RECON: TNO occultation with 208996

Event between (208996) 03AZ84 and star GA0940:03471646 with event index number of 2717693

Geocentric closest approach at 2029/03/13 07:59:06 UTC

J2000 position of star is 08:57:25.4 +04:12:04
Equinox of date position of star is 08:58:41.8 +04:06:22
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon. Moon is 3% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 43.2 AU from the Sun and 42.4 AU from the Earth.
Apparent velocity is 20.3 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 117 seconds.
The 1-sigma cross-track error in the shadow position is 1833 km.
The sky-plane scale is 30759.9 km/arcsec.

The object has an absolute magnitude Hv=3.8
Diameter=1061.7 km assuming a 5% albedo -- 52.9 sec chord
Diameter=433.5 km assuming a 30% albedo -- 21.6 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 208996, (2029/03/13 08:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.5 +11:49:24  1.3 19.19 175
Alphard        09:29:01.3 -08:47:12  2.0 14.90 161
PPM 155117     08:53:56.6 +05:13:44  6.5  1.69 160
PPM 155224     08:58:08.9 +04:07:23  7.6  0.20 161
208996         08:58:57.1 +04:05:14 16.4       161
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 11.3 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:58:35 -39.8 Dark Down 26.5 239.5 Low 07:48:22 - 08:08:48 9012
Kamloops 07:58:59 -42.0 Dark Down 34.5 225.7 Up 07:48:46 - 08:09:12 8590
Kelowna 07:58:52 -42.9 Dark Down 34.6 227.0 Up 07:48:39 - 08:09:05 8577
Peachland 07:58:54 -43.0 Dark Down 34.9 226.8 Up 07:48:41 - 08:09:07 8564
Summerland 07:58:53 -43.1 Dark Down 34.9 227.0 Up 07:48:40 - 08:09:06 8560
Penticton 07:58:54 -43.2 Dark Down 34.9 227.1 Up 07:48:41 - 08:09:07 8560
Oliver 07:58:52 -43.5 Dark Down 35.2 227.3 Up 07:48:39 - 08:09:05 8543
Anarchist Mountain Observatory 07:58:51 -43.7 Dark Down 35.2 227.6 Up 07:48:38 - 08:09:04 8541
Okanogan 07:58:49 -44.4 Dark Down 35.7 227.7 Up 07:48:36 - 08:09:02 8503
Dunrhomin 07:57:41 -51.0 Dark Down 31.7 245.8 Up 07:47:28 - 08:07:54 8498
Nikitin 07:57:40 -51.2 Dark Down 31.8 245.9 Up 07:47:27 - 08:07:53 8487
Brewster 07:58:48 -44.6 Dark Down 36.0 227.6 Up 07:48:35 - 08:09:01 8484
CU-SBO 07:57:40 -51.3 Dark Down 31.8 245.9 Up 07:47:27 - 08:07:53 8481
Manson/Chelan 07:58:49 -44.8 Dark Down 36.3 227.3 Up 07:48:36 - 08:09:02 8462
Wenatchee 07:58:47 -45.3 Dark Down 36.7 227.4 Up 07:48:34 - 08:09:00 8434
Ellensburg 07:58:46 -45.7 Dark Down 37.1 227.4 Up 07:48:33 - 08:08:59 8406
PNWRO 07:58:37 -46.7 Dark Down 37.0 229.7 Up 07:48:24 - 08:08:50 8404
Victoria 07:58:59 -44.0 Dark Down 37.4 223.5 Up 07:48:46 - 08:09:12 8398
Yakima 07:58:45 -46.1 Dark Down 37.4 227.6 Up 07:48:32 - 08:08:58 8384
