RECON: TNO occultation with 135024

Event between (135024) 01KO76 and star UC4-346-077749 with event index number of 109359

Geocentric closest approach at 2018/04/02 09:38:30 UTC

J2000 position of star is 15:55:00.1 -20:56:45
Equinox of date position of star is 15:56:01.2 -20:59:45
Stellar brightness R=16.4, use SENSEUP=128
Star is 26 degrees from the moon. Moon is 96% illuminated.
TNO apparent brightness V=23.4

[RECON map]
TNO is 44.2 AU from the Sun and 43.5 AU from the Earth.
The TNO is moving 14.8 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 822 seconds.
The 1-sigma cross-track error in the shadow position is 3509 km.
The sky-plane scale is 31546.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=251.2 km assuming a 5% albedo -- 16.9 sec chord
Diameter=102.6 km assuming a 30% albedo -- 6.9 sec chord
Dynamical classification is 7:4EEE
 
 
 
 
 
 

Star training set for 135024, (2018/04/02 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:31.8 -26:28:16  0.9  9.59  35
7Del Sco       16:01:24.9 -22:40:20  2.3  2.08  28
PPM 264922     15:58:44.7 -21:02:05  6.1  0.62  26
PPM 264848     15:55:52.8 -20:52:15  8.0  0.14  26
135024         15:56:04.3 -20:59:54 16.4        26
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 1.1 sigma about the mid-time.
The median site spacing is 11.3 km RECON observability=0.8 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 09:41:20 -31.9 Dark Up 17.4 158.3 Really Low 09:26:20 - 09:56:20 12009
Tonasket 09:41:19 -32.1 Dark Up 17.6 158.3 Really Low 09:26:19 - 09:56:19 11999
Okanogan 09:41:23 -32.4 Dark Up 17.9 158.1 Really Low 09:26:23 - 09:56:23 11980
Brewster 09:41:25 -32.7 Dark Up 18.1 157.9 Really Low 09:26:25 - 09:56:25 11963
Manson/Chelan 09:41:25 -33.0 Dark Up 18.2 157.5 Really Low 09:26:25 - 09:56:25 11945
Entiat 09:41:27 -33.2 Dark Up 18.4 157.5 Really Low 09:26:27 - 09:56:27 11933
Wenatchee 09:41:26 -33.5 Dark Up 18.6 157.3 Really Low 09:26:26 - 09:56:26 11919
Ellensburg 09:41:28 -33.9 Dark Up 18.9 157.1 Really Low 09:26:28 - 09:56:28 11894
Pasco 09:41:22 -34.1 Dark Up 20.0 158.3 Really Low 09:26:22 - 09:56:22 11889
PNWRO 09:41:23 -34.2 Dark Up 20.2 158.5 Low 09:26:23 - 09:56:23 11882
Yakima 09:41:30 -34.3 Dark Up 19.3 157.0 Really Low 09:26:30 - 09:56:30 11873
George/Umatilla 09:41:25 -34.4 Dark Up 20.2 158.1 Low 09:26:25 - 09:56:25 11867
Toppenish/White Swan 09:41:28 -34.4 Dark Up 19.5 157.1 Really Low 09:26:28 - 09:56:28 11866
Niwot 09:40:18 -32.4 Dark Up 28.5 171.3 Low 09:25:18 - 09:55:18 11862
Goldendale 09:41:32 -35.0 Dark Up 19.9 156.7 Really Low 09:26:32 - 09:56:32 11829
The Dalles 09:41:34 -35.3 Dark Up 20.0 156.3 Low 09:26:34 - 09:56:34 11808
Maupin 09:41:33 -35.7 Dark Up 20.4 156.3 Low 09:26:33 - 09:56:33 11789
Madras/Culver 09:41:36 -36.1 Dark Up 20.9 156.2 Low 09:26:36 - 09:56:36 11760
Redmond 09:41:35 -36.5 Dark Up 21.2 156.1 Low 09:26:35 - 09:56:35 11740
Sisters 09:41:38 -36.6 Dark Up 21.1 155.7 Low 09:26:38 - 09:56:38 11732
Bend 09:41:38 -36.7 Dark Up 21.4 156.0 Low 09:26:38 - 09:56:38 11725
Oregon Observatory 09:41:39 -36.9 Dark Up 21.5 155.8 Low 09:26:39 - 09:56:39 11713
La Pine/Gilchrist 09:41:38 -37.1 Dark Up 21.7 155.7 Low 09:26:38 - 09:56:38 11700
North Lake 09:41:36 -37.3 Dark Up 22.3 156.2 Low 09:26:36 - 09:56:36 11691
