RECON: TNO occultation with 517717

Event between (517717) 15KZ120 and star GA1540:01800993 with event index number of 2627446

Geocentric closest approach at 2023/03/02 09:56:21 UTC

J2000 position of star is 02:06:41.3 +65:02:11
Equinox of date position of star is 02:08:25.8 +65:08:38
Stellar brightness G=14.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 60 degrees from the moon. Moon is 78% illuminated.
TNO apparent brightness V=21.1

[RECON map]
TNO is 11.3 AU from the Sun and 11.4 AU from the Earth.
The TNO is moving 33.1 km/sec on the sky relative to the star, or, 14.4 arcsec/hr.
The 1-sigma error in the time of the event is 44 seconds.
The 1-sigma cross-track error in the shadow position is 1381 km.
The sky-plane scale is 8264.0 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.7 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 517717, (2023/03/02 09:56UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:13.3 +45:21:51  1.3 46.45 104
37Del Cas      01:27:21.1 +60:21:17  2.7  6.70  65
PPM 013433     02:06:26.2 +65:12:49  6.5  0.22  60
PPM 013478     02:10:32.4 +65:08:47  8.1  0.22  59
517717         02:08:27.7 +65:08:45 14.8        59
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 18.3 km RECON observability=0.4 and success probability=3.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Wildwood 09:55:02 -53.3 Dark Up 10.6 350.9 Really Low 09:50:54 - 09:59:09 4172
Idyllwild 09:54:58 -52.3 Dark Up 10.0 351.7 Really Low 09:50:50 - 09:59:05 4113
Calipatria 09:54:55 -51.9 Dark Up 9.2 352.2 Really Low 09:50:47 - 09:59:02 4080
Lee Vining 09:55:03 -51.0 Dark Up 14.4 350.6 Really Low 09:50:55 - 09:59:10 4078
Bishop 09:55:00 -51.0 Dark Up 13.8 350.9 Really Low 09:50:53 - 09:59:08 4072
Quincy 09:55:07 -50.5 Dark Up 16.6 349.7 Really Low 09:50:59 - 09:59:14 4066
Gardnerville 09:55:04 -50.6 Dark Up 15.5 350.3 Really Low 09:50:56 - 09:59:11 4065
Greenville 09:55:06 -50.3 Dark Up 16.8 349.7 Really Low 09:50:59 - 09:59:14 4058
Carson City 09:55:03 -50.5 Dark Up 15.7 350.2 Really Low 09:50:56 - 09:59:11 4058
Portola 09:55:05 -50.3 Dark Up 16.4 349.9 Really Low 09:50:58 - 09:59:13 4056
Gimple 09:55:06 -50.3 Dark Up 16.8 349.7 Really Low 09:50:59 - 09:59:14 4056
Yuma 09:54:52 -51.6 Dark Up 8.7 352.6 Really Low 09:50:45 - 09:59:00 4053
Reno 09:55:03 -50.2 Dark Up 16.1 350.2 Really Low 09:50:56 - 09:59:11 4046
Yerington 09:55:02 -50.3 Dark Up 15.5 350.5 Really Low 09:50:55 - 09:59:10 4044
Hawthorne 09:55:02 -50.3 Dark Up 14.9 350.7 Really Low 09:50:54 - 09:59:09 4042
Susanville 09:55:06 -50.0 Dark Up 17.1 349.8 Really Low 09:50:59 - 09:59:14 4039
Fall River/Burney 09:55:08 -49.8 Dark Up 17.8 349.5 Really Low 09:51:00 - 09:59:15 4037
Beatty 09:54:57 -50.3 Dark Up 13.1 351.6 Really Low 09:50:50 - 09:59:05 4028
Tonopah 09:54:58 -49.8 Dark Up 14.3 351.3 Really Low 09:50:50 - 09:59:05 4009
Parker 09:54:52 -50.5 Dark Up 10.1 352.7 Really Low 09:50:44 - 09:58:59 4006
Klamath Falls 09:55:08 -49.1 Dark Up 19.0 349.2 Really Low 09:51:00 - 09:59:15 4000
Mohave Valley 09:54:52 -50.2 Dark Up 10.9 352.5 Really Low 09:50:45 - 09:59:00 3999
Lake Havasu City 09:54:52 -50.3 Dark Up 10.5 352.7 Really Low 09:50:44 - 09:58:59 3999
