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 09:34:09 UTC

J2000 position of star is 10:00:06.4 +20:27:56
Equinox of date position of star is 10:01:13.5 +20:22:05
Stellar brightness G=14.0, use SENSEUP=64
Star is 155 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.3

[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 117 seconds.
The 1-sigma cross-track error in the shadow position is 1756 km.
The sky-plane scale is 11759.5 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=109.7 km assuming a 5% albedo -- 2.8 sec chord
Diameter=44.8 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 136204, (2022/01/31 09:34UT)
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 5.0 sigma about the mid-time.
The median site spacing is 20.1 km RECON observability=1.0 and success probability=21.9%
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 09:34:45 -53.0 Dark Down 60.0 189.3 Up 09:24:31 - 09:44:59 1796
Kelowna 09:34:44 -53.4 Dark Down 60.4 189.1 Up 09:24:30 - 09:44:58 1758
Peachland 09:34:45 -53.6 Dark Down 60.5 188.6 Up 09:24:31 - 09:44:59 1740
Summerland 09:34:45 -53.7 Dark Down 60.6 188.8 Up 09:24:31 - 09:44:59 1729
Penticton 09:34:44 -53.7 Dark Down 60.7 189.0 Up 09:24:30 - 09:44:58 1726
Oliver 09:34:43 -54.0 Dark Down 61.0 189.1 Up 09:24:29 - 09:44:57 1695
Anarchist Mountain Observatory 09:34:42 -54.1 Dark Down 61.2 189.5 Up 09:24:28 - 09:44:56 1685
Tonasket 09:34:42 -54.3 Dark Down 61.5 189.5 Up 09:24:28 - 09:44:56 1655
Okanogan 09:34:42 -54.7 Dark Down 61.9 189.3 Up 09:24:28 - 09:44:56 1621
Brewster 09:34:42 -55.0 Dark Down 62.1 189.0 Up 09:24:28 - 09:44:56 1591
Manson/Chelan 09:34:43 -55.3 Dark Down 62.4 188.3 Up 09:24:29 - 09:44:57 1562
Entiat 09:34:43 -55.5 Dark Down 62.6 188.2 Up 09:24:29 - 09:44:57 1540
Victoria 09:34:55 -55.9 Dark Down 61.9 181.7 Up 09:24:41 - 09:45:09 1535
Wenatchee 09:34:43 -55.7 Dark Down 62.9 188.1 Up 09:24:29 - 09:44:57 1514
Ellensburg 09:34:43 -56.2 Dark Down 63.3 187.7 Up 09:24:29 - 09:44:57 1470
Pasco 09:34:37 -56.2 Dark Down 63.9 190.9 Up 09:24:23 - 09:44:51 1441
Yakima 09:34:42 -56.5 Dark Down 63.7 187.8 Up 09:24:28 - 09:44:56 1432
PNWRO 09:34:36 -56.3 Dark Down 64.1 191.5 Up 09:24:22 - 09:44:50 1425
Toppenish/White Swan 09:34:41 -56.6 Dark Down 63.9 188.2 Up 09:24:27 - 09:44:55 1417
Goldendale 09:34:42 -57.2 Dark Down 64.5 187.5 Up 09:24:28 - 09:44:56 1354
Niwot 09:33:37 -52.3 Dark Down 64.6 224.8 Up 09:23:23 - 09:43:51 1334
The Dalles 09:34:42 -57.6 Dark Down 64.7 186.7 Up 09:24:28 - 09:44:56 1323
SwRI 09:33:38 -52.4 Dark Down 64.8 224.8 Up 09:23:24 - 09:43:52 1321
Maupin 09:34:41 -57.8 Dark Down 65.2 187.1 Up 09:24:27 - 09:44:55 1287
Redmond 09:34:40 -58.6 Dark Down 66.1 187.1 Up 09:24:26 - 09:44:54 1200
Sisters 09:34:42 -58.8 Dark Down 66.1 186.2 Up 09:24:28 - 09:44:56 1191
Bend 09:34:40 -58.8 Dark Down 66.3 186.8 Up 09:24:26 - 09:44:54 1175
Oregon Observatory 09:34:40 -59.0 Dark Down 66.5 186.6 Up 09:24:26 - 09:44:54 1155
