RECON: TNO occultation with 12JD68

Event between 12JD68 and star GA0940:05308179 with event index number of 1557801

Geocentric closest approach at 2024/03/09 10:38:31 UTC

J2000 position of star is 17:42:48.5 +05:03:34
Equinox of date position of star is 17:43:51.0 +05:03:03
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 75 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 28.0 AU from the Sun and 28.0 AU from the Earth.
The TNO is moving 17.8 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 224 seconds.
The 1-sigma cross-track error in the shadow position is 5286 km.
The sky-plane scale is 20335.3 km/arcsec.

The TNO has an absolute magnitude Hv=8.1
Diameter=141.3 km assuming a 5% albedo -- 7.9 sec chord
Diameter=57.7 km assuming a 30% albedo -- 3.2 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 12JD68, (2024/03/09 10:39UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:45.4 +38:48:26  0.0 35.89  76
60Bet Oph      17:44:40.1 +04:33:32  2.8  0.52  75
62Gam Oph      17:49:06.4 +02:42:00  3.8  2.67  73
PPM 164438     17:43:07.8 +04:21:24  8.0  0.73  75
PPM 164464     17:44:00.0 +04:48:38  9.9  0.24  75
PPM 164474     17:44:38.4 +04:56:19 11.4  0.19  75
12JD68         17:44:00.0 +05:02:59 15.8        75
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 4.0 sigma about the mid-time.
The median site spacing is 3.4 km RECON observability=1.0 and success probability=3.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Chiloquin 10:39:25 -40.4 Dark Down 25.2 107.4 Low 10:24:25 - 10:54:25 5969
Klamath Falls 10:39:23 -40.6 Dark Down 25.3 107.3 Low 10:24:23 - 10:54:23 5967
Victoria 10:39:57 -37.1 Dark Down 22.4 108.8 Low 10:24:57 - 10:54:57 5965
Fall River/Burney 10:39:16 -41.2 Dark Down 25.9 107.1 Low 10:24:16 - 10:54:16 5955
La Pine/Gilchrist 10:39:30 -39.5 Dark Down 25.1 108.2 Low 10:24:30 - 10:54:30 5951
Sisters 10:39:34 -39.1 Dark Down 24.9 108.4 Low 10:24:34 - 10:54:34 5949
Oregon Observatory 10:39:31 -39.3 Dark Down 25.1 108.4 Low 10:24:31 - 10:54:31 5947
Bend 10:39:32 -39.1 Dark Down 25.1 108.5 Low 10:24:32 - 10:54:32 5941
Greenville 10:39:11 -41.5 Dark Down 26.5 107.0 Low 10:24:11 - 10:54:11 5938
Quincy 10:39:07 -41.6 Dark Down 26.6 106.8 Low 10:24:07 - 10:54:07 5938
Gimple 10:39:10 -41.4 Dark Down 26.6 107.0 Low 10:24:10 - 10:54:10 5935
Redmond 10:39:35 -38.9 Dark Down 25.1 108.8 Low 10:24:35 - 10:54:35 5934
North Lake 10:39:29 -39.4 Dark Down 25.6 108.5 Low 10:24:29 - 10:54:29 5931
Susanville 10:39:11 -41.1 Dark Down 26.6 107.3 Low 10:24:11 - 10:54:11 5927
The Dalles 10:39:41 -38.0 Dark Down 24.7 109.4 Low 10:24:41 - 10:54:41 5925
Maupin 10:39:40 -38.3 Dark Down 24.9 109.3 Low 10:24:40 - 10:54:40 5924
Portola 10:39:07 -41.4 Dark Down 26.9 107.1 Low 10:24:07 - 10:54:07 5919
Paisley 10:39:25 -39.6 Dark Down 26.1 108.5 Low 10:24:25 - 10:54:25 5919
Lakeview 10:39:21 -39.8 Dark Down 26.3 108.4 Low 10:24:21 - 10:54:21 5914
Goldendale 10:39:44 -37.7 Dark Down 24.9 109.8 Low 10:24:44 - 10:54:44 5910
Cedarville 10:39:18 -40.1 Dark Down 26.7 108.2 Low 10:24:18 - 10:54:18 5908
CPSLO 10:38:41 -44.2 Dark Down 27.9 104.7 Low 10:23:41 - 10:53:41 5902
Yakima 10:39:48 -37.0 Dark Down 24.8 110.3 Low 10:24:48 - 10:54:48 5893
Reno 10:39:09 -41.1 Dark Down 27.5 107.5 Low 10:24:09 - 10:54:09 5893
Carson City 10:39:04 -41.4 Dark Down 27.6 107.3 Low 10:24:04 - 10:54:04 5891
Toppenish/White Swan 10:39:50 -37.1 Dark Down 25.0 110.4 Low 10:24:50 - 10:54:50 5889
