RECON: TNO occultation with 208996

Event between (208996) 03AZ84 and star GA0940:03288136 with event index number of 1513702

Geocentric closest approach at 2026/03/02 05:51:13 UTC

J2000 position of star is 08:44:41.7 +05:30:20
Equinox of date position of star is 08:45:47.9 +05:25:43
Stellar brightness G=15.4, use SENSEUP=128
Star is 19 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=20.2

[RECON map]
TNO is 43.6 AU from the Sun and 42.8 AU from the Earth.
The TNO is moving 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 129 seconds.
The 1-sigma cross-track error in the shadow position is 2325 km.
The sky-plane scale is 31007.6 km/arcsec.

The TNO has an absolute magnitude Hv=3.8
Diameter=1028.1 km assuming a 5% albedo -- 46.0 sec chord
Diameter=419.7 km assuming a 30% albedo -- 18.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 208996, (2026/03/02 05:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:45.9 +11:50:18  1.3 21.65   4
Alphard        09:28:52.4 -08:46:24  2.0 17.75  24
13Rho Hya      08:49:49.0 +05:44:22  4.3  0.99  18
10 Hya         08:46:24.4 +05:35:03  7.0  0.19  19
208996         08:46:04.7 +05:24:33 15.4        19
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 16.1 km RECON observability=1.0 and success probability=10.3%
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 05:52:35 -38.4 Dark Up 45.2 176.8 Up 05:41:18 - 06:03:52 -2440
Kelowna 05:52:35 -38.6 Dark Up 45.6 176.5 Up 05:41:18 - 06:03:52 -2473
Peachland 05:52:35 -38.5 Dark Up 45.7 176.1 Up 05:41:18 - 06:03:52 -2489
Summerland 05:52:35 -38.7 Dark Up 45.8 176.2 Up 05:41:18 - 06:03:52 -2498
Penticton 05:52:35 -38.8 Dark Up 45.9 176.4 Up 05:41:18 - 06:03:52 -2500
Oliver 05:52:34 -39.0 Dark Up 46.3 176.3 Up 05:41:17 - 06:03:51 -2527
Anarchist Mountain Observatory 05:52:35 -39.2 Dark Up 46.5 176.6 Up 05:41:18 - 06:03:52 -2534
Tonasket 05:52:34 -39.4 Dark Up 46.8 176.5 Up 05:41:17 - 06:03:51 -2560
Okanogan 05:52:33 -39.6 Dark Up 47.1 176.2 Up 05:41:16 - 06:03:50 -2590
Brewster 05:52:35 -39.7 Dark Up 47.3 175.9 Up 05:41:18 - 06:03:52 -2617
Manson/Chelan 05:52:35 -39.6 Dark Up 47.5 175.4 Up 05:41:18 - 06:03:52 -2643
Entiat 05:52:35 -39.7 Dark Up 47.8 175.2 Up 05:41:18 - 06:03:52 -2662
Victoria 05:52:45 -37.6 Dark Up 46.6 170.8 Up 05:41:28 - 06:04:02 -2681
Wenatchee 05:52:35 -39.8 Dark Up 48.0 175.1 Up 05:41:18 - 06:03:52 -2685
Ellensburg 05:52:35 -40.0 Dark Up 48.4 174.7 Up 05:41:18 - 06:03:52 -2723
Pasco 05:52:30 -41.2 Dark Up 49.2 176.8 Up 05:41:13 - 06:03:47 -2743
PNWRO 05:52:28 -41.5 Dark Up 49.5 177.1 Up 05:41:11 - 06:03:45 -2756
Yakima 05:52:34 -40.3 Dark Up 48.8 174.6 Up 05:41:17 - 06:03:51 -2756
Toppenish/White Swan 05:52:34 -40.5 Dark Up 49.0 174.9 Up 05:41:17 - 06:03:51 -2769
Niwot 05:51:33 -52.4 Dark Up 53.9 199.8 Up 05:40:16 - 06:02:50 -2804
SwRI 05:51:33 -52.4 Dark Up 54.0 199.7 Up 05:40:16 - 06:02:50 -2816
Goldendale 05:52:34 -40.6 Dark Up 49.5 174.1 Up 05:41:17 - 06:03:51 -2825
The Dalles 05:52:35 -40.6 Dark Up 49.7 173.6 Up 05:41:18 - 06:03:52 -2854
Maupin 05:52:35 -40.9 Dark Up 50.2 173.7 Up 05:41:18 - 06:03:52 -2885
Redmond 05:52:34 -41.4 Dark Up 51.1 173.4 Up 05:41:17 - 06:03:51 -2961
Sisters 05:52:35 -41.2 Dark Up 51.0 172.8 Up 05:41:18 - 06:03:52 -2971
Bend 05:52:34 -41.5 Dark Up 51.3 173.1 Up 05:41:17 - 06:03:51 -2983
Oregon Observatory 05:52:34 -41.5 Dark Up 51.4 172.9 Up 05:41:17 - 06:03:51 -3001