Paisley 09:41:33 -37.6 Dark Up 22.9 156.5 Low 09:26:33 - 09:56:33 11669
Lakeview 09:41:35 -38.0 Dark Up 23.4 156.6 Low 09:26:35 - 09:56:35 11646
Chiloquin 09:41:41 -38.2 Dark Up 22.6 155.2 Low 09:26:41 - 09:56:41 11630
Cedarville 09:41:34 -38.5 Dark Up 24.0 156.6 Low 09:26:34 - 09:56:34 11612
Klamath Falls 09:41:40 -38.5 Dark Up 22.9 155.2 Low 09:26:40 - 09:56:40 11612
Tulelake 09:41:41 -38.6 Dark Up 23.3 155.5 Low 09:26:41 - 09:56:41 11604
Fall River/Burney 09:41:40 -39.3 Dark Up 24.1 155.4 Low 09:26:40 - 09:56:40 11554
Susanville 09:41:39 -39.6 Dark Up 24.9 156.0 Low 09:26:39 - 09:56:39 11535
Gimple 09:41:39 -39.9 Dark Up 25.1 155.7 Low 09:26:39 - 09:56:39 11513
Greenville 09:41:38 -40.0 Dark Up 25.1 155.6 Low 09:26:38 - 09:56:38 11511
Reno 09:41:33 -40.0 Dark Up 26.0 156.6 Low 09:26:33 - 09:56:33 11505
Portola 09:41:40 -40.0 Dark Up 25.5 156.0 Low 09:26:40 - 09:56:40 11504
Quincy 09:41:38 -40.1 Dark Up 25.3 155.6 Low 09:26:38 - 09:56:38 11499
Yerington 09:41:31 -40.2 Dark Up 26.7 157.1 Low 09:26:31 - 09:56:31 11487
Carson City 09:41:33 -40.3 Dark Up 26.3 156.5 Low 09:26:33 - 09:56:33 11483
Tonopah 09:41:22 -40.1 Dark Up 28.1 158.8 Low 09:26:22 - 09:56:22 11479
Hawthorne 09:41:31 -40.3 Dark Up 27.3 157.6 Low 09:26:31 - 09:56:31 11472
Gardnerville 09:41:35 -40.5 Dark Up 26.5 156.5 Low 09:26:35 - 09:56:35 11470
Lee Vining 09:41:33 -41.0 Dark Up 27.6 157.0 Low 09:26:33 - 09:56:33 11425
Indian Springs 09:41:17 -40.5 Dark Up 29.9 160.1 Low 09:26:17 - 09:56:17 11424
Beatty 09:41:22 -40.8 Dark Up 29.3 159.1 Low 09:26:22 - 09:56:22 11418
Henderson 09:41:12 -40.6 Dark Up 30.6 160.7 Up 09:26:12 - 09:56:12 11406
Bishop 09:41:30 -41.2 Dark Up 28.4 157.6 Low 09:26:30 - 09:56:30 11406
Patrick 09:41:05 -40.5 Dark Up 31.5 161.7 Up 09:26:05 - 09:56:05 11393
DCO 09:41:02 -40.3 Dark Up 31.9 162.4 Up 09:26:02 - 09:56:02 11391
Kingman/Dolan Springs 09:41:08 -40.7 Dark Up 31.6 161.5 Up 09:26:08 - 09:56:08 11374
Searchlight/Boulder City 09:41:12 -41.0 Dark Up 31.2 160.6 Up 09:26:12 - 09:56:12 11371
Lone Pine 09:41:28 -41.7 Dark Up 29.2 157.7 Low 09:26:28 - 09:56:28 11366
Laughlin/Bullhead City 09:41:11 -41.0 Dark Up 31.5 160.9 Up 09:26:11 - 09:56:11 11360
Mohave Valley 09:41:12 -41.2 Dark Up 31.8 160.9 Up 09:26:12 - 09:56:12 11342
Lake Havasu City 09:41:08 -41.4 Dark Up 32.2 161.1 Up 09:26:08 - 09:56:08 11322
Parker 09:41:09 -41.7 Dark Up 32.6 161.0 Up 09:26:09 - 09:56:09 11299
Blythe 09:41:11 -42.2 Dark Up 33.0 160.6 Up 09:26:11 - 09:56:11 11256
CPSLO 09:41:44 -43.9 Dark Up 29.6 154.9 Low 09:26:44 - 09:56:44 11212
Idyllwild 09:41:24 -43.2 Dark Up 32.3 158.5 Up 09:26:24 - 09:56:24 11212
Calipatria 09:41:19 -43.1 Dark Up 33.2 159.5 Up 09:26:19 - 09:56:19 11199
Yuma 09:41:12 -42.9 Dark Up 33.8 160.4 Up 09:26:12 - 09:56:12 11193
Wildwood 09:41:33 -43.9 Dark Up 31.4 156.6 Up 09:26:33 - 09:56:33 11186

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 135024, (2018/04/02 09:39UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.59  35
7Del Sco       16:00:20.0 -22:37:18  2.3  2.08  28
PPM 264922     15:57:40.5 -20:58:59  6.1  0.62  26
PPM 264848     15:54:48.7 -20:49:05  8.0  0.14  26
135024         15:55:00.1 -20:56:45 16.4        26
Positions are for J2000

Event circumstances last updated at 2017/05/18 18:00:45 UT

Marc W. Buie, Southwest Research Institute

RECON