Ellensburg 10:39:51 -36.7 Dark Down 24.7 110.5 Low 10:24:51 - 10:54:51 5888
Gardnerville 10:39:04 -41.5 Dark Down 27.7 107.3 Low 10:24:04 - 10:54:04 5888
Wenatchee 10:39:53 -36.4 Dark Down 24.7 110.9 Low 10:24:53 - 10:54:53 5876
Manson/Chelan 10:39:58 -35.9 Dark Down 24.6 111.3 Low 10:24:58 - 10:54:58 5865
Yerington 10:39:04 -41.1 Dark Down 28.1 107.7 Low 10:24:04 - 10:54:04 5864
Lee Vining 10:39:00 -41.6 Dark Down 28.5 107.2 Low 10:24:00 - 10:54:00 5859
Brewster 10:39:58 -35.6 Dark Down 24.8 111.7 Low 10:24:58 - 10:54:58 5849
Pasco 10:39:48 -36.5 Dark Down 25.9 111.4 Low 10:24:48 - 10:54:48 5844
Hawthorne 10:39:02 -41.0 Dark Down 28.7 107.9 Low 10:24:02 - 10:54:02 5840
Okanogan 10:40:01 -35.3 Dark Down 24.8 112.0 Low 10:25:01 - 10:55:01 5839
PNWRO 10:39:50 -36.5 Dark Down 26.1 111.5 Low 10:24:50 - 10:54:50 5838
Tonasket 10:40:02 -35.0 Dark Down 24.8 112.2 Low 10:25:02 - 10:55:02 5829
Oliver 10:40:05 -34.8 Dark Down 24.5 112.4 Low 10:25:05 - 10:55:05 5827
Peachland 10:40:07 -34.5 Dark Down 24.2 112.4 Low 10:25:07 - 10:55:07 5826
Summerland 10:40:07 -34.5 Dark Down 24.3 112.4 Low 10:25:07 - 10:55:07 5825
Anarchist Mountain Observatory 10:40:05 -34.8 Dark Down 24.7 112.5 Low 10:25:05 - 10:55:05 5824
Bishop 10:38:55 -41.5 Dark Down 29.2 107.4 Low 10:23:55 - 10:53:55 5823
Penticton 10:40:09 -34.5 Dark Down 24.4 112.5 Low 10:25:09 - 10:55:09 5822
Kelowna 10:40:10 -34.3 Dark Down 24.4 112.7 Low 10:25:10 - 10:55:10 5815
Clarence Fulton 10:40:12 -33.9 Dark Down 24.3 113.0 Low 10:25:12 - 10:55:12 5803
Wildwood 10:38:38 -43.5 Dark Down 29.9 105.4 Low 10:23:38 - 10:53:38 5801
Tonopah 10:39:02 -40.3 Dark Down 29.9 108.7 Low 10:24:02 - 10:54:02 5777
Beatty 10:38:55 -40.7 Dark Down 30.6 108.4 Up 10:23:55 - 10:53:55 5747
Idyllwild 10:38:38 -42.3 Dark Down 31.5 106.5 Up 10:23:38 - 10:53:38 5711
Indian Springs 10:38:56 -40.1 Dark Down 31.5 109.0 Up 10:23:56 - 10:53:56 5695
Henderson 10:38:53 -39.9 Dark Down 32.2 109.2 Up 10:23:53 - 10:53:53 5657
Calipatria 10:38:35 -41.7 Dark Down 32.6 107.0 Up 10:23:35 - 10:53:35 5644
Laughlin/Bullhead City 10:38:50 -40.0 Dark Down 32.8 109.0 Up 10:23:50 - 10:53:50 5627
Mohave Valley 10:38:49 -40.1 Dark Down 32.9 108.8 Up 10:23:49 - 10:53:49 5623
Blythe 10:38:41 -40.8 Dark Down 33.2 108.0 Up 10:23:41 - 10:53:41 5606
Lake Havasu City 10:38:45 -40.2 Dark Down 33.2 108.7 Up 10:23:45 - 10:53:45 5606
Kingman/Dolan Springs 10:38:51 -39.6 Dark Down 33.2 109.4 Up 10:23:51 - 10:53:51 5603
Parker 10:38:43 -40.3 Dark Down 33.3 108.5 Up 10:23:43 - 10:53:43 5599
Patrick 10:38:50 -39.4 Dark Down 33.2 109.7 Up 10:23:50 - 10:53:50 5596
Yuma 10:38:35 -41.2 Dark Down 33.5 107.4 Up 10:23:35 - 10:53:35 5594
George/Scottsdale 10:38:43 -38.7 Dark Down 35.4 110.1 Up 10:23:43 - 10:53:43 5471
Dunrhomin 10:39:35 -31.0 Dark Down 37.6 120.4 Up 10:24:35 - 10:54:35 5207

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 12JD68, (2024/03/09 10:39UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 35.89  76
60Bet Oph      17:43:28.3 +04:34:06  2.8  0.52  75
62Gam Oph      17:47:53.5 +02:42:25  3.8  2.67  73
PPM 164438     17:41:55.9 +04:22:01  8.0  0.73  75
PPM 164464     17:42:48.4 +04:49:13  9.9  0.24  75
PPM 164474     17:43:26.8 +04:56:53 11.4  0.19  75
12JD68         17:42:48.5 +05:03:34 15.8        75
Positions are for J2000

Event circumstances last updated at 2021/02/17 19:52:10 UT

Marc W. Buie, Southwest Research Institute

RECON