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 10:34:01 UTC

J2000 position of star is 03:19:20.1 +07:53:48
Equinox of date position of star is 03:20:25.1 +07:58:09
Stellar brightness G=13.8, use SENSEUP=64
Star is 131 degrees from the moon. Moon is 15% illuminated.
TNO apparent brightness V=26.3

[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 202 seconds.
The 1-sigma cross-track error in the shadow position is 2035 km.
The sky-plane scale is 30348.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=478.6 km assuming a 5% albedo -- 2.3 sec chord
Diameter=195.4 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is 2:1E+6:3EII
 
 
 
 
 
 

Star training set for 26308, (2023/11/09 10:34UT)
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 4.5 sigma about the mid-time.
The median site spacing is 22.7 km RECON observability=1.0 and success probability=24.6%
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 10:31:40 -42.3 Dark Down 37.6 229.0 Up 10:16:40 - 10:46:40 1062
Kelowna 10:31:40 -42.6 Dark Down 38.0 229.1 Up 10:16:40 - 10:46:40 1028
Peachland 10:31:40 -42.8 Dark Down 38.2 228.8 Up 10:16:40 - 10:46:40 1021
Summerland 10:31:40 -42.8 Dark Down 38.2 229.0 Up 10:16:40 - 10:46:40 1006
Penticton 10:31:40 -42.8 Dark Down 38.2 229.2 Up 10:16:40 - 10:46:40 999
Oliver 10:31:39 -42.9 Dark Down 38.5 229.4 Up 10:16:39 - 10:46:39 966
Victoria 10:31:48 -45.4 Dark Down 40.8 225.5 Up 10:16:48 - 10:46:48 951
Anarchist Mountain Observatory 10:31:39 -42.9 Dark Down 38.5 229.7 Up 10:16:39 - 10:46:39 948
Tonasket 10:31:39 -43.1 Dark Down 38.7 229.8 Up 10:16:39 - 10:46:39 920
Okanogan 10:31:39 -43.3 Dark Down 39.0 229.8 Up 10:16:39 - 10:46:39 891
Brewster 10:31:39 -43.6 Dark Down 39.3 229.8 Up 10:16:39 - 10:46:39 868
Manson/Chelan 10:31:39 -43.9 Dark Down 39.6 229.5 Up 10:16:39 - 10:46:39 852
Entiat 10:31:39 -44.0 Dark Down 39.8 229.6 Up 10:16:39 - 10:46:39 833
Wenatchee 10:31:40 -44.2 Dark Down 40.0 229.6 Up 10:16:40 - 10:46:40 810
Ellensburg 10:31:40 -44.5 Dark Down 40.4 229.6 Up 10:16:40 - 10:46:40 774
Yakima 10:31:39 -44.7 Dark Down 40.7 229.9 Up 10:16:39 - 10:46:39 735
Toppenish/White Swan 10:31:39 -44.7 Dark Down 40.7 230.2 Up 10:16:39 - 10:46:39 713
Pasco 10:31:36 -44.0 Dark Down 40.1 231.7 Up 10:16:36 - 10:46:36 686
Goldendale 10:31:40 -45.2 Dark Down 41.3 230.1 Up 10:16:40 - 10:46:40 665
PNWRO 10:31:35 -44.0 Dark Down 40.1 232.1 Up 10:16:35 - 10:46:35 659
The Dalles 10:31:40 -45.6 Dark Down 41.6 229.9 Up 10:16:40 - 10:46:40 648
Maupin 10:31:40 -45.7 Dark Down 41.8 230.3 Up 10:16:40 - 10:46:40 607
Sisters 10:31:40 -46.4 Dark Down 42.7 230.3 Up 10:16:40 - 10:46:40 529
Redmond 10:31:39 -46.1 Dark Down 42.5 230.8 Up 10:16:39 - 10:46:39 521
Bend 10:31:39 -46.3 Dark Down 42.7 230.8 Up 10:16:39 - 10:46:39 502
Oregon Observatory 10:31:40 -46.5 Dark Down 42.9 230.8 Up 10:16:40 - 10:46:40 487
La Pine/Gilchrist 10:31:40 -46.6 Dark Down 43.0 230.9 Up 10:16:40 - 10:46:40 468
North Lake 10:31:38 -46.4 Dark Down 43.0 231.8 Up 10:16:38 - 10:46:38 418
