RECON: TNO occultation with 00YX1

Event between 00YX1 and star GA1140:01741974 with event index number of 2007503

Geocentric closest approach at 2026/11/19 07:21:22 UTC

J2000 position of star is 06:01:23.6 +25:21:46
Equinox of date position of star is 06:02:46.4 +25:21:42
Stellar brightness G=14.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 68% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 43.4 AU from the Sun and 42.5 AU from the Earth.
The TNO is moving 20.7 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1065 seconds.
The 1-sigma cross-track error in the shadow position is 2291 km.
The sky-plane scale is 30849.6 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=214.8 km assuming a 5% albedo -- 10.4 sec chord
Diameter=87.7 km assuming a 30% albedo -- 4.2 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 00YX1, (2026/11/19 07:21UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.7 +07:24:35  0.4 18.02 101
Alnath         05:27:59.6 +28:37:40  1.6  8.46  95
139 Tau        05:59:39.8 +25:57:16  4.7  0.97 102
PPM 095283     06:04:32.7 +25:52:54  8.3  0.62 103
PPM 095246     06:03:14.7 +25:29:11  9.5  0.13 102
PPM 095232     06:02:50.2 +25:23:09 10.2  0.06 102
00YX1          06:03:03.3 +25:21:41 14.5       103
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 0.8 sigma about the mid-time.
The median site spacing is 28.6 km RECON observability=1.0 and success probability=15.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:23:42 -58.5 Dark Up 49.5 112.9 Up 07:08:42 - 07:38:42 3908
Sleaford 07:22:58 -56.7 Dark Up 56.3 131.9 Up 07:07:58 - 07:37:58 3841
Kelowna 07:23:41 -59.4 Dark Up 50.4 113.0 Up 07:08:41 - 07:38:41 3816
Peachland 07:23:42 -59.5 Dark Up 50.2 112.5 Up 07:08:42 - 07:38:42 3810
Summerland 07:23:42 -59.6 Dark Up 50.3 112.4 Up 07:08:42 - 07:38:42 3795
Penticton 07:23:42 -59.7 Dark Up 50.4 112.5 Up 07:08:42 - 07:38:42 3786
Victoria 07:23:55 -60.1 Dark Up 48.4 107.5 Up 07:08:55 - 07:38:55 3761
Oliver 07:23:43 -60.0 Dark Up 50.6 112.1 Up 07:08:43 - 07:38:43 3753
Anarchist Mountain Observatory 07:23:43 -60.2 Dark Up 50.8 112.1 Up 07:08:43 - 07:38:43 3733
Tonasket 07:23:44 -60.5 Dark Up 50.8 111.7 Up 07:08:44 - 07:38:44 3704
Okanogan 07:23:45 -60.8 Dark Up 50.9 111.2 Up 07:08:45 - 07:38:45 3675
Brewster 07:23:46 -61.1 Dark Up 50.8 110.6 Up 07:08:46 - 07:38:46 3652
Manson/Chelan 07:23:48 -61.2 Dark Up 50.7 110.0 Up 07:08:48 - 07:38:48 3639
Wenatchee 07:23:49 -61.7 Dark Up 50.7 109.3 Up 07:08:49 - 07:38:49 3596
Ellensburg 07:23:51 -62.1 Dark Up 50.7 108.6 Up 07:08:51 - 07:38:51 3560
Yakima 07:23:52 -62.5 Dark Up 50.9 108.1 Up 07:08:52 - 07:38:52 3521
Toppenish/White Swan 07:23:52 -62.7 Dark Up 51.0 108.0 Up 07:08:52 - 07:38:52 3496
Goldendale 07:23:54 -63.2 Dark Up 50.9 107.0 Up 07:08:54 - 07:38:54 3451
The Dalles 07:23:57 -63.3 Dark Up 50.7 106.4 Up 07:08:57 - 07:38:57 3436
PNWRO 07:23:48 -63.2 Dark Up 52.1 109.1 Up 07:08:48 - 07:38:48 3432
Maupin 07:23:57 -63.8 Dark Up 50.9 106.0 Up 07:08:57 - 07:38:57 3393
Sisters 07:24:00 -64.5 Dark Up 50.8 104.5 Up 07:09:00 - 07:39:00 3316
Bend 07:24:00 -64.8 Dark Up 51.1 104.5 Up 07:09:00 - 07:39:00 3287