Indian Springs 09:54:54 -49.9 Dark Up 12.7 352.0 Really Low 09:50:47 - 09:59:02 3997
Laughlin/Bullhead City 09:54:51 -50.1 Dark Up 11.1 352.5 Really Low 09:50:44 - 09:58:59 3992
Chiloquin 09:55:08 -48.9 Dark Up 19.3 349.2 Really Low 09:51:01 - 09:59:16 3988
Henderson 09:54:53 -49.8 Dark Up 12.1 352.3 Really Low 09:50:46 - 09:59:01 3985
Cedarville 09:55:05 -48.9 Dark Up 18.1 350.0 Really Low 09:50:57 - 09:59:12 3982
Kingman/Dolan Springs 09:54:51 -49.7 Dark Up 11.1 352.7 Really Low 09:50:44 - 09:58:59 3971
Lakeview 09:55:05 -48.5 Dark Up 18.8 349.8 Really Low 09:50:58 - 09:59:13 3961
Patrick 09:54:50 -49.5 Dark Up 11.3 352.8 Really Low 09:50:43 - 09:58:58 3957
North Lake 09:55:06 -47.9 Dark Up 19.9 349.5 Really Low 09:50:59 - 09:59:14 3933
Oregon Observatory 09:55:07 -47.6 Dark Up 20.6 349.3 Low 09:51:00 - 09:59:15 3920
George/Scottsdale 09:54:46 -49.1 Dark Up 9.4 353.7 Really Low 09:50:38 - 09:58:53 3912
Bend 09:55:07 -47.4 Dark Up 20.7 349.3 Low 09:50:59 - 09:59:14 3909
Sisters 09:55:07 -47.4 Dark Up 21.0 349.2 Low 09:51:00 - 09:59:15 3905
Maupin 09:55:06 -46.5 Dark Up 21.8 349.3 Low 09:50:59 - 09:59:14 3852
The Dalles 09:55:07 -46.2 Dark Up 22.2 349.3 Low 09:50:59 - 09:59:14 3835
Goldendale 09:55:05 -45.8 Dark Up 22.4 349.4 Low 09:50:58 - 09:59:13 3815
Toppenish/White Swan 09:55:05 -45.2 Dark Up 22.9 349.5 Low 09:50:57 - 09:59:12 3777
Yakima 09:55:05 -45.1 Dark Up 23.1 349.4 Low 09:50:57 - 09:59:12 3771
PNWRO 09:55:01 -44.9 Dark Up 22.3 350.2 Low 09:50:54 - 09:59:09 3752
Ellensburg 09:55:05 -44.8 Dark Up 23.5 349.4 Low 09:50:57 - 09:59:12 3752
Victoria 09:55:11 -44.6 Dark Up 25.4 348.0 Low 09:51:03 - 09:59:18 3746
Wenatchee 09:55:05 -44.4 Dark Up 23.9 349.5 Low 09:50:57 - 09:59:12 3725
Manson/Chelan 09:55:04 -43.9 Dark Up 24.3 349.5 Low 09:50:56 - 09:59:11 3697
Brewster 09:55:03 -43.6 Dark Up 24.5 349.7 Low 09:50:56 - 09:59:11 3677
Okanogan 09:55:03 -43.3 Dark Up 24.7 349.7 Low 09:50:56 - 09:59:11 3658
Tonasket 09:55:03 -43.0 Dark Up 25.1 349.8 Low 09:50:56 - 09:59:11 3637
Anarchist Mountain Observatory 09:55:03 -42.7 Dark Up 25.4 349.8 Low 09:50:55 - 09:59:10 3620
Oliver 09:55:03 -42.6 Dark Up 25.5 349.7 Low 09:50:56 - 09:59:11 3615
Penticton 09:55:03 -42.3 Dark Up 25.9 349.6 Low 09:50:56 - 09:59:11 3597
Summerland 09:55:03 -42.3 Dark Up 26.0 349.6 Low 09:50:55 - 09:59:10 3597
Peachland 09:55:03 -42.3 Dark Up 26.1 349.5 Low 09:50:56 - 09:59:11 3592
Kelowna 09:55:03 -42.1 Dark Up 26.2 349.7 Low 09:50:55 - 09:59:10 3578
Kamloops 09:55:04 -41.7 Dark Up 27.1 349.2 Low 09:50:57 - 09:59:12 3558
CU-SBO 09:54:32 -41.3 Dark Up 15.2 356.4 Really Low 09:50:24 - 09:58:39 3445
Dunrhomin 09:54:31 -41.1 Dark Up 15.5 356.4 Really Low 09:50:24 - 09:58:39 3433
Sleaford 09:54:39 -34.6 Dark Up 27.3 355.7 Low 09:50:32 - 09:58:47 3022

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 517717, (2023/03/02 09:56UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 46.45 104
37Del Cas      01:25:49.8 +60:14:06  2.7  6.70  65
PPM 013433     02:04:40.1 +65:06:13  6.5  0.22  60
PPM 013478     02:08:45.4 +65:02:15  8.1  0.22  59
517717         02:06:41.3 +65:02:11 14.8        59
Positions are for J2000

Event circumstances last updated at 2022/10/03 04:22:41 UT

Marc W. Buie, Southwest Research Institute

RECON