RECON: TNO occultation with 134860

Event between (134860) 00OJ67 and star GA0860:16987358 with event index number of 1785952

Geocentric closest approach at 2026/09/12 10:44:58 UTC

J2000 position of star is 23:40:19.7 -03:20:28
Equinox of date position of star is 23:41:27.6 -03:13:08
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 167 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 43.1 AU from the Sun and 42.1 AU from the Earth.
The TNO is moving 25.0 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 243 seconds.
The 1-sigma cross-track error in the shadow position is 4720 km.
The sky-plane scale is 30531.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=328.1 km assuming a 5% albedo -- 13.1 sec chord
Diameter=133.9 km assuming a 30% albedo -- 5.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 134860, (2026/09/12 10:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:07.1 -29:28:48  1.2 28.16 140
Algenib        00:14:36.8 +15:19:55  2.8 20.24 170
20 Psc         23:49:18.9 -02:36:47  5.5  1.99 169
PPM 207784     23:40:12.0 -02:48:43  8.3  0.53 167
PPM 207830     23:42:01.5 -03:23:54 10.0  0.22 167
134860         23:41:41.9 -03:11:35 14.9       168
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 3.7 sigma about the mid-time.
The median site spacing is 28.1 km RECON observability=1.0 and success probability=2.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:42:10 -24.9 Dark Down 27.6 222.1 Low 10:27:10 - 10:57:10 11662
Kelowna 10:42:08 -25.1 Dark Down 27.8 223.3 Low 10:27:08 - 10:57:08 11573
Peachland 10:42:09 -25.3 Dark Down 28.0 223.1 Low 10:27:09 - 10:57:09 11572
Victoria 10:42:16 -27.8 Dark Down 30.5 219.8 Up 10:27:16 - 10:57:16 11564
Summerland 10:42:06 -25.3 Dark Down 28.1 223.2 Low 10:27:06 - 10:57:06 11557
Penticton 10:42:08 -25.3 Dark Down 28.1 223.4 Low 10:27:08 - 10:57:08 11549
Oliver 10:42:06 -25.6 Dark Down 28.3 223.5 Low 10:27:06 - 10:57:06 11519
Anarchist Mountain Observatory 10:42:07 -25.6 Dark Down 28.4 223.7 Low 10:27:07 - 10:57:07 11500
Tonasket 10:42:08 -25.8 Dark Down 28.6 223.8 Low 10:27:08 - 10:57:08 11476
Sleaford 10:41:46 -17.0 AT Down 19.9 235.5 Really Low 10:26:46 - 10:56:46 11457
Okanogan 10:42:07 -26.1 Dark Down 28.9 223.8 Low 10:27:07 - 10:57:07 11452
Brewster 10:42:08 -26.4 Dark Down 29.2 223.7 Low 10:27:08 - 10:57:08 11434
Manson/Chelan 10:42:08 -26.7 Dark Down 29.6 223.4 Low 10:27:08 - 10:57:08 11426
Wenatchee 10:42:09 -27.1 Dark Down 30.0 223.4 Low 10:27:09 - 10:57:09 11390
Ellensburg 10:42:09 -27.5 Dark Down 30.4 223.3 Up 10:27:09 - 10:57:09 11361
Yakima 10:42:06 -27.8 Dark Down 30.7 223.5 Up 10:27:06 - 10:57:06 11327
Toppenish/White Swan 10:42:06 -27.9 Dark Down 30.8 223.7 Up 10:27:06 - 10:57:06 11304
Goldendale 10:42:06 -28.5 Dark Down 31.4 223.5 Up 10:27:06 - 10:57:06 11268
The Dalles 10:42:09 -28.8 Dark Down 31.7 223.2 Up 10:27:09 - 10:57:09 11258
PNWRO 10:42:04 -27.3 Dark Down 30.3 225.4 Up 10:27:04 - 10:57:04 11232
Maupin 10:42:09 -29.0 Dark Down 32.0 223.5 Up 10:27:09 - 10:57:09 11220
Sisters 10:42:09 -29.9 Dark Down 32.8 223.4 Up 10:27:09 - 10:57:09 11157
Bend 10:42:09 -29.9 Dark Down 32.9 223.8 Up 10:27:09 - 10:57:09 11129
