RECON: TNO occultation with 12WF37

Event between 12WF37 and star GA0920:00480394 with event index number of 2034931

Geocentric closest approach at 2027/11/29 12:02:56 UTC

J2000 position of star is 04:46:10.6 +03:00:14
Equinox of date position of star is 04:47:25.9 +03:02:45
Stellar brightness G=12.0, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=22.6

[RECON map]
Object is 28.3 AU from the Sun and 27.3 AU from the Earth.
Apparent velocity is 23.9 km/sec on the sky relative to the star, or, 4.3 arcsec/hr.
The 1-sigma error in the time of the event is 133 seconds.
The 1-sigma cross-track error in the shadow position is 1017 km.
The sky-plane scale is 19814.4 km/arcsec.

The object has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.0 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 12WF37, (2027/11/29 11:59UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:15:52.8 -08:10:17  0.1 13.25 145
67Bet Eri      05:09:13.4 -05:03:08  2.8  9.73 148
8Pi 5Ori       04:55:42.5 +02:29:03  3.7  2.09 154
PPM 147941     04:47:44.4 +03:19:04  8.1  0.27 155
PPM 147939     04:47:38.7 +02:53:08  9.0  0.17 154
12WF37         04:47:38.3 +03:03:09 12.0       154
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 32.4 km RECON observability=0.9 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 11:59:48 -24.7 Dark Down 14.2 256.3 Really Low 11:48:15 - 12:11:21 -1462
Kamloops 12:00:03 -33.7 Dark Down 23.1 244.5 Low 11:48:30 - 12:11:36 -1549
Kelowna 12:00:00 -33.2 Dark Down 22.9 245.6 Low 11:48:27 - 12:11:33 -1621
Peachland 12:00:01 -33.4 Dark Down 23.1 245.4 Low 11:48:28 - 12:11:34 -1629
Summerland 12:00:00 -33.4 Dark Down 23.1 245.5 Low 11:48:27 - 12:11:33 -1642
Penticton 11:59:59 -33.3 Dark Down 23.1 245.6 Low 11:48:26 - 12:11:32 -1648
Oliver 11:59:59 -33.3 Dark Down 23.3 245.8 Low 11:48:26 - 12:11:32 -1679
Anarchist Mountain Observatory 11:59:58 -33.2 Dark Down 23.2 246.0 Low 11:48:25 - 12:11:31 -1694
Victoria 12:00:04 -35.9 Dark Down 25.8 242.7 Low 11:48:31 - 12:11:37 -1720
Okanogan 11:59:57 -33.4 Dark Down 23.6 246.1 Low 11:48:24 - 12:11:30 -1749
Brewster 11:59:56 -33.6 Dark Down 23.8 246.0 Low 11:48:23 - 12:11:29 -1772
Manson/Chelan 11:59:57 -33.9 Dark Down 24.2 245.8 Low 11:48:24 - 12:11:30 -1789
Wenatchee 11:59:56 -34.0 Dark Down 24.5 245.8 Low 11:48:23 - 12:11:29 -1830
Ellensburg 11:59:55 -34.2 Dark Down 24.8 245.8 Low 11:48:22 - 12:11:28 -1866
Yakima 11:59:54 -34.2 Dark Down 24.9 246.0 Low 11:48:21 - 12:11:27 -1902
Toppenish/White Swan 11:59:54 -34.1 Dark Down 24.9 246.2 Low 11:48:21 - 12:11:27 -1922
PNWRO 11:59:50 -33.1 Dark Down 24.1 247.6 Low 11:48:17 - 12:11:23 -1961
The Dalles 11:59:53 -34.8 Dark Down 25.7 245.8 Low 11:48:20 - 12:11:26 -1988
Maupin 11:59:52 -34.7 Dark Down 25.8 246.1 Low 11:48:19 - 12:11:25 -2026
Sisters 11:59:52 -35.1 Dark Down 26.5 246.1 Low 11:48:19 - 12:11:25 -2104
