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 10:35:50 UTC

J2000 position of star is 03:19:20.1 +07:53:48
Equinox of date position of star is 03:20:30.5 +07:58:30
Stellar brightness G=13.8, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 131 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=21.8

[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 91 seconds.
The 1-sigma cross-track error in the shadow position is 1607 km.
The sky-plane scale is 30348.0 km/arcsec.

The TNO has an absolute magnitude Hv=5.5
Diameter=478.6 km assuming a 5% albedo -- 18.7 sec chord
Diameter=195.4 km assuming a 30% albedo -- 7.6 sec chord
Dynamical classification is 2:1E+6:3EII
 
 
 
 
 
 

Star training set for 26308, (2023/11/09 10:36UT)
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 5.0 sigma about the mid-time.
The median site spacing is 23.7 km RECON observability=1.0 and success probability=27.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:33:04 -33.6 Dark Up 29.5 242.0 Low 10:24:59 - 10:41:10 2200
Kamloops 10:33:31 -42.4 Dark Down 37.6 228.1 Up 10:25:25 - 10:41:36 2193
Kelowna 10:33:28 -42.3 Dark Down 37.7 229.6 Up 10:25:23 - 10:41:34 2108
Peachland 10:33:29 -42.5 Dark Down 38.0 229.3 Up 10:25:23 - 10:41:34 2101
Summerland 10:33:28 -42.5 Dark Down 38.0 229.5 Up 10:25:23 - 10:41:34 2087
Penticton 10:33:28 -42.5 Dark Down 38.0 229.7 Up 10:25:22 - 10:41:33 2079
Oliver 10:33:28 -42.7 Dark Down 38.2 229.9 Up 10:25:22 - 10:41:33 2047
Victoria 10:33:36 -45.2 Dark Down 40.5 226.0 Up 10:25:30 - 10:41:41 2031
Anarchist Mountain Observatory 10:33:27 -42.6 Dark Down 38.2 230.2 Up 10:25:22 - 10:41:33 2029
Tonasket 10:33:27 -42.8 Dark Down 38.5 230.3 Up 10:25:21 - 10:41:32 2001
Okanogan 10:33:27 -43.1 Dark Down 38.8 230.3 Up 10:25:21 - 10:41:32 1971
Brewster 10:33:27 -43.3 Dark Down 39.0 230.3 Up 10:25:22 - 10:41:33 1948
Manson/Chelan 10:33:28 -43.6 Dark Down 39.4 230.0 Up 10:25:22 - 10:41:33 1933
Wenatchee 10:33:27 -43.9 Dark Down 39.8 230.1 Up 10:25:22 - 10:41:33 1890
Ellensburg 10:33:28 -44.3 Dark Down 40.1 230.1 Up 10:25:22 - 10:41:33 1854
Yakima 10:33:28 -44.5 Dark Down 40.4 230.4 Up 10:25:22 - 10:41:33 1815
Toppenish/White Swan 10:33:27 -44.4 Dark Down 40.5 230.7 Up 10:25:22 - 10:41:33 1793
Pasco 10:33:24 -43.7 Dark Down 39.9 232.2 Up 10:25:18 - 10:41:29 1766
Goldendale 10:33:28 -45.0 Dark Down 41.0 230.6 Up 10:25:22 - 10:41:33 1745
PNWRO 10:33:23 -43.7 Dark Down 39.9 232.6 Up 10:25:18 - 10:41:29 1740
The Dalles 10:33:28 -45.3 Dark Down 41.4 230.4 Up 10:25:23 - 10:41:34 1728
Maupin 10:33:28 -45.4 Dark Down 41.6 230.8 Up 10:25:22 - 10:41:33 1687
Sisters 10:33:28 -46.1 Dark Down 42.4 230.8 Up 10:25:23 - 10:41:34 1609
Redmond 10:33:27 -45.9 Dark Down 42.2 231.3 Up 10:25:22 - 10:41:33 1601
Bend 10:33:28 -46.0 Dark Down 42.4 231.3 Up 10:25:22 - 10:41:33 1582
Oregon Observatory 10:33:28 -46.2 Dark Down 42.6 231.3 Up 10:25:22 - 10:41:33 1567
La Pine/Gilchrist 10:33:27 -46.3 Dark Down 42.8 231.4 Up 10:25:22 - 10:41:33 1548
