RECON: TNO occultation with 26308

Event between (26308) 98SM165 and star GA0960:00283013 with event index number of 1302041

Geocentric closest approach at 2023/11/09 10:34:31 UTC

J2000 position of star is 03:19:20.1 +07:53:48
Equinox of date position of star is 03:20:24.2 +07:58:05
Stellar brightness G=13.8, use SENSEUP=64
Star is 131 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 42.8 AU from the Sun and 41.8 AU from the Earth.
The TNO is moving 25.6 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 211 seconds.
The 1-sigma cross-track error in the shadow position is 2102 km.
The sky-plane scale is 30348.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.7
Diameter=436.5 km assuming a 5% albedo -- 17.0 sec chord
Diameter=178.2 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 2:1E+6:3EII
 
 
 
 
 
 

Star training set for 26308, (2023/11/09 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.5 +16:33:20  0.8 20.58 112
Menkar         03:03:31.8 +04:10:55  2.5  5.70 136
1Omi Tau       03:26:06.0 +09:06:41  3.6  1.76 130
PPM 146480     03:22:17.8 +08:32:08  8.0  0.69 131
PPM 146453     03:20:57.3 +08:06:09 10.0  0.15 131
26308          03:20:36.8 +07:58:55 13.8       131
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 4.3 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=23.6%
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 10:32:09 -42.2 Dark Down 37.6 229.1 Up 10:17:09 - 10:47:09 1353
Kelowna 10:32:09 -42.5 Dark Down 37.9 229.2 Up 10:17:09 - 10:47:09 1320
Summerland 10:32:09 -42.7 Dark Down 38.2 229.1 Up 10:17:09 - 10:47:09 1298
Penticton 10:32:09 -42.7 Dark Down 38.2 229.3 Up 10:17:09 - 10:47:09 1290
Oliver 10:32:09 -42.9 Dark Down 38.4 229.5 Up 10:17:09 - 10:47:09 1258
Victoria 10:32:17 -45.4 Dark Down 40.7 225.6 Up 10:17:17 - 10:47:17 1243
Anarchist Mountain Observatory 10:32:08 -42.8 Dark Down 38.4 229.8 Up 10:17:08 - 10:47:08 1240
Tonasket 10:32:08 -43.0 Dark Down 38.6 229.9 Up 10:17:08 - 10:47:08 1212
Okanogan 10:32:08 -43.3 Dark Down 38.9 230.0 Up 10:17:08 - 10:47:08 1182
Brewster 10:32:08 -43.5 Dark Down 39.2 229.9 Up 10:17:08 - 10:47:08 1159
Manson/Chelan 10:32:09 -43.8 Dark Down 39.5 229.6 Up 10:17:09 - 10:47:09 1144
Entiat 10:32:09 -44.0 Dark Down 39.7 229.7 Up 10:17:09 - 10:47:09 1124
Wenatchee 10:32:09 -44.1 Dark Down 39.9 229.8 Up 10:17:09 - 10:47:09 1101
Ellensburg 10:32:09 -44.5 Dark Down 40.3 229.8 Up 10:17:09 - 10:47:09 1065
Yakima 10:32:09 -44.7 Dark Down 40.6 230.0 Up 10:17:09 - 10:47:09 1027
Toppenish/White Swan 10:32:08 -44.7 Dark Down 40.6 230.4 Up 10:17:08 - 10:47:08 1004
Pasco 10:32:05 -43.9 Dark Down 40.0 231.8 Up 10:17:05 - 10:47:05 977
Goldendale 10:32:09 -45.2 Dark Down 41.2 230.3 Up 10:17:09 - 10:47:09 957
PNWRO 10:32:04 -43.9 Dark Down 40.1 232.2 Up 10:17:04 - 10:47:04 951
The Dalles 10:32:10 -45.5 Dark Down 41.6 230.0 Up 10:17:10 - 10:47:10 940
Maupin 10:32:09 -45.6 Dark Down 41.8 230.4 Up 10:17:09 - 10:47:09 898
Sisters 10:32:10 -46.3 Dark Down 42.6 230.5 Up 10:17:10 - 10:47:10 820
Redmond 10:32:09 -46.1 Dark Down 42.4 230.9 Up 10:17:09 - 10:47:09 813
Bend 10:32:09 -46.2 Dark Down 42.6 230.9 Up 10:17:09 - 10:47:09 794
Oregon Observatory 10:32:09 -46.4 Dark Down 42.8 230.9 Up 10:17:09 - 10:47:09 779
La Pine/Gilchrist 10:32:09 -46.5 Dark Down 43.0 231.0 Up 10:17:09 - 10:47:09 760
North Lake 10:32:07 -46.3 Dark Down 42.9 232.0 Up 10:17:07 - 10:47:07 709