La Pine/Gilchrist 05:52:34 -41.6 Dark Up 51.6 172.8 Up 05:41:17 - 06:03:51 -3020
North Lake 05:52:32 -42.2 Dark Up 52.1 173.7 Up 05:41:15 - 06:03:49 -3039
Paisley 05:52:29 -42.8 Dark Up 52.7 174.2 Up 05:41:12 - 06:03:46 -3074
Lakeview 05:52:29 -43.2 Dark Up 53.2 174.4 Up 05:41:12 - 06:03:46 -3111
Klamath Falls 05:52:34 -42.3 Dark Up 53.0 172.1 Up 05:41:17 - 06:03:51 -3151
Cedarville 05:52:27 -43.7 Dark Up 53.9 174.6 Up 05:41:10 - 06:03:44 -3161
Fall River/Burney 05:52:32 -43.3 Dark Up 54.2 172.5 Up 05:41:15 - 06:03:49 -3240
Susanville 05:52:27 -44.1 Dark Up 54.9 173.6 Up 05:41:10 - 06:03:44 -3272
Gimple 05:52:28 -44.1 Dark Up 55.2 173.2 Up 05:41:11 - 06:03:45 -3302
Greenville 05:52:28 -44.1 Dark Up 55.2 173.1 Up 05:41:11 - 06:03:45 -3305
Portola 05:52:26 -44.5 Dark Up 55.6 173.8 Up 05:41:09 - 06:03:43 -3318
Reno 05:52:23 -45.1 Dark Up 55.9 174.9 Up 05:41:06 - 06:03:40 -3321
Quincy 05:52:28 -44.2 Dark Up 55.4 173.0 Up 05:41:11 - 06:03:45 -3322
Yerington 05:52:20 -45.8 Dark Up 56.5 176.0 Up 05:41:03 - 06:03:37 -3348
Carson City 05:52:23 -45.3 Dark Up 56.2 174.9 Up 05:41:06 - 06:03:40 -3352
Tonopah 05:52:12 -47.6 Dark Up 57.4 179.5 Up 05:40:55 - 06:03:29 -3367
Gardnerville 05:52:22 -45.5 Dark Up 56.5 175.0 Up 05:41:05 - 06:03:39 -3371
Hawthorne 05:52:18 -46.4 Dark Up 56.9 176.9 Up 05:41:01 - 06:03:35 -3372
Lee Vining 05:52:19 -46.5 Dark Up 57.5 176.0 Up 05:41:02 - 06:03:36 -3437
Indian Springs 05:52:05 -49.4 Dark Up 58.9 182.3 Up 05:40:48 - 06:03:22 -3447
Beatty 05:52:09 -48.6 Dark Up 58.6 180.3 Up 05:40:52 - 06:03:26 -3454
Bishop 05:52:15 -47.3 Dark Up 58.1 177.2 Up 05:40:58 - 06:03:32 -3467
Henderson 05:52:01 -50.2 Dark Up 59.4 183.7 Up 05:40:44 - 06:03:18 -3471
Patrick 05:51:55 -51.3 Dark Up 60.0 185.9 Up 05:40:38 - 06:03:12 -3488
DCO 05:51:52 -51.9 Dark Up 60.2 187.4 Up 05:40:35 - 06:03:09 -3491
Kingman/Dolan Springs 05:51:56 -51.3 Dark Up 60.2 185.6 Up 05:40:39 - 06:03:13 -3514
Searchlight/Boulder City 05:51:59 -50.6 Dark Up 60.0 183.9 Up 05:40:42 - 06:03:16 -3519
Laughlin/Bullhead City 05:51:58 -51.0 Dark Up 60.3 184.6 Up 05:40:41 - 06:03:15 -3534
Mohave Valley 05:51:58 -51.2 Dark Up 60.5 184.6 Up 05:40:41 - 06:03:15 -3558
George/Scottsdale 05:51:45 -53.6 Dark Up 61.4 190.4 Up 05:40:28 - 06:03:02 -3569
Lake Havasu City 05:51:56 -51.6 Dark Up 60.9 185.2 Up 05:40:39 - 06:03:13 -3585
Parker 05:51:55 -51.8 Dark Up 61.3 185.3 Up 05:40:38 - 06:03:12 -3616
Blythe 05:51:55 -51.9 Dark Up 61.8 184.8 Up 05:40:38 - 06:03:12 -3673
CPSLO 05:52:20 -46.9 Dark Up 60.0 172.6 Up 05:41:03 - 06:03:37 -3726
Idyllwild 05:52:03 -50.5 Dark Up 61.8 180.4 Up 05:40:46 - 06:03:20 -3735
Calipatria 05:51:58 -51.6 Dark Up 62.4 182.9 Up 05:40:41 - 06:03:15 -3750
Yuma 05:51:53 -52.5 Dark Up 62.7 184.8 Up 05:40:36 - 06:03:10 -3758
Wildwood 05:52:12 -49.0 Dark Up 61.4 176.5 Up 05:40:55 - 06:03:29 -3767

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 208996, (2026/03/02 05:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3 21.65   4
Alphard        09:27:35.2 -08:39:30  2.0 17.75  24
13Rho Hya      08:48:26.0 +05:50:15  4.3  0.99  18
10 Hya         08:45:01.3 +05:40:50  7.0  0.19  19
208996         08:44:41.7 +05:30:20 15.4        19
Positions are for J2000

Event circumstances last updated at 2020/11/20 03:10:50 UT

Marc W. Buie, Southwest Research Institute

RECON