RECON: TNO occultation with 168703

Event between (168703) 00GP183 and star GA0660:06706382 with event index number of 261848

Geocentric closest approach at 2020/05/29 06:02:00 UTC

J2000 position of star is 15:45:49.2 -22:56:00
Equinox of date position of star is 15:46:58.2 -22:59:34
Stellar brightness G=15.6, use SENSEUP=128
Star is 93 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=21.6

[RECON map]
TNO is 36.8 AU from the Sun and 35.8 AU from the Earth.
The TNO is moving 24.0 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 191 seconds.
The 1-sigma cross-track error in the shadow position is 2592 km.
The sky-plane scale is 25969.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.0
Diameter=380.2 km assuming a 5% albedo -- 15.8 sec chord
Diameter=155.2 km assuming a 30% albedo -- 6.5 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 168703, (2020/05/29 06:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:39.7 -26:28:32  0.9 10.50 103
7Del Sco       16:01:32.6 -22:40:42  2.3  3.36  96
42 Lib         15:41:29.5 -23:52:59  5.0  1.55  92
PPM 264655     15:46:55.3 -22:48:57  6.8  0.18  93
PPM 264645     15:46:23.8 -22:57:12  8.9  0.15  93
168703         15:47:01.6 -22:59:45 15.6        93
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 4.7 sigma about the mid-time.
The median site spacing is 8.3 km RECON observability=0.7 and success probability=5.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 06:03:45 -14.3 AT Up 15.5 163.1 Really Low 05:48:45 - 06:18:45 -2183
Summerland 06:03:46 -14.5 AT Up 15.7 162.8 Really Low 05:48:46 - 06:18:46 -2201
Penticton 06:03:45 -14.6 AT Up 15.8 162.9 Really Low 05:48:45 - 06:18:45 -2201
Okanagan Falls 06:03:46 -14.7 AT Up 16.0 162.9 Really Low 05:48:46 - 06:18:46 -2209
Oliver 06:03:46 -14.9 AT Up 16.2 162.9 Really Low 05:48:46 - 06:18:46 -2215
Anarchist Mountain Observatory 06:03:45 -15.1 AT Up 16.4 163.1 Really Low 05:48:45 - 06:18:45 -2218
Oroville 06:03:46 -15.1 AT Up 16.4 163.0 Really Low 05:48:46 - 06:18:46 -2222
Tonasket 06:03:46 -15.3 AT Up 16.6 163.0 Really Low 05:48:46 - 06:18:46 -2232
Okanogan 06:03:47 -15.6 AT Up 16.9 162.8 Really Low 05:48:47 - 06:18:47 -2249
Brewster 06:03:47 -15.8 AT Up 17.1 162.6 Really Low 05:48:47 - 06:18:47 -2266
Manson/Chelan 06:03:49 -15.8 AT Up 17.3 162.3 Really Low 05:48:49 - 06:18:49 -2283
Entiat 06:03:49 -16.0 AT Up 17.5 162.2 Really Low 05:48:49 - 06:18:49 -2294
Wenatchee 06:03:49 -16.2 AT Up 17.7 162.0 Really Low 05:48:49 - 06:18:49 -2308
Niwot 06:03:04 -26.9 Dark Up 26.9 176.3 Low 05:48:04 - 06:18:04 -2309
SwRI 06:03:04 -27.0 Dark Up 27.0 176.2 Low 05:48:04 - 06:18:04 -2316
Pasco 06:03:47 -17.6 AT Up 19.0 163.1 Really Low 05:48:47 - 06:18:47 -2330
Ellensburg 06:03:50 -16.5 AT Up 18.0 161.8 Really Low 05:48:50 - 06:18:50 -2332
PNWRO 06:03:46 -17.9 AT Up 19.3 163.3 Really Low 05:48:46 - 06:18:46 -2336
Yakima 06:03:51 -16.9 AT Up 18.4 161.7 Really Low 05:48:51 - 06:18:51 -2350
George/Umatilla 06:03:47 -17.9 AT Up 19.3 162.8 Really Low 05:48:47 - 06:18:47 -2351
Toppenish/White Swan 06:03:50 -17.1 AT Up 18.7 161.9 Really Low 05:48:50 - 06:18:50 -2356
Goldendale 06:03:52 -17.5 AT Up 19.1 161.4 Really Low 05:48:52 - 06:18:52 -2392
The Dalles 06:03:53 -17.5 AT Up 19.2 161.1 Really Low 05:48:53 - 06:18:53 -2412
Maupin 06:03:53 -17.9 AT Up 19.6 161.1 Really Low 05:48:53 - 06:18:53 -2429
Madras/Culver 06:03:54 -18.4 Dark Up 20.2 161.0 Low 05:48:54 - 06:18:54 -2456
Redmond 06:03:54 -18.7 Dark Up 20.5 160.9 Low 05:48:54 - 06:18:54 -2475
Sisters 06:03:55 -18.5 Dark Up 20.4 160.5 Low 05:48:55 - 06:18:55 -2484
Bend 06:03:54 -18.8 Dark Up 20.7 160.8 Low 05:48:54 - 06:18:54 -2489
