RECON: TNO occultation with 517717

Event between (517717) 15KZ120 and star GA1600:02601357 with event index number of 1059853

Geocentric closest approach at 2021/03/02 08:43:00 UTC

J2000 position of star is 21:08:59.7 +70:02:45
Equinox of date position of star is 21:09:11.7 +70:07:54
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 103 degrees from the moon. Moon is 88% illuminated.
TNO apparent brightness V=20.2

[RECON map]
TNO is 9.2 AU from the Sun and 9.4 AU from the Earth.
The TNO is moving 41.8 km/sec on the sky relative to the star, or, 22.2 arcsec/hr.
The 1-sigma error in the time of the event is 8 seconds.
The 1-sigma cross-track error in the shadow position is 339 km.
The sky-plane scale is 6784.9 km/arcsec.

The TNO has an absolute magnitude Hv=10.1
Diameter=57.5 km assuming a 5% albedo -- 1.4 sec chord
Diameter=23.5 km assuming a 30% albedo -- 0.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 517717, (2021/03/02 08:43UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:09.3 +45:21:25  1.3 25.00 106
Alderamin      21:19:05.0 +62:40:33  2.4  7.52 107
PPM 010752     21:06:30.2 +71:31:01  6.3  1.40 102
PPM 010792     21:14:00.4 +70:06:57  7.6  0.41 103
PPM 010763     21:08:14.6 +70:05:46 10.3  0.09 103
517717         21:09:11.8 +70:07:57 15.2       103
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 13.0 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)
Wildwood 08:42:55 -61.7 Dark Up 17.2 11.9 Really Low 08:41:44 - 08:44:05 7067
Calipatria 08:42:48 -61.6 Dark Up 16.8 12.8 Really Low 08:41:37 - 08:43:58 7061
Yuma 08:42:46 -61.7 Dark Up 16.6 13.0 Really Low 08:41:35 - 08:43:56 7061
Idyllwild 08:42:51 -61.5 Dark Up 17.2 12.4 Really Low 08:41:40 - 08:44:01 7059
CPSLO 08:43:00 -61.0 Dark Up 18.1 11.3 Really Low 08:41:49 - 08:44:10 7041
Blythe 08:42:46 -60.8 Dark Up 17.5 13.1 Really Low 08:41:36 - 08:43:57 7034
Parker 08:42:45 -60.2 Dark Up 18.0 13.2 Really Low 08:41:35 - 08:43:56 7013
Lake Havasu City 08:42:46 -59.9 Dark Up 18.4 13.2 Really Low 08:41:36 - 08:43:57 7003
Mohave Valley 08:42:46 -59.7 Dark Up 18.7 13.2 Really Low 08:41:36 - 08:43:57 6993
George/Scottsdale 08:42:41 -59.6 Dark Up 18.1 13.9 Really Low 08:41:30 - 08:43:51 6985
Laughlin/Bullhead City 08:42:47 -59.4 Dark Up 19.0 13.2 Really Low 08:41:36 - 08:43:57 6985
Kingman/Dolan Springs 08:42:46 -59.2 Dark Up 19.1 13.4 Really Low 08:41:36 - 08:43:57 6977
Patrick 08:42:46 -59.0 Dark Up 19.4 13.4 Really Low 08:41:35 - 08:43:56 6967
Henderson 08:42:49 -58.8 Dark Up 19.8 13.1 Really Low 08:41:38 - 08:43:59 6961
Beatty 08:42:53 -58.5 Dark Up 20.3 12.7 Low 08:41:42 - 08:44:03 6953
Bishop 08:42:56 -58.5 Dark Up 20.5 12.2 Low 08:41:46 - 08:44:07 6953
Indian Springs 08:42:50 -58.5 Dark Up 20.2 13.0 Low 08:41:39 - 08:44:00 6952
Lee Vining 08:42:58 -58.1 Dark Up 20.9 12.0 Low 08:41:47 - 08:44:08 6936
Tonopah 08:42:55 -57.6 Dark Up 21.3 12.6 Low 08:41:44 - 08:44:05 6916
Hawthorne 08:42:58 -57.5 Dark Up 21.6 12.2 Low 08:41:47 - 08:44:08 6910
Gardnerville 08:43:00 -57.3 Dark Up 21.8 11.9 Low 08:41:49 - 08:44:10 6902
Yerington 08:42:59 -57.2 Dark Up 21.9 12.1 Low 08:41:48 - 08:44:09 6895
Carson City 08:43:00 -57.1 Dark Up 22.0 11.9 Low 08:41:50 - 08:44:11 6892
Reno 08:43:00 -56.8 Dark Up 22.4 11.9 Low 08:41:50 - 08:44:11 6877
