RECON: TNO occultation with 10JJ124

Event between 10JJ124 and star GA0720:21447234 with event index number of 288518

Geocentric closest approach at 2020/08/12 05:20:34 UTC

J2000 position of star is 18:21:08.8 -17:05:41
Equinox of date position of star is 18:22:19.2 -17:05:02
Stellar brightness G=14.0, use SENSEUP=64
Star is 141 degrees from the moon. Moon is 45% illuminated.
TNO apparent brightness V=24.1

[RECON map]
TNO is 25.1 AU from the Sun and 24.3 AU from the Earth.
The TNO is moving 14.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 283 seconds.
The 1-sigma cross-track error in the shadow position is 3401 km.
The sky-plane scale is 17649.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=284.5 km assuming a 5% albedo -- 4.1 sec chord
Diameter=116.1 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JJ124, (2020/08/12 05:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.5 -26:28:34  0.9 27.50 164
Nunki          18:56:32.5 -26:16:10  2.0 12.14 133
PPM 234283     18:18:23.6 -17:21:54  5.8  0.98 142
PPM 234414     18:22:21.1 -17:22:14  8.1  0.29 141
PPM 234408     18:22:12.2 -17:08:27  8.6  0.07 141
10JJ124        18:22:20.6 -17:05:02 14.0       140
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 3.2 sigma about the mid-time.
The median site spacing is 13.7 km RECON observability=1.0 and success probability=6.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:20:50 -15.9 AT Down 22.4 187.0 Low 05:05:50 - 05:35:50 3686
Kelowna 05:20:50 -16.2 AT Down 22.8 186.8 Low 05:05:50 - 05:35:50 3668
Peachland 05:20:52 -16.1 AT Down 22.9 186.5 Low 05:05:52 - 05:35:52 3662
Summerland 05:20:51 -16.3 AT Down 23.1 186.6 Low 05:05:51 - 05:35:51 3656
Penticton 05:20:51 -16.4 AT Down 23.1 186.8 Low 05:05:51 - 05:35:51 3654
Oliver 05:20:50 -16.6 AT Down 23.5 186.8 Low 05:05:50 - 05:35:50 3639
Anarchist Mountain Observatory 05:20:49 -16.8 AT Down 23.6 187.0 Low 05:05:49 - 05:35:49 3633
Tonasket 05:20:49 -17.0 AT Down 23.9 186.9 Low 05:05:49 - 05:35:49 3618
Okanogan 05:20:50 -17.2 AT Down 24.3 186.8 Low 05:05:50 - 05:35:50 3602
Brewster 05:20:51 -17.3 AT Down 24.6 186.6 Low 05:05:51 - 05:35:51 3589
Victoria 05:21:08 -15.4 AT Down 24.3 182.8 Low 05:06:08 - 05:36:08 3582
Manson/Chelan 05:20:52 -17.3 AT Down 24.8 186.2 Low 05:05:52 - 05:35:52 3577
Entiat 05:20:52 -17.5 AT Down 25.0 186.2 Low 05:05:52 - 05:35:52 3566
Wenatchee 05:20:52 -17.6 AT Down 25.3 186.1 Low 05:05:52 - 05:35:52 3554
Ellensburg 05:20:53 -17.8 AT Down 25.7 185.9 Low 05:05:53 - 05:35:53 3533
Yakima 05:20:53 -18.1 Dark Down 26.1 185.9 Low 05:05:53 - 05:35:53 3513
Pasco 05:20:46 -19.0 Dark Down 26.3 187.4 Low 05:05:46 - 05:35:46 3506
Toppenish/White Swan 05:20:52 -18.4 Dark Down 26.3 186.0 Low 05:05:52 - 05:35:52 3504
PNWRO 05:20:44 -19.3 Dark Down 26.6 187.6 Low 05:05:44 - 05:35:44 3496
Goldendale 05:20:54 -18.6 Dark Down 26.9 185.6 Low 05:05:54 - 05:35:54 3474
The Dalles 05:20:55 -18.6 Dark Down 27.2 185.2 Low 05:05:55 - 05:35:55 3460
Maupin 05:20:54 -18.9 Dark Down 27.6 185.4 Low 05:05:54 - 05:35:54 3440
Redmond 05:20:54 -19.5 Dark Down 28.5 185.3 Low 05:05:54 - 05:35:54 3393
Sisters 05:20:56 -19.3 Dark Down 28.5 184.9 Low 05:05:56 - 05:35:56 3391
Bend 05:20:54 -19.6 Dark Down 28.7 185.2 Low 05:05:54 - 05:35:54 3381
Oregon Observatory 05:20:55 -19.7 Dark Down 28.9 185.0 Low 05:05:55 - 05:35:55 3371
La Pine/Gilchrist 05:20:55 -19.8 Dark Down 29.1 185.0 Low 05:05:55 - 05:35:55 3359
