RECON: TNO occultation with 10JJ124

Event between 10JJ124 and star GA0720:22291756 with event index number of 288441

Geocentric closest approach at 2020/07/01 08:49:40 UTC

J2000 position of star is 18:26:00.0 -17:14:18
Equinox of date position of star is 18:27:05.7 -17:13:34
Stellar brightness G=16.3, use SENSEUP=128
Star is 46 degrees from the moon. Moon is 82% illuminated.
TNO apparent brightness V=20.5

[RECON map]
TNO is 25.0 AU from the Sun and 24.0 AU from the Earth.
The TNO is moving 23.6 km/sec on the sky relative to the star, or, 4.9 arcsec/hr.
The 1-sigma error in the time of the event is 109 seconds.
The 1-sigma cross-track error in the shadow position is 2163 km.
The sky-plane scale is 17415.0 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=272.9 km assuming a 5% albedo -- 12.1 sec chord
Diameter=111.4 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JJ124, (2020/07/01 08:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.1 -26:28:33  0.9 28.50  21
Nunki          18:56:32.1 -26:16:10  2.0 11.32  53
PPM 234652     18:32:38.4 -18:23:13  5.0  1.74  47
PPM 234536     18:27:51.7 -17:38:29  8.3  0.45  46
PPM 234522     18:26:57.9 -17:03:48  9.4  0.17  46
10JJ124        18:27:11.4 -17:13:31 16.3        46
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 12.6 km RECON observability=1.0 and success probability=8.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 08:49:27 -16.3 AT Up 21.3 196.8 Low 08:39:50 - 08:59:04 2964
Summerland 08:49:28 -16.4 AT Up 21.4 196.4 Low 08:39:51 - 08:59:05 2961
Penticton 08:49:27 -16.6 AT Up 21.7 196.6 Low 08:39:50 - 08:59:04 2949
Okanagan Falls 08:49:26 -16.8 AT Up 21.9 196.6 Low 08:39:49 - 08:59:03 2941
Oliver 08:49:26 -17.0 AT Up 22.0 196.7 Low 08:39:49 - 08:59:03 2934
Anarchist Mountain Observatory 08:49:25 -17.1 AT Up 22.2 196.9 Low 08:39:48 - 08:59:02 2928
Oroville 08:49:25 -17.2 AT Up 22.3 196.8 Low 08:39:48 - 08:59:02 2924
Tonasket 08:49:25 -17.4 AT Up 22.5 196.9 Low 08:39:48 - 08:59:02 2914
Okanogan 08:49:25 -17.8 AT Up 22.8 196.7 Low 08:39:48 - 08:59:02 2899
Brewster 08:49:25 -18.1 Dark Up 23.1 196.6 Low 08:39:48 - 08:59:02 2887
Manson/Chelan 08:49:26 -18.3 Dark Up 23.4 196.2 Low 08:39:49 - 08:59:03 2876
Entiat 08:49:26 -18.6 Dark Up 23.6 196.2 Low 08:39:49 - 08:59:03 2866
Wenatchee 08:49:26 -18.8 Dark Up 23.9 196.1 Low 08:39:49 - 08:59:03 2854
Ellensburg 08:49:27 -19.3 Dark Up 24.3 195.9 Low 08:39:50 - 08:59:04 2834
Yakima 08:49:26 -19.7 Dark Up 24.7 196.0 Low 08:39:49 - 08:59:03 2815
Toppenish/White Swan 08:49:25 -19.9 Dark Up 24.9 196.2 Low 08:39:48 - 08:59:02 2806
Pasco 08:49:21 -19.8 Dark Up 24.8 197.5 Low 08:39:44 - 08:58:58 2806
PNWRO 08:49:20 -20.0 Dark Up 25.0 197.7 Low 08:39:43 - 08:58:57 2795
George/Umatilla 08:49:21 -20.2 Dark Up 25.1 197.3 Low 08:39:44 - 08:58:58 2789
Goldendale 08:49:26 -20.5 Dark Up 25.5 195.8 Low 08:39:49 - 08:59:03 2778
The Dalles 08:49:27 -20.7 Dark Up 25.8 195.5 Low 08:39:50 - 08:59:04 2765
Maupin 08:49:26 -21.1 Dark Up 26.2 195.6 Low 08:39:49 - 08:59:03 2746
Madras/Culver 08:49:25 -21.7 Dark Up 26.7 195.6 Low 08:39:48 - 08:59:02 2718
Redmond 08:49:25 -22.0 Dark Up 27.1 195.6 Low 08:39:48 - 08:59:02 2700
Sisters 08:49:27 -22.0 Dark Up 27.1 195.2 Low 08:39:50 - 08:59:04 2699
Bend 08:49:26 -22.2 Dark Up 27.3 195.5 Low 08:39:49 - 08:59:03 2689
Oregon Observatory 08:49:26 -22.4 Dark Up 27.5 195.4 Low 08:39:49 - 08:59:03 2679
La Pine/Gilchrist 08:49:26 -22.6 Dark Up 27.7 195.4 Low 08:39:49 - 08:59:03 2668