Toppenish/White Swan 07:58:43 -46.3 Dark Down 37.5 227.9 Up 07:48:30 - 08:08:56 8378
The Dalles 07:58:42 -47.0 Dark Down 38.4 227.5 Up 07:48:29 - 08:08:55 8312
Maupin 07:58:40 -47.5 Dark Down 38.6 227.8 Up 07:48:27 - 08:08:53 8293
Sisters 07:58:38 -48.3 Dark Down 39.5 227.8 Up 07:48:25 - 08:08:51 8229
Bend 07:58:35 -48.6 Dark Down 39.5 228.2 Up 07:48:22 - 08:08:48 8224
Oregon Observatory 07:58:36 -48.7 Dark Down 39.7 228.2 Up 07:48:23 - 08:08:49 8210
Chiloquin 07:58:31 -50.0 Dark Down 40.8 228.5 Up 07:48:18 - 08:08:44 8120
Cedarville 07:58:24 -51.1 Dark Down 40.6 231.0 Up 07:48:11 - 08:08:37 8114
Klamath Falls 07:58:31 -50.3 Dark Down 41.0 228.8 Up 07:48:18 - 08:08:44 8103
Fall River/Burney 07:58:26 -51.5 Dark Down 41.6 230.0 Up 07:48:13 - 08:08:39 8044
Gimple 07:58:20 -52.5 Dark Down 41.8 231.2 Up 07:48:07 - 08:08:33 8006
Reno 07:58:14 -53.1 Dark Down 41.6 232.7 Up 07:48:01 - 08:08:27 8005
Greenville 07:58:22 -52.5 Dark Down 41.9 231.1 Up 07:48:09 - 08:08:35 8004
Portola 07:58:19 -52.8 Dark Down 41.8 231.9 Up 07:48:06 - 08:08:32 8000
Yerington 07:58:10 -53.7 Dark Down 41.5 233.8 Up 07:47:57 - 08:08:23 7992
Quincy 07:58:20 -52.7 Dark Down 42.0 231.3 Up 07:48:07 - 08:08:33 7991
Carson City 07:58:14 -53.5 Dark Down 41.8 233.0 Up 07:48:01 - 08:08:27 7983
Hawthorne 07:58:08 -54.2 Dark Down 41.5 234.6 Up 07:47:55 - 08:08:21 7981
Gardnerville 07:58:12 -53.8 Dark Down 41.9 233.2 Up 07:47:59 - 08:08:25 7969
Patrick 07:57:43 -57.2 Dark Down 40.0 241.4 Up 07:47:30 - 08:07:56 7940
Beatty 07:57:58 -55.9 Dark Down 41.2 237.7 Up 07:47:45 - 08:08:11 7940
Lee Vining 07:58:08 -54.8 Dark Down 42.1 234.5 Up 07:47:55 - 08:08:21 7929
Bishop 07:58:02 -55.4 Dark Down 42.0 235.7 Up 07:47:49 - 08:08:15 7915
Laughlin/Bullhead City 07:57:42 -57.5 Dark Down 40.6 240.9 Up 07:47:29 - 08:07:55 7900
George/Scottsdale 07:57:28 -58.7 Dark Down 39.3 244.4 Up 07:47:15 - 08:07:41 7895
Lake Havasu City 07:57:39 -58.2 Dark Down 40.7 241.7 Up 07:47:26 - 08:07:52 7864
Idyllwild 07:57:42 -59.0 Dark Down 42.8 240.1 Up 07:47:29 - 08:07:55 7731
Yuma 07:57:33 -60.0 Dark Down 41.8 242.8 Up 07:47:20 - 08:07:46 7730
Calipatria 07:57:38 -59.6 Dark Down 42.3 241.6 Up 07:47:25 - 08:07:51 7729
Wildwood 07:57:51 -58.6 Dark Down 44.0 238.0 Up 07:47:38 - 08:08:04 7688

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, (2029/03/13 08:00UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 19.19 175
Alphard        09:27:35.2 -08:39:30  2.0 14.90 161
PPM 155117     08:52:24.2 +05:20:25  6.5  1.69 160
PPM 155224     08:56:37.0 +04:14:12  7.6  0.20 161
208996         08:57:25.4 +04:12:04 16.4       161
Positions are for J2000

Event circumstances last updated at 2024/04/24 02:58:06 UT

Marc W. Buie, Southwest Research Institute

RECON