North Lake 05:20:52 -20.4 Dark Down 29.5 185.7 Low 05:05:52 - 05:35:52 3341
Paisley 05:20:49 -21.0 Dark Down 30.0 186.1 Low 05:05:49 - 05:35:49 3313
Lakeview 05:20:48 -21.4 Dark Down 30.5 186.3 Up 05:05:48 - 05:35:48 3287
Klamath Falls 05:20:55 -20.7 Dark Down 30.5 184.8 Up 05:05:55 - 05:35:55 3278
Cedarville 05:20:46 -22.0 Dark Down 31.1 186.5 Up 05:05:46 - 05:35:46 3251
Niwot 05:19:23 -29.8 Dark Down 29.7 202.7 Low 05:04:23 - 05:34:23 3233
SwRI 05:19:23 -29.8 Dark Down 29.8 202.6 Low 05:04:23 - 05:34:23 3227
Fall River/Burney 05:20:52 -21.7 Dark Down 31.7 185.2 Up 05:05:52 - 05:35:52 3214
Susanville 05:20:48 -22.6 Dark Down 32.3 186.1 Up 05:05:48 - 05:35:48 3183
Gimple 05:20:49 -22.6 Dark Down 32.6 185.9 Up 05:05:49 - 05:35:49 3165
Greenville 05:20:49 -22.6 Dark Down 32.6 185.8 Up 05:05:49 - 05:35:49 3164
Quincy 05:20:49 -22.7 Dark Down 32.8 185.8 Up 05:05:49 - 05:35:49 3152
Portola 05:20:46 -23.1 Dark Down 32.9 186.3 Up 05:05:46 - 05:35:46 3149
Reno 05:20:43 -23.6 Dark Down 33.1 187.1 Up 05:05:43 - 05:35:43 3138
Carson City 05:20:42 -23.9 Dark Down 33.4 187.1 Up 05:05:42 - 05:35:42 3117
Yerington 05:20:38 -24.4 Dark Down 33.6 187.8 Up 05:05:38 - 05:35:38 3109
Gardnerville 05:20:41 -24.1 Dark Down 33.7 187.2 Up 05:05:41 - 05:35:41 3102
Hawthorne 05:20:34 -25.0 Dark Down 34.0 188.5 Up 05:05:34 - 05:35:34 3085
Tonopah 05:20:26 -26.1 Dark Down 34.2 190.1 Up 05:05:26 - 05:35:26 3066
Lee Vining 05:20:37 -25.1 Dark Down 34.6 188.0 Up 05:05:37 - 05:35:37 3047
Bishop 05:20:32 -25.9 Dark Down 35.1 188.9 Up 05:05:32 - 05:35:32 3014
Beatty 05:20:22 -27.1 Dark Down 35.3 190.8 Up 05:05:22 - 05:35:22 2995
Indian Springs 05:20:15 -28.0 Dark Down 35.5 192.0 Up 05:05:15 - 05:35:15 2981
Henderson 05:20:11 -28.7 Dark Down 35.9 192.9 Up 05:05:11 - 05:35:11 2950
Patrick 05:20:04 -29.8 Dark Down 36.3 194.3 Up 05:05:04 - 05:35:04 2915
Searchlight/Boulder City 05:20:10 -29.2 Dark Down 36.4 193.1 Up 05:05:10 - 05:35:10 2913
Kingman/Dolan Springs 05:20:05 -29.8 Dark Down 36.5 194.1 Up 05:05:05 - 05:35:05 2899
DCO 05:19:59 -30.4 Dark Down 36.4 195.1 Up 05:04:59 - 05:34:59 2898
Laughlin/Bullhead City 05:20:07 -29.6 Dark Down 36.6 193.5 Up 05:05:07 - 05:35:07 2894
Mohave Valley 05:20:06 -29.8 Dark Down 36.9 193.5 Up 05:05:06 - 05:35:06 2876
CPSLO 05:20:44 -26.2 Dark Down 37.4 186.4 Up 05:05:44 - 05:35:44 2862
Lake Havasu City 05:20:05 -30.2 Dark Down 37.3 193.9 Up 05:05:05 - 05:35:05 2851
Parker 05:20:04 -30.5 Dark Down 37.6 194.0 Up 05:05:04 - 05:35:04 2827
George/Scottsdale 05:19:49 -32.1 Dark Down 37.5 196.9 Up 05:04:49 - 05:34:49 2810
Wildwood 05:20:30 -28.2 Dark Down 38.3 189.0 Up 05:05:30 - 05:35:30 2797
Blythe 05:20:06 -30.7 Dark Down 38.2 193.7 Up 05:05:06 - 05:35:06 2790
Idyllwild 05:20:18 -29.5 Dark Down 38.4 191.3 Up 05:05:18 - 05:35:18 2786
Calipatria 05:20:11 -30.6 Dark Down 38.8 192.7 Up 05:05:11 - 05:35:11 2750
Yuma 05:20:05 -31.4 Dark Down 39.1 193.9 Up 05:05:05 - 05:35:05 2725

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, (2020/08/12 05:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 27.50 164
Nunki          18:55:15.9 -26:17:49  2.0 12.14 133
PPM 234283     18:17:11.6 -17:22:26  5.8  0.98 142
PPM 234414     18:21:09.1 -17:22:54  8.1  0.29 141
PPM 234408     18:21:00.3 -17:09:06  8.6  0.07 141
10JJ124        18:21:08.8 -17:05:41 14.0       141
Positions are for J2000

Event circumstances last updated at 2020/03/09 21:51:51 UT

Marc W. Buie, Southwest Research Institute

RECON