RECON: TNO occultation with 69986

Event between (69986) 98WW24 and star GA1020:01839274 with event index number of 1244230

Geocentric closest approach at 2022/12/23 10:14:29 UTC

J2000 position of star is 06:27:22.0 +13:28:19
Equinox of date position of star is 06:28:27.7 +13:27:31
Stellar brightness G=15.0, use SENSEUP=128
Star is 165 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 35.7 AU from the Sun and 34.7 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 307 seconds.
The 1-sigma cross-track error in the shadow position is 2166 km.
The sky-plane scale is 25162.3 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 -- 2.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 69986, (2022/12/23 10:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.0 +07:24:34  0.4  9.97 160
Alhena         06:39:02.3 +16:22:40  1.9  3.85 167
PPM 122497     06:28:34.6 +14:52:25  6.2  1.42 167
PPM 122480     06:27:57.0 +13:05:07  7.0  0.41 165
PPM 122470     06:27:23.8 +13:36:29  9.6  0.34 166
69986          06:28:40.0 +13:27:22 15.0       165
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 2.9 sigma about the mid-time.
The median site spacing is 21.3 km RECON observability=1.0 and success probability=20.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:13:10 -52.5 Dark Down 46.6 223.3 Up 09:58:10 - 10:28:10 1510
Summerland 10:13:10 -52.8 Dark Down 46.9 223.2 Up 09:58:10 - 10:28:10 1481
Penticton 10:13:10 -52.8 Dark Down 46.9 223.3 Up 09:58:10 - 10:28:10 1476
Okanagan Falls 10:13:10 -52.9 Dark Down 47.0 223.5 Up 09:58:10 - 10:28:10 1460
Oliver 10:13:09 -53.0 Dark Down 47.2 223.6 Up 09:58:09 - 10:28:09 1445
Anarchist Mountain Observatory 10:13:09 -52.9 Dark Down 47.2 224.0 Up 09:58:09 - 10:28:09 1432
Oroville 10:13:09 -53.0 Dark Down 47.3 223.9 Up 09:58:09 - 10:28:09 1425
Tonasket 10:13:08 -53.1 Dark Down 47.4 224.1 Up 09:58:08 - 10:28:08 1404
Okanogan 10:13:08 -53.4 Dark Down 47.8 224.2 Up 09:58:08 - 10:28:08 1373
Brewster 10:13:08 -53.7 Dark Down 48.0 224.1 Up 09:58:08 - 10:28:08 1347
Manson/Chelan 10:13:09 -54.0 Dark Down 48.4 223.8 Up 09:58:09 - 10:28:09 1326
Entiat 10:13:09 -54.1 Dark Down 48.6 223.9 Up 09:58:09 - 10:28:09 1305
Wenatchee 10:13:09 -54.3 Dark Down 48.8 224.0 Up 09:58:09 - 10:28:09 1282
Ellensburg 10:13:09 -54.7 Dark Down 49.2 224.0 Up 09:58:09 - 10:28:09 1242
Yakima 10:13:08 -54.9 Dark Down 49.5 224.3 Up 09:58:08 - 10:28:08 1205
Toppenish/White Swan 10:13:07 -54.9 Dark Down 49.6 224.7 Up 09:58:07 - 10:28:07 1187
Pasco 10:13:04 -54.2 Dark Down 49.0 226.4 Up 09:58:04 - 10:28:04 1186
PNWRO 10:13:03 -54.1 Dark Down 49.1 226.9 Up 09:58:03 - 10:28:03 1165
George/Umatilla 10:13:04 -54.5 Dark Down 49.4 226.4 Up 09:58:04 - 10:28:04 1154
Goldendale 10:13:08 -55.4 Dark Down 50.2 224.6 Up 09:58:08 - 10:28:08 1133
The Dalles 10:13:08 -55.7 Dark Down 50.5 224.3 Up 09:58:08 - 10:28:08 1109
Maupin 10:13:08 -55.9 Dark Down 50.8 224.8 Up 09:58:08 - 10:28:08 1071
Madras/Culver 10:13:07 -56.2 Dark Down 51.2 225.2 Up 09:58:07 - 10:28:07 1020
Redmond 10:13:07 -56.4 Dark Down 51.4 225.5 Up 09:58:07 - 10:28:07 986
Sisters 10:13:08 -56.6 Dark Down 51.6 224.9 Up 09:58:08 - 10:28:08 985
Bend 10:13:07 -56.5 Dark Down 51.7 225.5 Up 09:58:07 - 10:28:07 965
Oregon Observatory 10:13:07 -56.7 Dark Down 51.8 225.5 Up 09:58:07 - 10:28:07 948
La Pine/Gilchrist 10:13:07 -56.8 Dark Down 52.0 225.6 Up 09:58:07 - 10:28:07 928
North Lake 10:13:04 -56.7 Dark Down 52.0 226.8 Up 09:58:04 - 10:28:04 892