Oregon Observatory 06:03:55 -19.0 Dark Up 20.8 160.6 Low 05:48:55 - 06:18:55 -2501
La Pine/Gilchrist 06:03:56 -19.1 Dark Up 21.0 160.5 Low 05:48:56 - 06:18:56 -2513
North Lake 06:03:54 -19.7 Dark Up 21.5 161.1 Low 05:48:54 - 06:18:54 -2519
Paisley 06:03:53 -20.3 Dark Up 22.1 161.3 Low 05:48:53 - 06:18:53 -2538
Lakeview 06:03:53 -20.8 Dark Up 22.6 161.4 Low 05:48:53 - 06:18:53 -2559
Chiloquin 06:03:58 -20.0 Dark Up 21.9 160.1 Low 05:48:58 - 06:18:58 -2580
Cedarville 06:03:53 -21.5 Dark Up 23.3 161.5 Low 05:48:53 - 06:18:53 -2589
Klamath Falls 06:03:57 -20.3 Dark Up 22.3 160.1 Low 05:48:57 - 06:18:57 -2595
Tulelake 06:03:57 -20.6 Dark Up 22.6 160.3 Low 05:48:57 - 06:18:57 -2601
Fall River/Burney 06:03:57 -21.4 Dark Up 23.5 160.3 Low 05:48:57 - 06:18:57 -2648
Susanville 06:03:54 -22.3 Dark Up 24.3 160.9 Low 05:48:54 - 06:18:54 -2662
Gimple 06:03:55 -22.4 Dark Up 24.5 160.7 Low 05:48:55 - 06:18:55 -2683
Greenville 06:03:56 -22.4 Dark Up 24.4 160.6 Low 05:48:56 - 06:18:56 -2686
Reno 06:03:53 -23.3 Dark Up 25.3 161.6 Low 05:48:53 - 06:18:53 -2688
Portola 06:03:54 -22.9 Dark Up 24.9 161.0 Low 05:48:54 - 06:18:54 -2691
Quincy 06:03:56 -22.6 Dark Up 24.6 160.6 Low 05:48:56 - 06:18:56 -2697
Yerington 06:03:51 -24.1 Dark Up 26.0 162.1 Low 05:48:51 - 06:18:51 -2701
Tonopah 06:03:45 -25.6 Dark Up 27.3 163.9 Low 05:48:45 - 06:18:45 -2702
Carson City 06:03:52 -23.7 Dark Up 25.6 161.5 Low 05:48:52 - 06:18:52 -2707
Hawthorne 06:03:50 -24.7 Dark Up 26.5 162.6 Low 05:48:50 - 06:18:50 -2713
Gardnerville 06:03:52 -23.9 Dark Up 25.9 161.6 Low 05:48:52 - 06:18:52 -2720
Indian Springs 06:03:39 -27.4 Dark Up 29.0 165.3 Low 05:48:39 - 06:18:39 -2747
Beatty 06:03:43 -26.8 Dark Up 28.5 164.2 Low 05:48:43 - 06:18:43 -2757
Lee Vining 06:03:51 -25.0 Dark Up 27.0 162.0 Low 05:48:51 - 06:18:51 -2759
Henderson 06:03:37 -28.2 Dark Up 29.7 165.9 Low 05:48:37 - 06:18:37 -2761
Patrick 06:03:33 -29.1 Dark Up 30.5 166.9 Up 05:48:33 - 06:18:33 -2769
DCO 06:03:31 -29.6 Dark Up 30.9 167.6 Up 05:48:31 - 06:18:31 -2769
Bishop 06:03:49 -25.8 Dark Up 27.7 162.6 Low 05:48:49 - 06:18:49 -2774
Kingman/Dolan Springs 06:03:34 -29.2 Dark Up 30.7 166.7 Up 05:48:34 - 06:18:34 -2787
Searchlight/Boulder City 06:03:37 -28.7 Dark Up 30.3 165.9 Up 05:48:37 - 06:18:37 -2794
Laughlin/Bullhead City 06:03:36 -29.1 Dark Up 30.6 166.2 Up 05:48:36 - 06:18:36 -2802
Lone Pine 06:03:48 -26.6 Dark Up 28.5 162.9 Low 05:48:48 - 06:18:48 -2810
Mohave Valley 06:03:36 -29.3 Dark Up 30.9 166.1 Up 05:48:36 - 06:18:36 -2819
Lake Havasu City 06:03:35 -29.8 Dark Up 31.3 166.3 Up 05:48:35 - 06:18:35 -2837
Parker 06:03:35 -30.1 Dark Up 31.7 166.3 Up 05:48:35 - 06:18:35 -2858
Blythe 06:03:36 -30.5 Dark Up 32.1 165.9 Up 05:48:36 - 06:18:36 -2899
Idyllwild 06:03:44 -29.6 Dark Up 31.6 163.8 Up 05:48:44 - 06:18:44 -2950
Calipatria 06:03:40 -30.6 Dark Up 32.4 164.9 Up 05:48:40 - 06:18:40 -2956
Yuma 06:03:36 -31.3 Dark Up 33.0 165.8 Up 05:48:36 - 06:18:36 -2959
CPSLO 06:03:57 -26.7 Dark Up 29.1 160.0 Low 05:48:57 - 06:18:57 -2964
Wildwood 06:03:51 -28.6 Dark Up 30.8 161.9 Up 05:48:51 - 06:18:51 -2981

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 168703, (2020/05/29 06:02UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.50 103
7Del Sco       16:00:20.0 -22:37:18  2.3  3.36  96
42 Lib         15:40:16.9 -23:49:05  5.0  1.55  92
PPM 264655     15:45:42.9 -22:45:12  6.8  0.18  93
PPM 264645     15:45:11.4 -22:53:26  8.9  0.15  93
168703         15:45:49.2 -22:56:00 15.6        93
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:43:06 UT

Marc W. Buie, Southwest Research Institute

RECON