RECON: TNO occultation with 508869

Event between (508869) 02VT130 and star GA1140:01803649 with event index number of 1631080

Geocentric closest approach at 2026/11/26 03:33:40 UTC

J2000 position of star is 06:04:18.9 +24:30:13
Equinox of date position of star is 06:05:44.0 +24:30:03
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 6 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 43.3 AU from the Sun and 42.5 AU from the Earth.
Apparent velocity is 22.4 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 267 seconds.
The 1-sigma cross-track error in the shadow position is 1939 km.
The sky-plane scale is 30788.0 km/arcsec.

The object has an absolute magnitude Hv=5.8
Diameter=436.5 km assuming a 5% albedo -- 18.2 sec chord
Diameter=178.2 km assuming a 30% albedo -- 7.4 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 508869, (2026/11/26 03:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:37.7 +07:24:35  0.4 17.24  21
Alnath         05:27:59.7 +28:37:40  1.6  9.44   3
1 Gem          06:05:45.4 +23:15:34  4.2  1.24   7
PPM 095328     06:05:51.9 +25:26:26  8.2  0.94   6
PPM 095358     06:06:48.3 +24:20:27  9.0  0.25   7
PPM 095318     06:05:39.8 +24:43:43 10.7  0.24   6
508869         06:05:58.0 +24:30:01 15.9         7
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 3.4 sigma about the mid-time.
The median site spacing is 15.0 km RECON observability=0.1 and success probability=5.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 03:36:43 -33.0 Dark Up 17.4 72.3 Really Low 03:21:43 - 03:51:43 -3039
Victoria 03:36:51 -31.3 Dark Up 14.8 69.6 Really Low 03:21:51 - 03:51:51 -3088
Peachland 03:36:47 -33.5 Dark Up 17.5 72.5 Really Low 03:21:47 - 03:51:47 -3118
Kelowna 03:36:47 -33.7 Dark Up 17.7 72.7 Really Low 03:21:47 - 03:51:47 -3119
Summerland 03:36:47 -33.6 Dark Up 17.5 72.5 Really Low 03:21:47 - 03:51:47 -3130
Penticton 03:36:48 -33.7 Dark Up 17.6 72.6 Really Low 03:21:48 - 03:51:48 -3138
Oliver 03:36:49 -33.7 Dark Up 17.5 72.5 Really Low 03:21:49 - 03:51:49 -3162
Anarchist Mountain Observatory 03:36:50 -33.9 Dark Up 17.5 72.6 Really Low 03:21:50 - 03:51:50 -3179
Okanogan 03:36:51 -33.8 Dark Up 17.2 72.2 Really Low 03:21:51 - 03:51:51 -3216
Brewster 03:36:53 -33.7 Dark Up 17.0 72.0 Really Low 03:21:53 - 03:51:53 -3229
Manson/Chelan 03:36:54 -33.5 Dark Up 16.7 71.7 Really Low 03:21:54 - 03:51:54 -3231
Wenatchee 03:36:55 -33.4 Dark Up 16.4 71.5 Really Low 03:21:55 - 03:51:55 -3259
Ellensburg 03:36:56 -33.3 Dark Up 16.2 71.2 Really Low 03:21:56 - 03:51:56 -3280
Yakima 03:36:58 -33.3 Dark Up 16.0 71.1 Really Low 03:21:58 - 03:51:58 -3308
Toppenish/White Swan 03:36:59 -33.5 Dark Up 16.1 71.1 Really Low 03:21:59 - 03:51:59 -3329
Sleaford 03:36:34 -41.4 Dark Up 26.5 83.4 Low 03:21:34 - 03:51:34 -3355
The Dalles 03:37:02 -33.0 Dark Up 15.3 70.4 Really Low 03:22:02 - 03:52:02 -3358
Maupin 03:37:03 -33.1 Dark Up 15.2 70.4 Really Low 03:22:03 - 03:52:03 -3392
PNWRO 03:37:01 -34.6 Dark Up 16.9 72.0 Really Low 03:22:01 - 03:52:01 -3403