Paisley 10:13:03 -56.7 Dark Down 52.2 227.8 Up 09:58:03 - 10:28:03 842
Chiloquin 10:13:06 -57.6 Dark Down 53.0 226.1 Up 09:58:06 - 10:28:06 819
Lakeview 10:13:01 -56.7 Dark Down 52.4 228.5 Up 09:58:01 - 10:28:01 796
Klamath Falls 10:13:06 -57.7 Dark Down 53.2 226.6 Up 09:58:06 - 10:28:06 787
Tulelake 10:13:04 -57.6 Dark Down 53.2 227.2 Up 09:58:04 - 10:28:04 764
Niwot 10:12:17 -46.4 Dark Down 43.9 247.1 Up 09:57:17 - 10:27:17 761
SwRI 10:12:17 -46.5 Dark Down 44.1 247.1 Up 09:57:17 - 10:27:17 750
Cedarville 10:13:00 -56.9 Dark Down 52.8 229.4 Up 09:58:00 - 10:28:00 734
Fall River/Burney 10:13:03 -57.9 Dark Down 53.8 228.3 Up 09:58:03 - 10:28:03 677
Susanville 10:13:00 -57.6 Dark Down 53.8 229.9 Up 09:58:00 - 10:28:00 622
Gimple 10:13:00 -57.9 Dark Down 54.1 229.9 Up 09:58:00 - 10:28:00 593
Greenville 10:13:01 -57.9 Dark Down 54.1 229.8 Up 09:58:01 - 10:28:01 593
Quincy 10:13:00 -58.0 Dark Down 54.2 230.0 Up 09:58:00 - 10:28:00 573
Portola 10:12:59 -57.7 Dark Down 54.0 230.8 Up 09:57:59 - 10:27:59 565
Reno 10:12:56 -57.4 Dark Down 53.8 231.9 Up 09:57:56 - 10:27:56 545
Carson City 10:12:56 -57.5 Dark Down 54.0 232.3 Up 09:57:56 - 10:27:56 510
Yerington 10:12:54 -57.1 Dark Down 53.8 233.3 Up 09:57:54 - 10:27:54 496
Gardnerville 10:12:55 -57.5 Dark Down 54.2 232.6 Up 09:57:55 - 10:27:55 486
Hawthorne 10:12:52 -56.8 Dark Down 53.7 234.5 Up 09:57:52 - 10:27:52 455
Tonopah 10:12:47 -55.9 Dark Down 53.1 236.7 Up 09:57:47 - 10:27:47 423
Lee Vining 10:12:52 -57.3 Dark Down 54.4 234.5 Up 09:57:52 - 10:27:52 395
Bishop 10:12:49 -57.0 Dark Down 54.2 236.1 Up 09:57:49 - 10:27:49 342
Beatty 10:12:44 -55.8 Dark Down 53.4 238.5 Up 09:57:44 - 10:27:44 313
Indian Springs 10:12:40 -55.0 Dark Down 52.8 240.1 Up 09:57:40 - 10:27:40 291
Lone Pine 10:12:47 -56.9 Dark Down 54.4 237.3 Up 09:57:47 - 10:27:47 270
Henderson 10:12:37 -54.6 Dark Down 52.6 241.5 Up 09:57:37 - 10:27:37 245
Patrick 10:12:33 -53.8 Dark Down 52.1 243.4 Up 09:57:33 - 10:27:33 195
Searchlight/Boulder City 10:12:36 -54.7 Dark Down 52.8 242.2 Up 09:57:36 - 10:27:36 188
DCO 10:12:31 -53.3 Dark Down 51.7 244.5 Up 09:57:31 - 10:27:31 172
Kingman/Dolan Springs 10:12:33 -54.0 Dark Down 52.3 243.4 Up 09:57:33 - 10:27:33 170
Laughlin/Bullhead City 10:12:35 -54.4 Dark Down 52.7 242.9 Up 09:57:35 - 10:27:35 162
Mohave Valley 10:12:35 -54.5 Dark Down 52.9 243.2 Up 09:57:35 - 10:27:35 135
CPSLO 10:12:54 -59.2 Dark Down 56.9 235.7 Up 09:57:54 - 10:27:54 114
Lake Havasu City 10:12:33 -54.3 Dark Down 52.8 244.0 Up 09:57:33 - 10:27:33 97
Parker 10:12:33 -54.3 Dark Down 53.0 244.4 Up 09:57:33 - 10:27:33 62
Wildwood 10:12:46 -57.8 Dark Down 56.1 239.8 Up 09:57:46 - 10:27:46 10
Blythe 10:12:33 -54.6 Dark Down 53.4 244.7 Up 09:57:33 - 10:27:33 5
Idyllwild 10:12:40 -56.4 Dark Down 54.9 242.4 Up 09:57:40 - 10:27:40 -7
Calipatria 10:12:35 -55.5 Dark Down 54.3 244.4 Up 09:57:35 - 10:27:35 -56
Yuma 10:12:32 -54.8 Dark Down 53.9 245.8 Up 09:57:32 - 10:27:32 -90

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 69986, (2022/12/23 10:14UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  9.97 160
Alhena         06:37:42.8 +16:23:57  1.9  3.85 167
PPM 122497     06:27:15.8 +14:53:21  6.2  1.42 167
PPM 122480     06:26:39.2 +13:06:02  7.0  0.41 165
PPM 122470     06:26:05.7 +13:37:23  9.6  0.34 166
69986          06:27:22.0 +13:28:19 15.0       165
Positions are for J2000

Event circumstances last updated at 2019/05/13 22:52:20 UT

Marc W. Buie, Southwest Research Institute

RECON