Bend 11:59:51 -34.9 Dark Down 26.5 246.4 Low 11:48:18 - 12:11:24 -2127
Oregon Observatory 11:59:50 -35.0 Dark Down 26.6 246.4 Low 11:48:17 - 12:11:23 -2142
Chiloquin 11:59:49 -35.4 Dark Down 27.4 246.7 Low 11:48:16 - 12:11:22 -2262
Klamath Falls 11:59:48 -35.4 Dark Down 27.5 246.9 Low 11:48:15 - 12:11:21 -2295
Cedarville 11:59:47 -34.2 Dark Down 26.7 248.5 Low 11:48:14 - 12:11:20 -2369
Fall River/Burney 11:59:47 -35.1 Dark Down 27.7 247.8 Low 11:48:14 - 12:11:20 -2409
Greenville 11:59:47 -34.8 Dark Down 27.7 248.6 Low 11:48:14 - 12:11:20 -2499
Gimple 11:59:47 -34.7 Dark Down 27.7 248.6 Low 11:48:14 - 12:11:20 -2500
Quincy 11:59:47 -34.8 Dark Down 27.8 248.7 Low 11:48:14 - 12:11:20 -2519
Dunrhomin 11:59:17 -22.9 Dark Down 16.2 260.0 Really Low 11:47:44 - 12:10:50 -2528
Portola 11:59:47 -34.4 Dark Down 27.5 249.1 Low 11:48:14 - 12:11:20 -2534
Nikitin 11:59:17 -22.9 Dark Down 16.2 260.0 Really Low 11:47:44 - 12:10:50 -2546
CU-SBO 11:59:17 -22.9 Dark Down 16.3 260.0 Really Low 11:47:44 - 12:10:50 -2552
Reno 11:59:47 -33.9 Dark Down 27.1 249.7 Low 11:48:14 - 12:11:20 -2566
Carson City 11:59:47 -33.9 Dark Down 27.2 249.9 Low 11:48:14 - 12:11:20 -2602
Gardnerville 11:59:47 -33.9 Dark Down 27.3 250.1 Low 11:48:14 - 12:11:20 -2627
Yerington 11:59:47 -33.4 Dark Down 26.8 250.5 Low 11:48:14 - 12:11:20 -2627
Hawthorne 11:59:47 -33.0 Dark Down 26.6 251.1 Low 11:48:14 - 12:11:20 -2678
Lee Vining 11:59:47 -33.3 Dark Down 27.1 251.0 Low 11:48:14 - 12:11:20 -2731
Bishop 11:59:47 -32.7 Dark Down 26.8 251.9 Low 11:48:14 - 12:11:20 -2800
Beatty 11:59:47 -31.4 Dark Down 25.7 253.2 Low 11:48:14 - 12:11:20 -2865
Patrick 11:59:21 -29.0 Dark Down 23.9 255.8 Low 11:47:48 - 12:10:54 -2989
Laughlin/Bullhead City 11:59:22 -29.6 Dark Down 24.5 255.5 Low 11:47:49 - 12:10:55 -3011
Lake Havasu City 11:59:21 -29.3 Dark Down 24.5 255.9 Low 11:47:48 - 12:10:54 -3080
Wildwood 11:59:47 -32.7 Dark Down 27.9 253.3 Low 11:48:14 - 12:11:20 -3138
George/Scottsdale 11:59:15 -27.2 Dark Down 22.7 257.8 Low 11:47:42 - 12:10:48 -3166
Idyllwild 11:59:47 -31.1 Dark Down 26.5 254.8 Low 11:48:14 - 12:11:20 -3198
Calipatria 11:59:20 -30.1 Dark Down 25.8 255.8 Low 11:47:47 - 12:10:53 -3215
Yuma 11:59:18 -29.3 Dark Down 25.2 256.5 Low 11:47:45 - 12:10:51 -3262

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 12WF37, (2027/11/29 11:59UT)
Object            RA         Dec     mag  sep  mel
Rigel          05:14:32.3 -08:12:06  0.1 13.25 145
67Bet Eri      05:07:50.8 -05:05:13  2.8  9.73 148
8Pi 5Ori       04:54:15.1 +02:26:26  3.7  2.09 154
PPM 147941     04:46:16.6 +03:16:08  8.1  0.27 155
PPM 147939     04:46:11.1 +02:50:13  9.0  0.17 154
12WF37         04:46:10.6 +03:00:14 12.0       154
Positions are for J2000

Event circumstances last updated at 2023/12/17 04:35:01 UT

Marc W. Buie, Southwest Research Institute

RECON