RECON: TNO occultation with 208996

Event between (208996) 03AZ84 and star GA0940:03288136 with event index number of 2177589

Geocentric closest approach at 2026/03/02 05:49:11 UTC

J2000 position of star is 08:44:41.7 +05:30:20
Equinox of date position of star is 08:45:58.8 +05:24:58
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 19 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 43.6 AU from the Sun and 42.8 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 86 seconds.
The 1-sigma cross-track error in the shadow position is 1749 km.
The sky-plane scale is 31007.6 km/arcsec.

The object has an absolute magnitude Hv=3.8
Diameter=1061.7 km assuming a 5% albedo -- 47.9 sec chord
Diameter=433.5 km assuming a 30% albedo -- 19.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 208996, (2026/03/02 05:51UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:45.8 +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 20.1 km RECON observability=1.0 and success probability=1.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:50:00 -41.8 Dark Up 42.6 194.2 Up 05:42:22 - 05:57:37 -2500
Kamloops 05:50:39 -37.4 Dark Up 44.7 174.6 Up 05:43:01 - 05:58:16 -2975
Kelowna 05:50:35 -38.4 Dark Up 45.6 175.8 Up 05:42:58 - 05:58:13 -3013
Peachland 05:50:36 -38.3 Dark Up 45.7 175.4 Up 05:42:59 - 05:58:14 -3029
Summerland 05:50:36 -38.4 Dark Up 45.8 175.5 Up 05:42:59 - 05:58:14 -3038
Penticton 05:50:35 -38.5 Dark Up 45.9 175.6 Up 05:42:58 - 05:58:13 -3040
Oliver 05:50:35 -38.8 Dark Up 46.2 175.6 Up 05:42:58 - 05:58:13 -3067
Anarchist Mountain Observatory 05:50:34 -39.0 Dark Up 46.4 175.9 Up 05:42:56 - 05:58:11 -3075
Okanogan 05:50:34 -39.3 Dark Up 47.1 175.5 Up 05:42:57 - 05:58:12 -3131
Brewster 05:50:35 -39.4 Dark Up 47.3 175.2 Up 05:42:57 - 05:58:12 -3157
Manson/Chelan 05:50:36 -39.4 Dark Up 47.5 174.6 Up 05:42:58 - 05:58:13 -3184
Victoria 05:50:46 -37.3 Dark Up 46.6 170.0 Up 05:43:09 - 05:58:24 -3221
Wenatchee 05:50:35 -39.6 Dark Up 48.0 174.3 Up 05:42:58 - 05:58:13 -3226
Ellensburg 05:50:35 -39.8 Dark Up 48.4 173.9 Up 05:42:58 - 05:58:13 -3264
PNWRO 05:50:29 -41.2 Dark Up 49.4 176.3 Up 05:42:52 - 05:58:07 -3297
Yakima 05:50:35 -40.0 Dark Up 48.8 173.9 Up 05:42:58 - 05:58:13 -3297
Toppenish/White Swan 05:50:34 -40.2 Dark Up 49.0 174.1 Up 05:42:56 - 05:58:11 -3310
Dunrhomin 05:49:34 -52.1 Dark Up 53.8 198.9 Up 05:41:57 - 05:57:12 -3336
Nikitin 05:49:35 -52.2 Dark Up 54.0 199.0 Up 05:41:58 - 05:57:13 -3351
CU-SBO 05:49:35 -52.2 Dark Up 54.1 198.9 Up 05:41:58 - 05:57:13 -3359
The Dalles 05:50:36 -40.3 Dark Up 49.7 172.8 Up 05:42:59 - 05:58:14 -3395
Maupin 05:50:35 -40.6 Dark Up 50.1 172.9 Up 05:42:57 - 05:58:12 -3426
Sisters 05:50:36 -40.9 Dark Up 51.0 172.0 Up 05:42:58 - 05:58:13 -3513
Bend 05:50:35 -41.2 Dark Up 51.2 172.4 Up 05:42:57 - 05:58:12 -3525
Oregon Observatory 05:50:35 -41.2 Dark Up 51.4 172.1 Up 05:42:57 - 05:58:12 -3543
Chiloquin 05:50:35 -41.8 Dark Up 52.6 171.2 Up 05:42:57 - 05:58:12 -3666
Klamath Falls 05:50:34 -42.0 Dark Up 53.0 171.3 Up 05:42:57 - 05:58:12 -3693
Cedarville 05:50:28 -43.4 Dark Up 53.8 173.8 Up 05:42:50 - 05:58:05 -3704
Fall River/Burney 05:50:32 -42.9 Dark Up 54.2 171.6 Up 05:42:54 - 05:58:09 -3782
Gimple 05:50:29 -43.8 Dark Up 55.1 172.4 Up 05:42:51 - 05:58:06 -3845
Greenville 05:50:29 -43.7 Dark Up 55.1 172.2 Up 05:42:51 - 05:58:06 -3847
Portola 05:50:27 -44.2 Dark Up 55.5 173.0 Up 05:42:49 - 05:58:04 -3861
Reno 05:50:24 -44.8 Dark Up 55.8 174.1 Up 05:42:46 - 05:58:01 -3864
Quincy 05:50:29 -43.9 Dark Up 55.3 172.2 Up 05:42:52 - 05:58:07 -3865
Yerington 05:50:22 -45.5 Dark Up 56.4 175.1 Up 05:42:44 - 05:57:59 -3891
Carson City 05:50:24 -45.0 Dark Up 56.2 174.0 Up 05:42:46 - 05:58:01 -3894
Gardnerville 05:50:25 -45.2 Dark Up 56.4 174.1 Up 05:42:47 - 05:58:02 -3914
Hawthorne 05:50:18 -46.1 Dark Up 56.9 176.0 Up 05:42:41 - 05:57:56 -3915
Lee Vining 05:50:19 -46.1 Dark Up 57.5 175.0 Up 05:42:42 - 05:57:57 -3980
Beatty 05:50:11 -48.3 Dark Up 58.6 179.3 Up 05:42:33 - 05:57:48 -3997
Bishop 05:50:16 -47.0 Dark Up 58.1 176.3 Up 05:42:39 - 05:57:54 -4010
Patrick 05:49:57 -51.0 Dark Up 60.0 185.0 Up 05:42:19 - 05:57:34 -4032
Laughlin/Bullhead City 05:50:00 -50.7 Dark Up 60.3 183.6 Up 05:42:23 - 05:57:38 -4078
George/Scottsdale 05:49:46 -53.3 Dark Up 61.5 189.3 Up 05:42:09 - 05:57:24 -4114
Lake Havasu City 05:49:57 -51.3 Dark Up 61.0 184.2 Up 05:42:19 - 05:57:34 -4130
Idyllwild 05:50:04 -50.1 Dark Up 61.8 179.3 Up 05:42:26 - 05:57:41 -4279
Calipatria 05:49:59 -51.3 Dark Up 62.4 181.8 Up 05:42:22 - 05:57:37 -4295
Yuma 05:49:56 -52.1 Dark Up 62.8 183.7 Up 05:42:18 - 05:57:33 -4303
Wildwood 05:50:13 -48.6 Dark Up 61.3 175.5 Up 05:42:35 - 05:57:50 -4311

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        10:08:21.9 +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 2024/04/23 03:23:36 UT

Marc W. Buie, Southwest Research Institute

RECON