Oregon Observatory 07:24:00 -64.9 Dark Up 51.0 104.1 Up 07:09:00 - 07:39:00 3273
North Lake 07:24:00 -65.7 Dark Up 51.6 103.8 Up 07:09:00 - 07:39:00 3198
Chiloquin 07:24:05 -66.1 Dark Up 51.0 102.2 Up 07:09:05 - 07:39:05 3150
Klamath Falls 07:24:05 -66.5 Dark Up 51.2 101.8 Up 07:09:05 - 07:39:05 3114
Lakeview 07:24:01 -66.8 Dark Up 52.2 103.0 Up 07:09:01 - 07:39:01 3081
Cedarville 07:24:02 -67.5 Dark Up 52.5 102.4 Up 07:09:02 - 07:39:02 3011
Fall River/Burney 07:24:07 -67.7 Dark Up 51.7 100.7 Up 07:09:07 - 07:39:07 2987
Susanville 07:24:06 -68.4 Dark Up 52.4 100.5 Up 07:09:06 - 07:39:06 2908
Greenville 07:24:07 -68.7 Dark Up 52.2 100.0 Up 07:09:07 - 07:39:07 2886
Gimple 07:24:07 -68.7 Dark Up 52.3 100.0 Up 07:09:07 - 07:39:07 2884
Quincy 07:24:07 -68.8 Dark Up 52.2 99.7 Up 07:09:07 - 07:39:07 2865
Portola 07:24:06 -69.1 Dark Up 52.6 99.9 Up 07:09:06 - 07:39:06 2842
Reno 07:24:05 -69.5 Dark Up 53.1 100.1 Up 07:09:05 - 07:39:05 2801
Carson City 07:24:06 -69.8 Dark Up 53.2 99.6 Up 07:09:06 - 07:39:06 2764
Gardnerville 07:24:06 -70.1 Dark Up 53.3 99.4 Up 07:09:06 - 07:39:06 2738
Yerington 07:24:04 -70.1 Dark Up 53.7 99.9 Up 07:09:04 - 07:39:04 2731
Hawthorne 07:24:04 -70.6 Dark Up 54.2 99.7 Up 07:09:04 - 07:39:04 2672
Dunrhomin 07:23:14 -67.7 Dark Up 63.5 116.1 Up 07:08:14 - 07:38:14 2629
Lee Vining 07:24:06 -71.1 Dark Up 53.9 98.5 Up 07:09:06 - 07:39:06 2624
CU-SBO 07:23:14 -68.0 Dark Up 63.5 115.5 Up 07:08:14 - 07:38:14 2604
Tonopah 07:23:59 -71.3 Dark Up 55.4 100.2 Up 07:08:59 - 07:38:59 2595
Bishop 07:24:05 -71.8 Dark Up 54.6 98.3 Up 07:09:05 - 07:39:05 2546
Beatty 07:24:00 -72.5 Dark Up 55.9 98.9 Up 07:09:00 - 07:39:00 2465
Indian Springs 07:23:57 -72.9 Dark Up 56.8 99.2 Up 07:08:57 - 07:38:57 2409
Henderson 07:23:55 -73.4 Dark Up 57.5 99.0 Up 07:08:55 - 07:38:55 2340
Patrick 07:23:52 -74.1 Dark Up 58.5 98.8 Up 07:08:52 - 07:38:52 2252
Laughlin/Bullhead City 07:23:55 -74.3 Dark Up 57.9 97.9 Up 07:08:55 - 07:38:55 2240
Kingman/Dolan Springs 07:23:53 -74.3 Dark Up 58.3 98.3 Up 07:08:53 - 07:38:53 2232
Mohave Valley 07:23:56 -74.6 Dark Up 58.0 97.5 Up 07:08:56 - 07:38:56 2211
Wildwood 07:24:11 -75.0 Dark Up 54.8 93.6 Up 07:09:11 - 07:39:11 2208
Lake Havasu City 07:23:55 -75.0 Dark Up 58.2 97.0 Up 07:08:55 - 07:38:55 2163
Idyllwild 07:24:05 -75.6 Dark Up 56.4 94.2 Up 07:09:05 - 07:39:05 2130
Parker 07:23:55 -75.3 Dark Up 58.3 96.5 Up 07:08:55 - 07:38:55 2125
Calipatria 07:24:02 -76.3 Dark Up 57.4 94.1 Up 07:09:02 - 07:39:02 2041
George/Scottsdale 07:23:47 -75.6 Dark Up 60.3 97.5 Up 07:08:47 - 07:38:47 2035
Yuma 07:23:59 -76.8 Dark Up 58.1 93.9 Up 07:08:59 - 07:38:59 1977

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 00YX1, (2026/11/19 07:21UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 18.02 101
Alnath         05:26:17.6 +28:36:23  1.6  8.46  95
139 Tau        05:57:59.6 +25:57:14  4.7  0.97 102
PPM 095283     06:02:52.6 +25:53:02  8.3  0.62 103
PPM 095246     06:01:34.9 +25:29:17  9.5  0.13 102
PPM 095232     06:01:10.5 +25:23:14 10.2  0.06 102
00YX1          06:01:23.6 +25:21:46 14.5       102
Positions are for J2000

Event circumstances last updated at 2022/04/24 23:03:21 UT

Marc W. Buie, Southwest Research Institute

RECON