Paisley 10:32:06 -46.3 Dark Down 43.0 232.8 Up 10:17:06 - 10:47:06 651
Klamath Falls 10:32:09 -47.3 Dark Down 44.0 231.8 Up 10:17:09 - 10:47:09 621
Lakeview 10:32:05 -46.4 Dark Down 43.2 233.4 Up 10:17:05 - 10:47:05 598
Cedarville 10:32:04 -46.5 Dark Down 43.5 234.0 Up 10:17:04 - 10:47:04 531
Fall River/Burney 10:32:07 -47.5 Dark Down 44.5 233.1 Up 10:17:07 - 10:47:07 499
Susanville 10:32:05 -47.2 Dark Down 44.4 234.4 Up 10:17:05 - 10:47:05 426
Greenville 10:32:06 -47.6 Dark Down 44.8 234.3 Up 10:17:06 - 10:47:06 402
Gimple 10:32:05 -47.5 Dark Down 44.7 234.4 Up 10:17:05 - 10:47:05 401
Quincy 10:32:06 -47.6 Dark Down 44.9 234.5 Up 10:17:06 - 10:47:06 382
Portola 10:32:04 -47.3 Dark Down 44.7 235.1 Up 10:17:04 - 10:47:04 363
Reno 10:32:02 -47.0 Dark Down 44.4 236.0 Up 10:17:02 - 10:47:02 327
Carson City 10:32:02 -47.1 Dark Down 44.6 236.3 Up 10:17:02 - 10:47:02 291
Gardnerville 10:32:02 -47.1 Dark Down 44.7 236.5 Up 10:17:02 - 10:47:02 265
Yerington 10:32:00 -46.7 Dark Down 44.3 237.1 Up 10:17:00 - 10:47:00 263
Niwot 10:31:28 -36.0 Dark Up 34.3 249.1 Up 10:16:28 - 10:46:28 235
SwRI 10:31:28 -36.1 Dark Up 34.4 249.1 Up 10:16:28 - 10:46:28 225
Hawthorne 10:31:59 -46.4 Dark Down 44.2 238.0 Up 10:16:59 - 10:46:59 208
Lee Vining 10:32:00 -46.9 Dark Down 44.8 238.0 Up 10:17:00 - 10:47:00 157
Tonopah 10:31:55 -45.5 Dark Down 43.5 239.8 Up 10:16:55 - 10:46:55 143
Bishop 10:31:58 -46.6 Dark Down 44.7 239.2 Up 10:16:58 - 10:46:58 86
Beatty 10:31:53 -45.4 Dark Down 43.8 241.2 Up 10:16:53 - 10:46:53 17
Indian Springs 10:31:50 -44.7 Dark Down 43.2 242.5 Up 10:16:50 - 10:46:50 -30
Henderson 10:31:48 -44.3 Dark Up 42.9 243.6 Up 10:16:48 - 10:46:48 -94
CPSLO 10:32:03 -48.9 Dark Down 47.3 238.8 Up 10:17:03 - 10:47:03 -95
Searchlight/Boulder City 10:31:48 -44.3 Dark Up 43.1 244.1 Up 10:16:48 - 10:46:48 -154
Patrick 10:31:45 -43.5 Dark Up 42.4 245.1 Up 10:16:45 - 10:46:45 -172
Laughlin/Bullhead City 10:31:46 -44.1 Dark Up 43.0 244.7 Up 10:16:46 - 10:46:46 -190
Kingman/Dolan Springs 10:31:45 -43.7 Dark Up 42.6 245.2 Up 10:16:45 - 10:46:45 -193
DCO 10:31:43 -43.0 Dark Up 42.0 246.0 Up 10:16:43 - 10:46:43 -212
Mohave Valley 10:31:46 -44.2 Dark Up 43.1 244.9 Up 10:16:46 - 10:46:46 -218
Wildwood 10:31:57 -47.6 Dark Down 46.4 241.9 Up 10:16:57 - 10:46:57 -250
Lake Havasu City 10:31:45 -44.0 Dark Up 43.1 245.5 Up 10:16:45 - 10:46:45 -263
Parker 10:31:45 -44.1 Dark Up 43.2 245.8 Up 10:16:45 - 10:46:45 -301
Idyllwild 10:31:52 -46.1 Dark Down 45.2 244.0 Up 10:16:52 - 10:46:52 -313
Blythe 10:31:46 -44.4 Dark Up 43.7 246.0 Up 10:16:46 - 10:46:46 -352
George/Scottsdale 10:31:39 -42.2 Dark Up 41.5 248.2 Up 10:16:39 - 10:46:39 -373
Calipatria 10:31:48 -45.3 Dark Down 44.6 245.6 Up 10:16:48 - 10:46:48 -393
Yuma 10:31:46 -44.6 Dark Up 44.1 246.8 Up 10:16:46 - 10:46:46 -450

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 26308, (2023/11/09 10:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 20.58 112
Menkar         03:02:16.8 +04:05:21  2.5  5.70 136
1Omi Tau       03:24:48.7 +09:01:42  3.6  1.76 130
PPM 146480     03:21:00.8 +08:27:03  8.0  0.69 131
PPM 146453     03:19:40.5 +08:01:02 10.0  0.15 131
26308          03:19:20.1 +07:53:48 13.8       131
Positions are for J2000

Event circumstances last updated at 2019/12/10 23:06:55 UT

Marc W. Buie, Southwest Research Institute

RECON