RECON: TNO occultation with 612352

Event between (612352) 02GY32 and star GA0680:08785797 with event index number of 2813461

Geocentric closest approach at 2027/06/15 06:51:07 UTC

J2000 position of star is 17:02:30.1 -21:48:53
Equinox of date position of star is 17:03:50.5 -21:50:43
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 36 degrees from the moon. Moon is 87% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 37.2 AU from the Sun and 36.2 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 646 seconds.
The 1-sigma cross-track error in the shadow position is 1777 km.
The sky-plane scale is 26243.0 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=198.6 km assuming a 5% albedo -- 8.2 sec chord
Diameter=81.1 km assuming a 30% albedo -- 3.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 612352, (2027/06/15 06:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.7 -26:29:26  0.9  8.85  29
35Eta Oph      17:11:57.3 -15:45:25  2.6  6.37  39
PPM 266403     17:07:50.3 -21:36:00  6.3  0.89  37
PPM 266258     17:02:08.1 -21:30:04  7.6  0.58  36
PPM 266335     17:05:26.4 -21:33:46  9.1  0.42  36
612352         17:04:08.8 -21:51:08 15.8        37
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 1.4 sigma about the mid-time.
The median site spacing is 15.5 km RECON observability=0.8 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 06:51:20 -14.6 AT Up 16.0 184.5 Really Low 06:36:20 - 07:06:20 11139
Kamloops 06:52:00 -14.4 AT Up 17.0 170.6 Really Low 06:37:00 - 07:07:00 10976
Kelowna 06:51:57 -15.4 AT Up 17.9 171.4 Really Low 06:36:57 - 07:06:57 10957
Peachland 06:51:58 -15.4 AT Up 18.0 171.2 Really Low 06:36:58 - 07:06:58 10950
Summerland 06:51:59 -15.6 AT Up 18.1 171.2 Really Low 06:36:59 - 07:06:59 10945
Penticton 06:51:58 -15.7 AT Up 18.2 171.3 Really Low 06:36:58 - 07:06:58 10944
Oliver 06:51:58 -16.0 AT Up 18.6 171.3 Really Low 06:36:58 - 07:06:58 10931
Anarchist Mountain Observatory 06:51:58 -16.2 AT Up 18.8 171.5 Really Low 06:36:58 - 07:06:58 10927
Tonasket 06:51:59 -16.5 AT Up 19.1 171.4 Really Low 06:36:59 - 07:06:59 10914
Okanogan 06:51:58 -16.8 AT Up 19.4 171.3 Really Low 06:36:58 - 07:06:58 10899
Brewster 06:51:59 -17.0 AT Up 19.6 171.1 Really Low 06:36:59 - 07:06:59 10886
Manson/Chelan 06:52:00 -17.1 AT Up 19.8 170.7 Really Low 06:37:00 - 07:07:00 10873
Victoria 06:52:10 -15.9 AT Up 18.8 167.6 Really Low 06:37:10 - 07:07:10 10858
Wenatchee 06:52:01 -17.6 AT Up 20.2 170.5 Low 06:37:01 - 07:07:01 10852
Ellensburg 06:52:02 -17.9 AT Up 20.6 170.3 Low 06:37:02 - 07:07:02 10832
Yakima 06:52:02 -18.3 Dark Up 21.0 170.2 Low 06:37:02 - 07:07:02 10815
PNWRO 06:51:57 -19.2 Dark Up 21.8 171.8 Low 06:36:57 - 07:06:57 10810
Toppenish/White Swan 06:52:01 -18.5 Dark Up 21.2 170.4 Low 06:37:01 - 07:07:01 10808
Goldendale 06:52:04 -19.0 Dark Up 21.7 169.9 Low 06:37:04 - 07:07:04 10779
The Dalles 06:52:04 -19.1 Dark Up 21.9 169.5 Low 06:37:04 - 07:07:04 10764
Maupin 06:52:04 -19.5 Dark Up 22.3 169.6 Low 06:37:04 - 07:07:04 10746
Sisters 06:52:06 -20.3 Dark Up 23.1 169.1 Low 06:37:06 - 07:07:06 10700
Bend 06:52:06 -20.6 Dark Up 23.4 169.3 Low 06:37:06 - 07:07:06 10693
Oregon Observatory 06:52:06 -20.7 Dark Up 23.6 169.1 Low 06:37:06 - 07:07:06 10683
