RECON: TNO occultation with 471136

Event between (471136) 10EO65 and star UC4-287-131413 with event index number of 329435

Geocentric closest approach at 2020/05/05 10:33:25 UTC

J2000 position of star is 17:50:04.6 -32:40:57
Equinox of date position of star is 17:51:21.0 -32:41:13
Stellar brightness R=16.1, use SENSEUP=128
Star is 72 degrees from the moon. Moon is 94% illuminated.
TNO apparent brightness V=21.4

[RECON map]
TNO is 15.0 AU from the Sun and 14.2 AU from the Earth.
The TNO is moving 12.8 km/sec on the sky relative to the star, or, 4.5 arcsec/hr.
The 1-sigma error in the time of the event is 743 seconds.
The 1-sigma cross-track error in the shadow position is 1181 km.
The sky-plane scale is 10327.1 km/arcsec.

The TNO has an absolute magnitude Hv=9.5
Diameter=75.9 km assuming a 5% albedo -- 5.9 sec chord
Diameter=31.0 km assuming a 30% albedo -- 2.4 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471136, (2020/05/05 10:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.5 -26:28:32  0.9 18.59  53
34Ups Sco      17:32:08.9 -37:18:36  2.7  6.08  69
PPM 296839     17:50:29.8 -31:42:30  4.9  1.00  72
PPM 296850     17:50:50.1 -32:57:40  8.3  0.30  72
471136         17:51:24.6 -32:41:13 16.1        72
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 1.2 sigma about the mid-time.
The median site spacing is 10.2 km RECON observability=0.3 and success probability=0.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 10:32:43 -15.0 AT Up 7.3 175.8 Really Low 10:17:43 - 10:47:43 3887
Summerland 10:32:44 -15.4 AT Up 7.6 175.5 Really Low 10:17:44 - 10:47:44 3885
Penticton 10:32:44 -15.4 AT Up 7.7 175.6 Really Low 10:17:44 - 10:47:44 3883
Okanagan Falls 10:32:44 -15.5 AT Up 7.8 175.6 Really Low 10:17:44 - 10:47:44 3881
Oliver 10:32:44 -15.6 AT Up 8.0 175.6 Really Low 10:17:44 - 10:47:44 3878
Anarchist Mountain Observatory 10:32:43 -15.7 AT Up 8.2 175.8 Really Low 10:17:43 - 10:47:43 3874
Oroville 10:32:44 -15.8 AT Up 8.3 175.7 Really Low 10:17:44 - 10:47:44 3874
Tonasket 10:32:43 -16.0 AT Up 8.5 175.7 Really Low 10:17:43 - 10:47:43 3870
Okanogan 10:32:45 -16.3 AT Up 8.8 175.6 Really Low 10:17:45 - 10:47:45 3866
Brewster 10:32:46 -16.6 AT Up 9.1 175.4 Really Low 10:17:46 - 10:47:46 3863
Manson/Chelan 10:32:49 -16.9 AT Up 9.3 175.1 Really Low 10:17:49 - 10:47:49 3862
Entiat 10:32:49 -17.1 AT Up 9.5 175.1 Really Low 10:17:49 - 10:47:49 3858
Wenatchee 10:32:50 -17.3 AT Up 9.7 175.0 Really Low 10:17:50 - 10:47:50 3855
Ellensburg 10:32:51 -17.7 AT Up 10.1 174.8 Really Low 10:17:51 - 10:47:51 3849
Yakima 10:32:52 -18.1 Dark Up 10.5 174.8 Really Low 10:17:52 - 10:47:52 3841
Toppenish/White Swan 10:32:51 -18.2 Dark Up 10.8 174.9 Really Low 10:17:51 - 10:47:51 3836
Goldendale 10:32:55 -18.8 Dark Up 11.3 174.6 Really Low 10:17:55 - 10:47:55 3827
The Dalles 10:32:56 -19.1 Dark Up 11.5 174.2 Really Low 10:17:56 - 10:47:56 3825
Pasco 10:32:44 -17.7 AT Up 11.0 176.0 Really Low 10:17:44 - 10:47:44 3824
George/Umatilla 10:32:45 -18.1 Dark Up 11.3 175.8 Really Low 10:17:45 - 10:47:45 3819
PNWRO 10:32:43 -17.8 AT Up 11.2 176.2 Really Low 10:17:43 - 10:47:43 3817
Maupin 10:32:56 -19.4 Dark Up 11.9 174.3 Really Low 10:17:56 - 10:47:56 3815
Madras/Culver 10:32:57 -19.8 Dark Up 12.5 174.3 Really Low 10:17:57 - 10:47:57 3803
Sisters 10:33:00 -20.3 Dark Up 12.8 173.9 Really Low 10:18:00 - 10:48:00 3798
Redmond 10:32:58 -20.1 Dark Up 12.8 174.2 Really Low 10:17:58 - 10:47:58 3795
Bend 10:32:59 -20.4 Dark Up 13.0 174.1 Really Low 10:17:59 - 10:47:59 3791
Oregon Observatory 10:33:00 -20.6 Dark Up 13.2 174.0 Really Low 10:18:00 - 10:48:00 3787
La Pine/Gilchrist 10:33:00 -20.7 Dark Up 13.4 173.9 Really Low 10:18:00 - 10:48:00 3782