North Lake 08:49:23 -23.0 Dark Up 28.0 196.1 Low 08:39:46 - 08:59:00 2649
Paisley 08:49:21 -23.5 Dark Up 28.5 196.5 Low 08:39:44 - 08:58:58 2621
Chiloquin 08:49:26 -23.8 Dark Up 28.8 195.1 Low 08:39:49 - 08:59:03 2608
Lakeview 08:49:20 -24.0 Dark Up 28.9 196.8 Low 08:39:43 - 08:58:57 2595
Klamath Falls 08:49:25 -24.1 Dark Up 29.2 195.3 Low 08:39:48 - 08:59:02 2590
Tulelake 08:49:24 -24.3 Dark Up 29.4 195.6 Low 08:39:47 - 08:59:01 2577
Cedarville 08:49:19 -24.6 Dark Up 29.5 197.1 Low 08:39:42 - 08:58:56 2560
Fall River/Burney 08:49:22 -25.2 Dark Up 30.2 195.9 Up 08:39:45 - 08:58:59 2527
Niwot 08:48:28 -22.4 Dark Down 26.1 212.5 Low 08:38:51 - 08:58:05 2501
Susanville 08:49:19 -25.7 Dark Up 30.7 196.8 Up 08:39:42 - 08:58:56 2495
Gimple 08:49:20 -26.0 Dark Up 31.0 196.6 Up 08:39:43 - 08:58:57 2478
Greenville 08:49:20 -26.1 Dark Up 31.0 196.5 Up 08:39:43 - 08:58:57 2478
Quincy 08:49:20 -26.3 Dark Up 31.2 196.5 Up 08:39:43 - 08:58:57 2466
Portola 08:49:18 -26.3 Dark Up 31.2 197.1 Up 08:39:41 - 08:58:55 2461
Reno 08:49:15 -26.5 Dark Up 31.3 197.8 Up 08:39:38 - 08:58:52 2449
Carson City 08:49:15 -26.8 Dark Up 31.7 197.9 Up 08:39:38 - 08:58:52 2428
Yerington 08:49:13 -26.9 Dark Up 31.7 198.6 Up 08:39:36 - 08:58:50 2420
Gardnerville 08:49:15 -27.1 Dark Up 31.9 198.0 Up 08:39:38 - 08:58:52 2414
Hawthorne 08:49:10 -27.3 Dark Up 32.0 199.3 Up 08:39:33 - 08:58:47 2394
Tonopah 08:49:05 -27.5 Dark Up 32.1 200.9 Up 08:39:28 - 08:58:42 2372
Lee Vining 08:49:11 -27.9 Dark Up 32.7 198.8 Up 08:39:34 - 08:58:48 2358
Bishop 08:49:08 -28.4 Dark Up 33.0 199.8 Up 08:39:31 - 08:58:45 2325
Beatty 08:49:02 -28.5 Dark Up 33.0 201.6 Up 08:39:25 - 08:58:39 2302
Indian Springs 08:48:57 -28.6 Dark Up 33.0 202.8 Up 08:39:20 - 08:58:34 2285
Lone Pine 08:49:06 -29.0 Dark Up 33.7 200.3 Up 08:39:29 - 08:58:43 2278
Henderson 08:48:54 -28.9 Dark Up 33.3 203.7 Up 08:39:17 - 08:58:31 2253
Searchlight/Boulder City 08:48:53 -29.5 Dark Up 33.8 203.9 Up 08:39:16 - 08:58:30 2217
Patrick 08:48:49 -29.3 Dark Up 33.5 205.1 Up 08:39:12 - 08:58:26 2216
Kingman/Dolan Springs 08:48:50 -29.5 Dark Up 33.7 204.9 Up 08:39:13 - 08:58:27 2201
Laughlin/Bullhead City 08:48:51 -29.7 Dark Up 33.9 204.4 Up 08:39:14 - 08:58:28 2198
DCO 08:48:46 -29.4 Dark Up 33.5 205.9 Up 08:39:09 - 08:58:23 2197
CPSLO 08:49:13 -30.8 Dark Up 35.6 197.7 Up 08:39:36 - 08:58:50 2183
Mohave Valley 08:48:51 -29.9 Dark Up 34.2 204.5 Up 08:39:14 - 08:58:28 2180
Lake Havasu City 08:48:50 -30.2 Dark Up 34.5 204.8 Up 08:39:13 - 08:58:27 2155
Parker 08:48:49 -30.6 Dark Up 34.8 205.0 Up 08:39:12 - 08:58:26 2131
Wildwood 08:49:05 -31.6 Dark Up 36.2 200.3 Up 08:39:28 - 08:58:42 2113
Idyllwild 08:48:58 -31.5 Dark Up 35.9 202.5 Up 08:39:21 - 08:58:35 2097
Blythe 08:48:50 -31.1 Dark Up 35.3 204.8 Up 08:39:13 - 08:58:27 2095
Calipatria 08:48:52 -31.9 Dark Up 36.1 203.9 Up 08:39:15 - 08:58:29 2059
Yuma 08:48:48 -32.0 Dark Up 36.2 205.0 Up 08:39:11 - 08:58:25 2032

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 10JJ124, (2020/07/01 08:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.50  21
Nunki          18:55:15.9 -26:17:49  2.0 11.32  53
PPM 234652     18:31:26.3 -18:24:10  5.0  1.74  47
PPM 234536     18:26:40.0 -17:39:18  8.3  0.45  46
PPM 234522     18:25:46.5 -17:04:36  9.4  0.17  46
10JJ124        18:26:00.0 -17:14:18 16.3        46
Positions are for J2000

Event circumstances last updated at 2018/11/05 21:25:13 UT

Marc W. Buie, Southwest Research Institute

RECON