RECON: TNO occultation with 136204

Event between (136204) 03WL7 and star GA0920:03769878 with event index number of 2746734

Geocentric closest approach at 2029/04/10 07:58:51 UTC

J2000 position of star is 11:46:36.0 +03:12:30
Equinox of date position of star is 11:47:50.9 +03:04:23
Stellar brightness G=11.4, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 11% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 19.8 AU from the Sun and 18.9 AU from the Earth.
Apparent velocity is 20.8 km/sec on the sky relative to the star, or, 5.5 arcsec/hr.
The 1-sigma error in the time of the event is 90 seconds.
The 1-sigma cross-track error in the shadow position is 1456 km.
The sky-plane scale is 13705.9 km/arcsec.

The object has an absolute magnitude Hv=8.7
Diameter=110.2 km assuming a 5% albedo -- 5.2 sec chord
Diameter=45.0 km assuming a 30% albedo -- 2.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 136204, (2029/04/10 07:58UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:55.8 +11:49:23  1.3 25.84 167
Denebola       11:50:33.3 +14:24:31  2.1 11.38 161
5Bet Vir       11:52:12.9 +01:36:01  3.6  1.77 164
PPM 158195     11:48:16.7 +03:18:41  8.4  0.27 165
PPM 158200     11:48:31.5 +02:57:02 11.2  0.14 165
136204         11:48:06.1 +03:02:44 11.4       165
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 17.4 km RECON observability=1.0 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:58:22 -28.7 Dark Down 32.8 224.1 Up 07:50:21 - 08:06:23 6582
Kamloops 07:58:57 -31.2 Dark Down 39.2 208.3 Up 07:50:56 - 08:06:58 6194
Kelowna 07:58:52 -32.0 Dark Down 39.6 209.7 Up 07:50:51 - 08:06:53 6165
Peachland 07:58:52 -32.2 Dark Down 39.8 209.3 Up 07:50:51 - 08:06:53 6151
Summerland 07:58:52 -32.3 Dark Down 39.9 209.5 Up 07:50:51 - 08:06:53 6144
Penticton 07:58:52 -32.4 Dark Down 39.9 209.7 Up 07:50:51 - 08:06:53 6142
Oliver 07:58:50 -32.7 Dark Down 40.2 209.8 Up 07:50:49 - 08:06:51 6120
Anarchist Mountain Observatory 07:58:50 -32.9 Dark Down 40.3 210.1 Up 07:50:49 - 08:06:51 6115
Okanogan 07:58:48 -33.5 Dark Down 41.0 210.1 Up 07:50:47 - 08:06:49 6068
Brewster 07:58:47 -33.8 Dark Down 41.3 210.0 Up 07:50:46 - 08:06:48 6046
Manson/Chelan 07:58:48 -34.0 Dark Down 41.6 209.6 Up 07:50:47 - 08:06:49 6024
Wenatchee 07:58:48 -34.5 Dark Down 42.0 209.6 Up 07:50:47 - 08:06:49 5989
Victoria 07:59:01 -33.3 Dark Down 42.0 205.3 Up 07:51:00 - 08:07:02 5988
Ellensburg 07:58:48 -34.9 Dark Down 42.5 209.5 Up 07:50:47 - 08:06:49 5957
PNWRO 07:58:40 -35.9 Dark Down 42.8 212.0 Up 07:50:39 - 08:06:41 5931
Yakima 07:58:47 -35.3 Dark Down 42.8 209.7 Up 07:50:46 - 08:06:48 5929
Toppenish/White Swan 07:58:46 -35.5 Dark Down 43.0 210.0 Up 07:50:45 - 08:06:47 5919
Dunrhomin 07:57:40 -40.0 Dark Down 40.5 231.2 Up 07:49:39 - 08:05:41 5880
Nikitin 07:57:40 -40.1 Dark Down 40.6 231.3 Up 07:49:39 - 08:05:41 5867