La Pine/Gilchrist 09:34:40 -59.2 Dark Down 66.7 186.5 Up 09:24:26 - 09:44:54 1134
North Lake 09:34:38 -59.3 Dark Down 67.1 188.0 Up 09:24:24 - 09:44:52 1110
Paisley 09:34:35 -59.6 Dark Down 67.6 189.0 Up 09:24:21 - 09:44:49 1068
Lakeview 09:34:33 -59.9 Dark Down 68.0 189.7 Up 09:24:19 - 09:44:47 1026
Klamath Falls 09:34:39 -60.5 Dark Down 68.1 186.2 Up 09:24:25 - 09:44:53 987
Cedarville 09:34:32 -60.3 Dark Down 68.7 190.4 Up 09:24:18 - 09:44:46 968
Fall River/Burney 09:34:35 -61.3 Dark Down 69.3 187.5 Up 09:24:21 - 09:44:49 885
Susanville 09:34:32 -61.4 Dark Down 69.8 189.7 Up 09:24:18 - 09:44:46 846
Gimple 09:34:32 -61.7 Dark Down 70.1 189.2 Up 09:24:18 - 09:44:46 813
Greenville 09:34:32 -61.7 Dark Down 70.1 189.0 Up 09:24:18 - 09:44:46 810
Portola 09:34:30 -61.7 Dark Down 70.4 190.4 Up 09:24:16 - 09:44:44 793
Quincy 09:34:32 -61.9 Dark Down 70.3 189.1 Up 09:24:18 - 09:44:46 791
Reno 09:34:27 -61.6 Dark Down 70.6 192.4 Up 09:24:13 - 09:44:41 787
Yerington 09:34:24 -61.6 Dark Down 71.0 194.5 Up 09:24:10 - 09:44:38 754
Carson City 09:34:26 -61.8 Dark Down 70.9 192.6 Up 09:24:12 - 09:44:40 753
Gardnerville 09:34:25 -62.0 Dark Down 71.1 192.9 Up 09:24:11 - 09:44:39 731
Tonopah 09:34:15 -61.1 Dark Down 71.4 200.7 Up 09:24:01 - 09:44:29 726
Hawthorne 09:34:21 -61.6 Dark Down 71.3 196.3 Up 09:24:07 - 09:44:35 726
Lee Vining 09:34:22 -62.3 Dark Down 72.0 195.4 Up 09:24:08 - 09:44:36 655
Indian Springs 09:34:06 -61.1 Dark Down 72.3 206.8 Up 09:23:52 - 09:44:20 634
Beatty 09:34:11 -61.6 Dark Down 72.4 203.3 Up 09:23:57 - 09:44:25 629
Bishop 09:34:18 -62.3 Dark Down 72.4 198.0 Up 09:24:04 - 09:44:32 620
Henderson 09:34:03 -60.9 Dark Down 72.5 209.5 Up 09:23:49 - 09:44:17 606
Patrick 09:33:57 -60.5 Dark Down 72.6 213.6 Up 09:23:43 - 09:44:11 584
DCO 09:33:54 -60.1 Dark Down 72.5 216.1 Up 09:23:40 - 09:44:08 579
Kingman/Dolan Springs 09:33:58 -60.7 Dark Down 72.8 213.5 Up 09:23:44 - 09:44:12 556
Searchlight/Boulder City 09:34:01 -61.2 Dark Down 73.0 210.6 Up 09:23:47 - 09:44:15 552
Laughlin/Bullhead City 09:33:59 -61.1 Dark Down 73.1 212.1 Up 09:23:45 - 09:44:13 535
Mohave Valley 09:33:59 -61.2 Dark Down 73.3 212.6 Up 09:23:45 - 09:44:13 509
George/Scottsdale 09:33:46 -59.9 Dark Down 72.9 222.2 Up 09:23:32 - 09:44:00 492
Lake Havasu City 09:33:57 -61.3 Dark Down 73.5 214.0 Up 09:23:43 - 09:44:11 478
Parker 09:33:56 -61.4 Dark Down 73.8 214.8 Up 09:23:42 - 09:44:10 445
Blythe 09:33:56 -61.9 Dark Down 74.4 214.9 Up 09:23:42 - 09:44:10 383
CPSLO 09:34:23 -65.0 Dark Down 74.8 192.6 Up 09:24:09 - 09:44:37 343
Idyllwild 09:34:05 -63.3 Dark Down 75.2 208.1 Up 09:23:51 - 09:44:19 320
Calipatria 09:33:59 -62.8 Dark Down 75.2 213.1 Up 09:23:45 - 09:44:13 301
Wildwood 09:34:12 -64.4 Dark Down 75.5 201.1 Up 09:23:58 - 09:44:26 291
Yuma 09:33:55 -62.4 Dark Down 75.2 216.8 Up 09:23:41 - 09:44:09 291

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 09:34UT)
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 2020/03/12 22:54:42 UT

Marc W. Buie, Southwest Research Institute

RECON