 09:32:50 - 10:02:50 3803
Greenville 09:47:49 -59.9 Dark Down 69.5 197.9 Up 09:32:49 - 10:02:49 3800
Portola 09:47:47 -59.9 Dark Down 69.7 199.4 Up 09:32:47 - 10:02:47 3784
Quincy 09:47:49 -60.1 Dark Down 69.7 198.1 Up 09:32:49 - 10:02:49 3781
Reno 09:47:45 -59.7 Dark Down 69.8 201.3 Up 09:32:45 - 10:02:45 3780
Yerington 09:47:41 -59.7 Dark Down 70.1 203.6 Up 09:32:41 - 10:02:41 3748
Carson City 09:47:44 -59.9 Dark Down 70.1 201.7 Up 09:32:44 - 10:02:44 3746
Tonopah 09:47:32 -59.0 Dark Down 70.3 209.6 Up 09:32:32 - 10:02:32 3724
Gardnerville 09:47:43 -60.0 Dark Down 70.4 202.1 Up 09:32:43 - 10:02:43 3724
Hawthorne 09:47:38 -59.6 Dark Down 70.4 205.4 Up 09:32:38 - 10:02:38 3721
Lee Vining 09:47:39 -60.3 Dark Down 71.1 204.8 Up 09:32:39 - 10:02:39 3651
Indian Springs 09:47:23 -58.8 Dark Down 70.9 215.7 Up 09:32:23 - 10:02:23 3636
Beatty 09:47:28 -59.4 Dark Down 71.1 212.4 Up 09:32:28 - 10:02:28 3630
Bishop 09:47:35 -60.2 Dark Down 71.4 207.5 Up 09:32:35 - 10:02:35 3618
Henderson 09:47:20 -58.6 Dark Down 71.0 218.3 Up 09:32:20 - 10:02:20 3610
Patrick 09:47:14 -58.1 Dark Down 70.9 222.0 Up 09:32:14 - 10:02:14 3590
DCO 09:47:11 -57.7 Dark Down 70.7 224.2 Up 09:32:11 - 10:02:11 3587
Kingman/Dolan Springs 09:47:14 -58.4 Dark Down 71.2 222.0 Up 09:32:14 - 10:02:14 3562
Searchlight/Boulder City 09:47:18 -58.8 Dark Down 71.4 219.5 Up 09:32:18 - 10:02:18 3557
Lone Pine 09:47:32 -60.4 Dark Down 71.9 209.5 Up 09:32:32 - 10:02:32 3556
Laughlin/Bullhead City 09:47:16 -58.7 Dark Down 71.5 220.9 Up 09:32:16 - 10:02:16 3541
Mohave Valley 09:47:16 -58.9 Dark Down 71.7 221.4 Up 09:32:16 - 10:02:16 3515
Lake Havasu City 09:47:14 -58.9 Dark Down 71.8 222.8 Up 09:32:14 - 10:02:14 3486
Parker 09:47:13 -59.0 Dark Down 72.1 223.6 Up 09:32:13 - 10:02:13 3453
Blythe 09:47:13 -59.4 Dark Down 72.6 224.0 Up 09:32:13 - 10:02:13 3391
CPSLO 09:47:40 -62.8 Dark Down 74.0 203.8 Up 09:32:40 - 10:02:40 3341
Idyllwild 09:47:20 -60.9 Dark Down 73.7 218.3 Up 09:32:20 - 10:02:20 3325
Calipatria 09:47:16 -60.3 Dark Down 73.5 222.8 Up 09:32:16 - 10:02:16 3309
Yuma 09:47:11 -59.9 Dark Down 73.3 226.0 Up 09:32:11 - 10:02:11 3300
Wildwood 09:47:29 -62.1 Dark Down 74.3 212.1 Up 09:32:29 - 10:02:29 3293

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 136204, (2022/01/31 09:48UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  8.73 150
PPM 100044     10:02:48.9 +21:56:57  5.4  1.61 155
PPM 099985     09:57:42.8 +20:10:14  8.3  0.63 155
PPM 100002     09:59:11.9 +20:24:52  9.3  0.22 155
136204         10:00:06.4 +20:27:56 14.0       155
Positions are for J2000

Event circumstances last updated at 2019/06/08 03:02:05 UT

Marc W. Buie, Southwest Research Institute

RECON