CU-SBO 07:57:40 -40.2 Dark Down 40.7 231.3 Up 07:49:39 - 08:05:41 5860
The Dalles 07:58:46 -36.3 Dark Down 43.9 209.3 Up 07:50:45 - 08:06:47 5846
Maupin 07:58:44 -36.7 Dark Down 44.2 209.6 Up 07:50:43 - 08:06:45 5820
Sisters 07:58:45 -37.6 Dark Down 45.2 209.4 Up 07:50:44 - 08:06:46 5747
Bend 07:58:43 -37.8 Dark Down 45.3 209.9 Up 07:50:42 - 08:06:44 5737
Oregon Observatory 07:58:42 -38.0 Dark Down 45.5 209.8 Up 07:50:41 - 08:06:43 5721
Chiloquin 07:58:41 -39.3 Dark Down 46.8 209.9 Up 07:50:40 - 08:06:42 5616
Klamath Falls 07:58:40 -39.6 Dark Down 47.1 210.2 Up 07:50:39 - 08:06:41 5593
Cedarville 07:58:32 -40.4 Dark Down 47.0 212.7 Up 07:50:31 - 08:06:33 5585
Fall River/Burney 07:58:36 -40.8 Dark Down 47.9 211.4 Up 07:50:35 - 08:06:37 5516
Gimple 07:58:32 -41.7 Dark Down 48.5 212.6 Up 07:50:31 - 08:06:33 5462
Greenville 07:58:32 -41.7 Dark Down 48.5 212.5 Up 07:50:31 - 08:06:33 5460
Portola 07:58:29 -42.1 Dark Down 48.6 213.3 Up 07:50:28 - 08:06:30 5448
Reno 07:58:25 -42.4 Dark Down 48.6 214.4 Up 07:50:24 - 08:06:26 5446
Quincy 07:58:32 -41.9 Dark Down 48.7 212.6 Up 07:50:31 - 08:06:33 5445
Yerington 07:58:23 -42.9 Dark Down 48.7 215.6 Up 07:50:22 - 08:06:24 5422
Carson City 07:58:25 -42.7 Dark Down 48.8 214.6 Up 07:50:24 - 08:06:26 5419
Gardnerville 07:58:24 -43.0 Dark Down 49.0 214.8 Up 07:50:23 - 08:06:25 5402
Hawthorne 07:58:19 -43.4 Dark Down 48.9 216.6 Up 07:50:18 - 08:06:20 5401
Lee Vining 07:58:19 -43.9 Dark Down 49.5 216.3 Up 07:50:18 - 08:06:20 5344
Beatty 07:58:09 -44.9 Dark Down 49.2 220.2 Up 07:50:08 - 08:06:10 5326
Bishop 07:58:15 -44.5 Dark Down 49.7 217.7 Up 07:50:14 - 08:06:16 5317
Patrick 07:57:54 -46.2 Dark Down 48.8 225.0 Up 07:49:53 - 08:05:55 5290
Laughlin/Bullhead City 07:57:56 -46.5 Dark Down 49.4 224.3 Up 07:49:55 - 08:05:57 5251
George/Scottsdale 07:57:41 -47.6 Dark Down 48.8 228.8 Up 07:49:40 - 08:05:42 5212
Lake Havasu City 07:57:54 -47.2 Dark Down 49.7 225.2 Up 07:49:53 - 08:05:55 5204
Idyllwild 07:58:01 -48.1 Dark Down 51.6 222.8 Up 07:50:00 - 08:06:02 5075
Calipatria 07:57:55 -48.6 Dark Down 51.4 224.8 Up 07:49:54 - 08:05:56 5058
Wildwood 07:58:08 -47.8 Dark Down 52.4 219.9 Up 07:50:07 - 08:06:09 5049
Yuma 07:57:49 -49.0 Dark Down 51.2 226.3 Up 07:49:48 - 08:05:50 5049

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 136204, (2029/04/10 07:58UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 25.84 167
Denebola       11:49:02.8 +14:34:17  2.1 11.38 161
5Bet Vir       11:50:42.8 +01:45:47  3.6  1.77 164
PPM 158195     11:46:46.6 +03:28:27  8.4  0.27 165
PPM 158200     11:47:01.4 +03:06:48 11.2  0.14 165
136204         11:46:36.0 +03:12:30 11.4       165
Positions are for J2000

Event circumstances last updated at 2024/04/24 02:59:08 UT

Marc W. Buie, Southwest Research Institute

RECON