Sisters 03:37:06 -32.8 Dark Up 14.6 69.8 Really Low 03:22:06 - 03:52:06 -3438
Bend 03:37:06 -33.0 Dark Up 14.7 70.0 Really Low 03:22:06 - 03:52:06 -3464
Oregon Observatory 03:37:07 -32.9 Dark Up 14.6 69.8 Really Low 03:22:07 - 03:52:07 -3472
Chiloquin 03:37:11 -32.6 Dark Up 13.8 69.3 Really Low 03:22:11 - 03:52:11 -3555
Klamath Falls 03:37:13 -32.7 Dark Up 13.8 69.2 Really Low 03:22:13 - 03:52:13 -3583
Fall River/Burney 03:37:17 -33.0 Dark Up 13.6 69.2 Really Low 03:22:17 - 03:52:17 -3686
Cedarville 03:37:16 -33.9 Dark Up 14.7 70.1 Really Low 03:22:16 - 03:52:16 -3691
Greenville 03:37:19 -33.4 Dark Up 13.6 69.3 Really Low 03:22:19 - 03:52:19 -3771
Gimple 03:37:19 -33.4 Dark Up 13.7 69.3 Really Low 03:22:19 - 03:52:19 -3774
Quincy 03:37:20 -33.4 Dark Up 13.6 69.2 Really Low 03:22:20 - 03:52:20 -3787
Portola 03:37:20 -33.7 Dark Up 13.9 69.5 Really Low 03:22:20 - 03:52:20 -3814
Reno 03:37:21 -34.2 Dark Up 14.2 69.8 Really Low 03:22:21 - 03:52:21 -3858
Carson City 03:37:22 -34.2 Dark Up 14.1 69.7 Really Low 03:22:22 - 03:52:22 -3887
Gardnerville 03:37:24 -34.3 Dark Up 14.1 69.7 Really Low 03:22:24 - 03:52:24 -3908
Yerington 03:37:23 -34.7 Dark Up 14.5 70.0 Really Low 03:22:23 - 03:52:23 -3925
Hawthorne 03:37:24 -35.2 Dark Up 14.8 70.2 Really Low 03:22:24 - 03:52:24 -3982
Lee Vining 03:37:26 -34.8 Dark Up 14.2 69.8 Really Low 03:22:26 - 03:52:26 -4009
Bishop 03:37:28 -35.4 Dark Up 14.6 70.1 Really Low 03:22:28 - 03:52:28 -4085
Beatty 03:37:29 -36.7 Dark Up 15.6 70.8 Really Low 03:22:29 - 03:52:29 -4183
Dunrhomin 03:37:13 -45.3 Dark Up 25.2 78.3 Low 03:22:13 - 03:52:13 -4312
Nikitin 03:37:14 -45.3 Dark Up 25.2 78.3 Low 03:22:14 - 03:52:14 -4327
CU-SBO 03:37:14 -45.3 Dark Up 25.1 78.2 Low 03:22:14 - 03:52:14 -4330
Wildwood 03:37:37 -35.1 Dark Up 13.3 69.2 Really Low 03:22:37 - 03:52:37 -4350
Laughlin/Bullhead City 03:37:33 -38.4 Dark Up 16.8 71.5 Really Low 03:22:33 - 03:52:33 -4411
Patrick 03:37:32 -39.0 Dark Up 17.4 71.9 Really Low 03:22:32 - 03:52:32 -4417
Idyllwild 03:37:38 -36.7 Dark Up 14.6 70.1 Really Low 03:22:38 - 03:52:38 -4453
Lake Havasu City 03:37:35 -38.7 Dark Up 16.8 71.4 Really Low 03:22:35 - 03:52:35 -4479
Calipatria 03:37:39 -37.6 Dark Up 15.4 70.5 Really Low 03:22:39 - 03:52:39 -4552
Yuma 03:37:40 -38.4 Dark Up 15.9 70.8 Really Low 03:22:40 - 03:52:40 -4624
George/Scottsdale 03:37:36 -40.7 Dark Up 18.5 72.4 Really Low 03:22:36 - 03:52:36 -4640

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 508869, (2026/11/26 03:38UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.24  21
Alnath         05:26:17.6 +28:36:23  1.6  9.44   3
1 Gem          06:04:07.2 +23:15:46  4.2  1.24   7
PPM 095328     06:04:12.1 +25:26:37  8.2  0.94   6
PPM 095358     06:05:09.3 +24:20:41  9.0  0.25   7
PPM 095318     06:04:00.5 +24:43:55 10.7  0.24   6
508869         06:04:18.9 +24:30:13 15.9         6
Positions are for J2000

Event circumstances last updated at 2023/01/30 03:36:19 UT

Marc W. Buie, Southwest Research Institute

RECON