North Lake 10:32:57 -20.8 Dark Up 13.8 174.4 Really Low 10:17:57 - 10:47:57 3768
Chiloquin 10:33:04 -21.8 Dark Up 14.4 173.6 Really Low 10:18:04 - 10:48:04 3756
Paisley 10:32:56 -21.1 Dark Up 14.4 174.7 Really Low 10:17:56 - 10:47:56 3751
Klamath Falls 10:33:03 -22.0 Dark Up 14.8 173.7 Really Low 10:18:03 - 10:48:03 3746
Tulelake 10:33:02 -22.1 Dark Up 15.1 173.9 Really Low 10:18:02 - 10:48:02 3737
Lakeview 10:32:55 -21.4 Dark Up 14.9 174.9 Really Low 10:17:55 - 10:47:55 3736
Cedarville 10:32:54 -21.8 Dark Up 15.6 175.0 Really Low 10:17:54 - 10:47:54 3716
Fall River/Burney 10:33:02 -22.7 Dark Up 16.0 174.0 Really Low 10:18:02 - 10:48:02 3710
Susanville 10:32:58 -22.9 Dark Up 16.7 174.6 Really Low 10:17:58 - 10:47:58 3686
Greenville 10:33:01 -23.2 Dark Up 16.9 174.3 Really Low 10:18:01 - 10:48:01 3679
Gimple 10:33:01 -23.2 Dark Up 16.9 174.4 Really Low 10:18:01 - 10:48:01 3678
Quincy 10:33:01 -23.4 Dark Up 17.1 174.3 Really Low 10:18:01 - 10:48:01 3673
Portola 10:32:58 -23.2 Dark Up 17.3 174.7 Really Low 10:17:58 - 10:47:58 3665
Reno 10:32:54 -23.1 Dark Up 17.6 175.3 Really Low 10:17:54 - 10:47:54 3652
Carson City 10:32:54 -23.4 Dark Up 18.0 175.3 Really Low 10:17:54 - 10:47:54 3640
Gardnerville 10:32:54 -23.5 Dark Up 18.2 175.3 Really Low 10:17:54 - 10:47:54 3631
Yerington 10:32:50 -23.2 Dark Up 18.2 175.8 Really Low 10:17:50 - 10:47:50 3628
Hawthorne 10:32:48 -23.3 Dark Up 18.7 176.3 Really Low 10:17:48 - 10:47:48 3607
Lee Vining 10:32:51 -23.9 Dark Up 19.2 175.8 Really Low 10:17:51 - 10:47:51 3592
Tonopah 10:32:38 -22.9 Dark Up 19.2 177.5 Really Low 10:17:38 - 10:47:38 3578
Bishop 10:32:46 -24.0 Dark Up 19.9 176.5 Really Low 10:17:46 - 10:47:46 3564
Lone Pine 10:32:45 -24.4 Dark Up 20.6 176.7 Low 10:17:45 - 10:47:45 3532
Beatty 10:32:36 -23.4 Dark Up 20.4 177.9 Low 10:17:36 - 10:47:36 3530
Indian Springs 10:32:29 -23.1 Dark Up 20.7 178.8 Low 10:17:29 - 10:47:29 3506
CPSLO 10:33:03 -26.7 Dark Up 21.8 174.4 Low 10:18:03 - 10:48:03 3503
Henderson 10:32:25 -23.1 Dark Up 21.3 179.4 Low 10:17:25 - 10:47:25 3477
Niwot 10:31:21 -14.7 AT Up 16.7 187.8 Really Low 10:16:21 - 10:46:21 3475
SwRI 10:31:21 -14.8 AT Up 16.9 187.7 Really Low 10:16:21 - 10:46:21 3473
Searchlight/Boulder City 10:32:24 -23.4 Dark Up 21.9 179.5 Low 10:17:24 - 10:47:24 3453
Patrick 10:32:17 -22.8 Dark Up 21.9 180.4 Low 10:17:17 - 10:47:17 3437
Laughlin/Bullhead City 10:32:22 -23.4 Dark Up 22.1 179.8 Low 10:17:22 - 10:47:22 3436
Wildwood 10:32:51 -26.5 Dark Up 23.1 176.2 Low 10:17:51 - 10:47:51 3436
Kingman/Dolan Springs 10:32:19 -23.1 Dark Up 22.1 180.2 Low 10:17:19 - 10:47:19 3431
Mohave Valley 10:32:23 -23.6 Dark Up 22.4 179.8 Low 10:17:23 - 10:47:23 3425
DCO 10:32:13 -22.6 Dark Up 22.2 181.0 Low 10:17:13 - 10:47:13 3415
Lake Havasu City 10:32:21 -23.7 Dark Up 22.8 180.0 Low 10:17:21 - 10:47:21 3405
Idyllwild 10:32:38 -25.6 Dark Up 23.5 177.9 Low 10:17:38 - 10:47:38 3401
Parker 10:32:21 -23.9 Dark Up 23.2 180.0 Low 10:17:21 - 10:47:21 3389
Blythe 10:32:23 -24.5 Dark Up 23.7 179.8 Low 10:17:23 - 10:47:23 3370
Calipatria 10:32:30 -25.4 Dark Up 24.2 178.9 Low 10:17:30 - 10:47:30 3360
Yuma 10:32:24 -25.1 Dark Up 24.6 179.7 Low 10:17:24 - 10:47:24 3329

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 471136, (2020/05/05 10:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.59  53
34Ups Sco      17:30:45.8 -37:17:46  2.7  6.08  69
PPM 296839     17:49:10.5 -31:42:12  4.9  1.00  72
PPM 296850     17:49:29.9 -32:57:23  8.3  0.30  72
471136         17:50:04.6 -32:40:57 16.1        72
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:34:05 UT

Marc W. Buie, Southwest Research Institute

RECON