Oregon Observatory 10:42:09 -30.1 Dark Down 33.1 223.7 Up 10:27:09 - 10:57:09 11117
North Lake 10:42:07 -30.2 Dark Down 33.3 224.6 Up 10:27:07 - 10:57:07 11046
Chiloquin 10:42:09 -31.2 Dark Down 34.2 223.9 Up 10:27:09 - 10:57:09 11013
Klamath Falls 10:42:09 -31.4 Dark Down 34.4 224.1 Up 10:27:09 - 10:57:09 10980
Lakeview 10:42:05 -30.6 Dark Down 33.7 225.6 Up 10:27:05 - 10:57:05 10935
Cedarville 10:42:04 -30.9 Dark Down 34.1 226.1 Up 10:27:04 - 10:57:04 10871
Fall River/Burney 10:42:08 -31.9 Dark Down 35.1 225.1 Up 10:27:08 - 10:57:08 10863
Susanville 10:42:05 -31.9 Dark Down 35.1 226.2 Up 10:27:05 - 10:57:05 10784
Greenville 10:42:07 -32.3 Dark Down 35.5 226.0 Up 10:27:07 - 10:57:07 10767
Gimple 10:42:06 -32.2 Dark Down 35.4 226.1 Up 10:27:06 - 10:57:06 10765
Quincy 10:42:06 -32.4 Dark Down 35.6 226.1 Up 10:27:06 - 10:57:06 10749
Portola 10:42:05 -32.2 Dark Down 35.4 226.7 Up 10:27:05 - 10:57:05 10723
Reno 10:42:04 -32.0 Dark Down 35.2 227.5 Up 10:27:04 - 10:57:04 10679
Carson City 10:42:03 -32.2 Dark Down 35.5 227.7 Up 10:27:03 - 10:57:03 10645
Gardnerville 10:42:04 -32.3 Dark Down 35.6 227.9 Up 10:27:04 - 10:57:04 10621
Yerington 10:42:02 -31.9 Dark Down 35.2 228.4 Up 10:27:02 - 10:57:02 10608
Hawthorne 10:42:00 -31.9 Dark Down 35.2 229.2 Up 10:27:00 - 10:57:00 10549
Lee Vining 10:42:02 -32.5 Dark Down 35.9 229.0 Up 10:27:02 - 10:57:02 10511
Tonopah 10:41:57 -31.3 Dark Down 34.7 230.8 Up 10:26:57 - 10:56:57 10463
Bishop 10:42:00 -32.4 Dark Down 35.9 230.0 Up 10:27:00 - 10:57:00 10432
Dunrhomin 10:41:32 -22.2 Dark Down 25.8 240.4 Low 10:26:32 - 10:56:32 10347
Beatty 10:41:55 -31.7 Dark Down 35.1 231.8 Up 10:26:55 - 10:56:55 10339
Indian Springs 10:41:53 -31.1 Dark Down 34.7 233.0 Up 10:26:53 - 10:56:53 10275
Henderson 10:41:52 -31.0 Dark Down 34.5 234.0 Up 10:26:52 - 10:56:52 10203
Wildwood 10:42:00 -34.5 Dark Down 38.1 231.7 Up 10:27:00 - 10:57:00 10125
Patrick 10:41:47 -30.5 Dark Down 34.2 235.3 Up 10:26:47 - 10:56:47 10109
Laughlin/Bullhead City 10:41:50 -31.1 Dark Down 34.8 234.8 Up 10:26:50 - 10:56:50 10106
Kingman/Dolan Springs 10:41:49 -30.8 Dark Down 34.4 235.3 Up 10:26:49 - 10:56:49 10093
Mohave Valley 10:41:49 -31.3 Dark Down 34.9 235.0 Up 10:26:49 - 10:56:49 10079
Lake Havasu City 10:41:49 -31.3 Dark Down 35.0 235.4 Up 10:26:49 - 10:56:49 10032
Idyllwild 10:41:54 -33.4 Dark Down 37.0 233.7 Up 10:26:54 - 10:56:54 10032
Parker 10:41:48 -31.5 Dark Down 35.2 235.7 Up 10:26:48 - 10:56:48 9997
Calipatria 10:41:52 -32.9 Dark Down 36.6 235.2 Up 10:26:52 - 10:56:52 9934
George/Scottsdale 10:41:43 -30.0 Dark Down 33.7 238.0 Up 10:26:43 - 10:56:43 9882
Yuma 10:41:48 -32.5 Dark Down 36.2 236.2 Up 10:26:48 - 10:56:48 9864

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 134860, (2026/09/12 10:48UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 28.16 140
Algenib        00:13:14.2 +15:11:01  2.8 20.24 170
20 Psc         23:47:56.7 -02:45:42  5.5  1.99 169
PPM 207784     23:38:49.8 -02:57:36  8.3  0.53 167
PPM 207830     23:40:39.2 -03:32:47 10.0  0.22 167
134860         23:40:19.7 -03:20:28 14.9       167
Positions are for J2000

Event circumstances last updated at 2022/01/16 23:49:22 UT

Marc W. Buie, Southwest Research Institute

RECON