Portola 08:43:02 -56.6 Dark Up 22.5 11.7 Low 08:41:51 - 08:44:12 6870
Quincy 08:43:03 -56.6 Dark Up 22.6 11.6 Low 08:41:53 - 08:44:14 6867
Greenville 08:43:03 -56.4 Dark Up 22.8 11.6 Low 08:41:52 - 08:44:13 6858
Gimple 08:43:03 -56.4 Dark Up 22.8 11.6 Low 08:41:52 - 08:44:13 6858
Susanville 08:43:03 -56.1 Dark Up 23.1 11.7 Low 08:41:52 - 08:44:13 6845
Fall River/Burney 08:43:04 -55.6 Dark Up 23.6 11.5 Low 08:41:54 - 08:44:15 6821
Cedarville 08:43:02 -54.9 Dark Up 24.2 12.0 Low 08:41:52 - 08:44:13 6793
Klamath Falls 08:43:06 -54.4 Dark Up 24.7 11.5 Low 08:41:55 - 08:44:16 6769
Lakeview 08:43:03 -54.3 Dark Up 24.9 12.0 Low 08:41:52 - 08:44:13 6764
Paisley 08:43:03 -53.8 Dark Up 25.3 12.0 Low 08:41:53 - 08:44:14 6742
North Lake 08:43:05 -53.3 Dark Up 25.8 11.9 Low 08:41:54 - 08:44:15 6717
La Pine/Gilchrist 08:43:06 -53.0 Dark Up 26.2 11.7 Low 08:41:55 - 08:44:16 6698
Oregon Observatory 08:43:06 -52.8 Dark Up 26.4 11.8 Low 08:41:55 - 08:44:16 6688
Bend 08:43:06 -52.6 Dark Up 26.5 11.9 Low 08:41:55 - 08:44:16 6679
Sisters 08:43:06 -52.4 Dark Up 26.7 11.8 Low 08:41:56 - 08:44:17 6668
Redmond 08:43:05 -52.4 Dark Up 26.8 11.9 Low 08:41:55 - 08:44:16 6667
Maupin 08:43:06 -51.5 Dark Up 27.7 12.1 Low 08:41:55 - 08:44:16 6621
Dunrhomin 08:42:33 -51.2 Dark Up 25.8 16.5 Low 08:41:23 - 08:43:44 6607
The Dalles 08:43:06 -51.1 Dark Up 28.1 12.1 Low 08:41:55 - 08:44:16 6599
Goldendale 08:43:06 -50.8 Dark Up 28.3 12.2 Low 08:41:55 - 08:44:16 6586
PNWRO 08:43:02 -50.3 Dark Up 28.8 12.9 Low 08:41:52 - 08:44:13 6565
Toppenish/White Swan 08:43:05 -50.2 Dark Up 28.9 12.4 Low 08:41:54 - 08:44:15 6554
Pasco 08:43:03 -50.1 Dark Up 29.0 12.9 Low 08:41:52 - 08:44:13 6553
Yakima 08:43:05 -50.0 Dark Up 29.1 12.4 Low 08:41:55 - 08:44:16 6544
Ellensburg 08:43:06 -49.6 Dark Up 29.5 12.5 Low 08:41:55 - 08:44:16 6522
Wenatchee 08:43:05 -49.2 Dark Up 30.0 12.6 Low 08:41:55 - 08:44:16 6498
Manson/Chelan 08:43:05 -48.7 Dark Up 30.5 12.7 Up 08:41:55 - 08:44:16 6470
Brewster 08:43:05 -48.4 Dark Up 30.7 12.9 Up 08:41:54 - 08:44:15 6456
Victoria 08:43:12 -48.4 Dark Up 30.6 11.6 Up 08:42:01 - 08:44:22 6445
Okanogan 08:43:05 -48.1 Dark Up 31.0 13.0 Up 08:41:54 - 08:44:15 6440
Tonasket 08:43:04 -47.8 Dark Up 31.4 13.1 Up 08:41:54 - 08:44:15 6420
Anarchist Mountain Observatory 08:43:05 -47.5 Dark Up 31.7 13.1 Up 08:41:54 - 08:44:15 6402
Oliver 08:43:05 -47.3 Dark Up 31.8 13.1 Up 08:41:54 - 08:44:15 6393
Penticton 08:43:05 -47.0 Dark Up 32.2 13.1 Up 08:41:55 - 08:44:16 6372
Summerland 08:43:06 -46.9 Dark Up 32.2 13.1 Up 08:41:55 - 08:44:16 6369
Peachland 08:43:06 -46.8 Dark Up 32.3 13.1 Up 08:41:55 - 08:44:16 6361
Kelowna 08:43:05 -46.6 Dark Up 32.5 13.2 Up 08:41:55 - 08:44:16 6353
Clarence Fulton 08:43:05 -46.2 Dark Up 32.9 13.3 Up 08:41:55 - 08:44:16 6328

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, (2021/03/02 08:43UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 25.00 106
Alderamin      21:18:35.2 +62:35:09  2.4  7.52 107
PPM 010752     21:06:23.1 +71:25:52  6.3  1.40 102
PPM 010792     21:13:47.1 +70:01:39  7.6  0.41 103
PPM 010763     21:08:02.6 +70:00:35 10.3  0.09 103
517717         21:08:59.7 +70:02:45 15.2       103
Positions are for J2000

Event circumstances last updated at 2020/12/22 00:23:36 UT

Marc W. Buie, Southwest Research Institute

RECON