North Lake 10:33:26 -46.1 Dark Down 42.7 232.3 Up 10:25:21 - 10:41:32 1498
Chiloquin 10:33:28 -47.0 Dark Down 43.7 231.8 Up 10:25:22 - 10:41:33 1444
Paisley 10:33:25 -46.1 Dark Down 42.8 233.1 Up 10:25:19 - 10:41:30 1439
Klamath Falls 10:33:28 -47.1 Dark Down 43.8 232.1 Up 10:25:22 - 10:41:33 1409
Lakeview 10:33:24 -46.1 Dark Down 43.0 233.7 Up 10:25:18 - 10:41:29 1387
Cedarville 10:33:23 -46.3 Dark Down 43.3 234.4 Up 10:25:17 - 10:41:28 1319
Fall River/Burney 10:33:26 -47.3 Dark Down 44.3 233.5 Up 10:25:20 - 10:41:31 1287
Susanville 10:33:23 -47.0 Dark Down 44.2 234.7 Up 10:25:18 - 10:41:29 1214
Greenville 10:33:24 -47.3 Dark Down 44.6 234.7 Up 10:25:19 - 10:41:30 1191
Gimple 10:33:24 -47.3 Dark Down 44.5 234.7 Up 10:25:18 - 10:41:29 1189
Quincy 10:33:24 -47.4 Dark Down 44.7 234.8 Up 10:25:19 - 10:41:30 1170
Portola 10:33:23 -47.1 Dark Down 44.5 235.4 Up 10:25:17 - 10:41:28 1151
Reno 10:33:21 -46.7 Dark Down 44.2 236.3 Up 10:25:16 - 10:41:27 1116
Carson City 10:33:21 -46.8 Dark Down 44.4 236.6 Up 10:25:15 - 10:41:26 1079
Gardnerville 10:33:20 -46.9 Dark Down 44.5 236.9 Up 10:25:15 - 10:41:26 1054
Yerington 10:33:19 -46.4 Dark Down 44.1 237.5 Up 10:25:13 - 10:41:24 1051
Dunrhomin 10:32:47 -35.7 Dark Up 34.0 249.3 Up 10:24:41 - 10:40:52 1040
Hawthorne 10:33:18 -46.2 Dark Down 44.0 238.4 Up 10:25:12 - 10:41:23 997
Lee Vining 10:33:19 -46.7 Dark Down 44.6 238.3 Up 10:25:13 - 10:41:24 946
Tonopah 10:33:13 -45.2 Dark Down 43.3 240.2 Up 10:25:08 - 10:41:19 931
Bishop 10:33:16 -46.3 Dark Down 44.4 239.6 Up 10:25:11 - 10:41:22 875
Beatty 10:33:12 -45.2 Dark Down 43.5 241.5 Up 10:25:06 - 10:41:17 806
Indian Springs 10:33:09 -44.4 Dark Up 42.9 242.8 Up 10:25:03 - 10:41:14 759
Henderson 10:33:07 -44.0 Dark Up 42.7 243.9 Up 10:25:01 - 10:41:12 695
CPSLO 10:33:22 -48.6 Dark Down 47.0 239.1 Up 10:25:16 - 10:41:27 693
Patrick 10:33:03 -43.3 Dark Up 42.1 245.4 Up 10:24:58 - 10:41:09 617
Laughlin/Bullhead City 10:33:05 -43.9 Dark Up 42.8 245.0 Up 10:25:00 - 10:41:11 599
Kingman/Dolan Springs 10:33:04 -43.4 Dark Up 42.4 245.4 Up 10:24:58 - 10:41:09 596
Mohave Valley 10:33:05 -43.9 Dark Up 42.9 245.2 Up 10:24:59 - 10:41:10 570
Wildwood 10:33:16 -47.3 Dark Down 46.2 242.3 Up 10:25:10 - 10:41:21 538
Lake Havasu City 10:33:04 -43.8 Dark Up 42.8 245.8 Up 10:24:59 - 10:41:10 526
Parker 10:33:04 -43.8 Dark Up 43.0 246.1 Up 10:24:59 - 10:41:10 488
Idyllwild 10:33:10 -45.8 Dark Down 44.9 244.3 Up 10:25:05 - 10:41:16 475
Blythe 10:33:05 -44.1 Dark Up 43.4 246.3 Up 10:24:59 - 10:41:10 436
George/Scottsdale 10:32:57 -41.9 Dark Up 41.3 248.5 Up 10:24:52 - 10:41:03 416
Calipatria 10:33:07 -45.0 Dark Up 44.3 245.9 Up 10:25:01 - 10:41:12 396
Yuma 10:33:04 -44.3 Dark Up 43.8 247.1 Up 10:24:59 - 10:41:10 339

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 10:36UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  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 2021/11/15 00:58:49 UT

Marc W. Buie, Southwest Research Institute

RECON