Paisley 10:31:37 -46.4 Dark Down 43.1 232.6 Up 10:16:37 - 10:46:37 359
Klamath Falls 10:31:40 -47.4 Dark Down 44.1 231.6 Up 10:16:40 - 10:46:40 330
Lakeview 10:31:36 -46.5 Dark Down 43.3 233.2 Up 10:16:36 - 10:46:36 307
Cedarville 10:31:35 -46.6 Dark Down 43.6 233.9 Up 10:16:35 - 10:46:35 239
Fall River/Burney 10:31:38 -47.6 Dark Down 44.6 233.0 Up 10:16:38 - 10:46:38 208
Susanville 10:31:36 -47.3 Dark Down 44.5 234.3 Up 10:16:36 - 10:46:36 135
Greenville 10:31:36 -47.6 Dark Down 44.9 234.2 Up 10:16:36 - 10:46:36 111
Gimple 10:31:36 -47.6 Dark Down 44.8 234.3 Up 10:16:36 - 10:46:36 110
Quincy 10:31:36 -47.7 Dark Down 45.0 234.3 Up 10:16:36 - 10:46:36 91
Portola 10:31:35 -47.4 Dark Down 44.7 234.9 Up 10:16:35 - 10:46:35 72
Reno 10:31:33 -47.0 Dark Down 44.5 235.8 Up 10:16:33 - 10:46:33 36
Carson City 10:31:33 -47.1 Dark Down 44.7 236.2 Up 10:16:33 - 10:46:33 -1
Gardnerville 10:31:33 -47.2 Dark Down 44.8 236.4 Up 10:16:33 - 10:46:33 -26
Yerington 10:31:31 -46.7 Dark Down 44.4 237.0 Up 10:16:31 - 10:46:31 -29
Niwot 10:30:59 -36.1 Dark Up 34.4 249.0 Up 10:15:59 - 10:45:59 -57
SwRI 10:30:59 -36.2 Dark Up 34.5 249.0 Up 10:15:59 - 10:45:59 -67
Hawthorne 10:31:29 -46.5 Dark Down 44.3 237.9 Up 10:16:29 - 10:46:29 -83
Lee Vining 10:31:30 -47.0 Dark Down 44.9 237.9 Up 10:16:30 - 10:46:30 -134
Tonopah 10:31:25 -45.6 Dark Down 43.6 239.7 Up 10:16:25 - 10:46:25 -149
Bishop 10:31:28 -46.7 Dark Down 44.7 239.1 Up 10:16:28 - 10:46:28 -205
Beatty 10:31:24 -45.5 Dark Down 43.9 241.1 Up 10:16:24 - 10:46:24 -274
Indian Springs 10:31:21 -44.8 Dark Down 43.3 242.4 Up 10:16:21 - 10:46:21 -321
Henderson 10:31:19 -44.4 Dark Up 43.0 243.5 Up 10:16:19 - 10:46:19 -385
CPSLO 10:31:34 -49.0 Dark Down 47.4 238.6 Up 10:16:34 - 10:46:34 -386
Searchlight/Boulder City 10:31:18 -44.4 Dark Up 43.2 244.0 Up 10:16:18 - 10:46:18 -446
Patrick 10:31:15 -43.6 Dark Up 42.5 245.0 Up 10:16:15 - 10:46:15 -464
Laughlin/Bullhead City 10:31:17 -44.2 Dark Up 43.1 244.6 Up 10:16:17 - 10:46:17 -481
Kingman/Dolan Springs 10:31:16 -43.8 Dark Up 42.7 245.0 Up 10:16:16 - 10:46:16 -485
DCO 10:31:13 -43.1 Dark Up 42.1 245.9 Up 10:16:13 - 10:46:13 -504
Mohave Valley 10:31:17 -44.3 Dark Up 43.2 244.8 Up 10:16:17 - 10:46:17 -510
Wildwood 10:31:27 -47.7 Dark Down 46.5 241.8 Up 10:16:27 - 10:46:27 -542
Lake Havasu City 10:31:16 -44.1 Dark Up 43.2 245.4 Up 10:16:16 - 10:46:16 -555
Parker 10:31:16 -44.2 Dark Up 43.3 245.7 Up 10:16:16 - 10:46:16 -592
Idyllwild 10:31:22 -46.2 Dark Down 45.3 243.9 Up 10:16:22 - 10:46:22 -604
Blythe 10:31:16 -44.5 Dark Up 43.8 245.9 Up 10:16:16 - 10:46:16 -644
George/Scottsdale 10:31:09 -42.3 Dark Up 41.6 248.1 Up 10:16:09 - 10:46:09 -665
Calipatria 10:31:19 -45.4 Dark Down 44.7 245.5 Up 10:16:19 - 10:46:19 -684
Yuma 10:31:16 -44.7 Dark Up 44.2 246.7 Up 10:16:16 - 10:46:16 -741

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 10:34UT)
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 2020/03/21 20:47:44 UT

Marc W. Buie, Southwest Research Institute

RECON