Dunrhomin 06:51:12 -26.4 Dark Up 27.7 185.6 Low 06:36:12 - 07:06:12 10662
North Lake 06:52:04 -21.4 Dark Up 24.3 169.6 Low 06:37:04 - 07:07:04 10659
CU-SBO 06:51:13 -26.7 Dark Up 28.0 185.5 Low 06:36:13 - 07:06:13 10648
Lakeview 06:52:04 -22.6 Dark Up 25.4 170.1 Low 06:37:04 - 07:07:04 10615
Chiloquin 06:52:08 -21.9 Dark Up 24.8 168.6 Low 06:37:08 - 07:07:08 10613
Klamath Falls 06:52:08 -22.2 Dark Up 25.2 168.7 Low 06:37:08 - 07:07:08 10597
Cedarville 06:52:03 -23.2 Dark Up 26.1 170.2 Low 06:37:03 - 07:07:03 10584
Fall River/Burney 06:52:07 -23.4 Dark Up 26.4 168.9 Low 06:37:07 - 07:07:07 10542
Susanville 06:52:05 -24.2 Dark Up 27.1 169.6 Low 06:37:05 - 07:07:05 10519
Gimple 06:52:06 -24.4 Dark Up 27.3 169.4 Low 06:37:06 - 07:07:06 10501
Greenville 06:52:06 -24.4 Dark Up 27.3 169.3 Low 06:37:06 - 07:07:06 10500
Portola 06:52:05 -24.8 Dark Up 27.7 169.8 Low 06:37:05 - 07:07:05 10489
Quincy 06:52:06 -24.6 Dark Up 27.5 169.3 Low 06:37:06 - 07:07:06 10489
Reno 06:52:03 -25.2 Dark Up 28.1 170.4 Low 06:37:03 - 07:07:03 10484
Carson City 06:52:02 -25.5 Dark Up 28.4 170.4 Low 06:37:02 - 07:07:02 10464
Yerington 06:52:01 -25.9 Dark Up 28.7 171.1 Low 06:37:01 - 07:07:01 10462
Gardnerville 06:52:02 -25.8 Dark Up 28.7 170.4 Low 06:37:02 - 07:07:02 10452
Hawthorne 06:51:59 -26.4 Dark Up 29.2 171.6 Low 06:36:59 - 07:06:59 10443
Tonopah 06:51:54 -27.2 Dark Up 29.8 173.0 Low 06:36:54 - 07:06:54 10435
Lee Vining 06:52:00 -26.9 Dark Up 29.7 171.0 Low 06:37:00 - 07:07:00 10405
Bishop 06:51:57 -27.6 Dark Up 30.4 171.7 Up 06:36:57 - 07:06:57 10380
Beatty 06:51:53 -28.4 Dark Up 31.0 173.4 Up 06:36:53 - 07:06:53 10374
Indian Springs 06:51:48 -28.9 Dark Up 31.4 174.5 Up 06:36:48 - 07:06:48 10368
Henderson 06:51:45 -29.6 Dark Up 32.0 175.3 Up 06:36:45 - 07:06:45 10344
Patrick 06:51:41 -30.4 Dark Up 32.7 176.4 Up 06:36:41 - 07:06:41 10320
Kingman/Dolan Springs 06:51:42 -30.5 Dark Up 32.9 176.2 Up 06:36:42 - 07:06:42 10304
Laughlin/Bullhead City 06:51:44 -30.5 Dark Up 32.9 175.7 Up 06:36:44 - 07:06:44 10296
Mohave Valley 06:51:44 -30.7 Dark Up 33.2 175.6 Up 06:36:44 - 07:06:44 10280
Lake Havasu City 06:51:43 -31.2 Dark Up 33.6 175.9 Up 06:36:43 - 07:06:43 10258
Parker 06:51:43 -31.5 Dark Up 33.9 175.9 Up 06:36:43 - 07:06:43 10237
George/Scottsdale 06:51:34 -32.3 Dark Up 34.5 178.6 Up 06:36:34 - 07:06:34 10236
Idyllwild 06:51:52 -31.5 Dark Up 34.2 173.2 Up 06:36:52 - 07:06:52 10183
Wildwood 06:51:59 -30.7 Dark Up 33.6 171.2 Up 06:36:59 - 07:06:59 10180
Calipatria 06:51:47 -32.3 Dark Up 34.9 174.5 Up 06:36:47 - 07:06:47 10158
Yuma 06:51:45 -32.9 Dark Up 35.4 175.5 Up 06:36:45 - 07:06:45 10141

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 612352, (2027/06/15 06:51UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  8.85  29
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.37  39
PPM 266403     17:06:11.8 -21:33:54  6.3  0.89  37
PPM 266258     17:00:29.7 -21:27:44  7.6  0.58  36
PPM 266335     17:03:47.9 -21:31:34  9.1  0.42  36
612352         17:02:30.1 -21:48:53 15.8        36
Positions are for J2000

Event circumstances last updated at 2022/05/08 23:11:31 UT

Marc W. Buie, Southwest Research Institute

RECON