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 05:20:35 UTC

J2000 position of star is 18:21:08.8 -17:05:41
Equinox of date position of star is 18:22:16.5 -17:05:04
Stellar brightness G=14.0, use SENSEUP=64
Star is 141 degrees from the moon. Moon is 45% illuminated.
TNO apparent brightness V=20.7

[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 3400 km.
The sky-plane scale is 17649.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=284.5 km assuming a 5% albedo -- 19.2 sec chord
Diameter=116.1 km assuming a 30% albedo -- 7.8 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 -26:16:09  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 13.4 km RECON observability=1.0 and success probability=6.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:20:50 -16.2 AT Down 22.7 186.9 Low 05:05:50 - 05:35:50 3670
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
Okanagan Falls 05:20:52 -16.5 AT Down 23.3 186.7 Low 05:05:52 - 05:35:52 3645
Oliver 05:20:50 -16.6 AT Down 23.5 186.8 Low 05:05:50 - 05:35:50 3638
Anarchist Mountain Observatory 05:20:49 -16.8 AT Down 23.6 187.0 Low 05:05:49 - 05:35:49 3632
Oroville 05:20:49 -16.9 AT Down 23.7 186.9 Low 05:05:49 - 05:35:49 3628
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 3588
Manson/Chelan 05:20:52 -17.3 AT Down 24.8 186.2 Low 05:05:52 - 05:35:52 3576
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 3553
Ellensburg 05:20:53 -17.8 AT Down 25.7 185.9 Low 05:05:53 - 05:35:53 3532
Yakima 05:20:53 -18.1 Dark Down 26.1 185.9 Low 05:05:53 - 05:35:53 3513
Pasco 05:20:45 -19.0 Dark Down 26.3 187.4 Low 05:05:45 - 05:35:45 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 3495
George/Umatilla 05:20:46 -19.2 Dark Down 26.7 187.2 Low 05:05:46 - 05:35:46 3488
Goldendale 05:20:54 -18.6 Dark Down 26.9 185.6 Low 05:05:54 - 05:35:54 3473
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 3439
Madras/Culver 05:20:54 -19.3 Dark Down 28.1 185.4 Low 05:05:54 - 05:35:54 3411
Redmond 05:20:54 -19.5 Dark Down 28.5 185.3 Low 05:05:54 - 05:35:54 3392
Sisters 05:20:56 -19.3 Dark Down 28.5 184.9 Low 05:05:56 - 05:35:56 3390
Bend 05:20:54 -19.6 Dark Down 28.7 185.2 Low 05:05:54 - 05:35:54 3380
Oregon Observatory 05:20:55 -19.7 Dark Down 28.9 185.0 Low 05:05:55 - 05:35:55 3370
La Pine/Gilchrist 05:20:55 -19.8 Dark Down 29.1 185.0 Low 05:05:55 - 05:35:55 3358
North Lake 05:20:52 -20.4 Dark Down 29.5 185.7 Low 05:05:52 - 05:35:52 3339
Paisley 05:20:49 -21.0 Dark Down 30.0 186.1 Low 05:05:49 - 05:35:49 3312
Chiloquin 05:20:56 -20.4 Dark Down 30.2 184.7 Up 05:05:56 - 05:35:56 3295
Lakeview 05:20:48 -21.4 Dark Down 30.5 186.3 Up 05:05:48 - 05:35:48 3286
Klamath Falls 05:20:56 -20.7 Dark Down 30.5 184.8 Up 05:05:56 - 05:35:56 3277
Tulelake 05:20:54 -21.0 Dark Down 30.8 185.1 Up 05:05:54 - 05:35:54 3264
Cedarville 05:20:46 -22.0 Dark Down 31.1 186.5 Up 05:05:46 - 05:35:46 3250
Niwot 05:19:23 -29.8 Dark Down 29.7 202.7 Low 05:04:23 - 05:34:23 3231
SwRI 05:19:24 -29.8 Dark Down 29.8 202.6 Low 05:04:24 - 05:34:24 3225
Fall River/Burney 05:20:52 -21.7 Dark Down 31.7 185.2 Up 05:05:52 - 05:35:52 3213
Susanville 05:20:47 -22.6 Dark Down 32.3 186.1 Up 05:05:47 - 05:35:47 3182
Gimple 05:20:49 -22.6 Dark Down 32.6 185.9 Up 05:05:49 - 05:35:49 3164
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 3148
Reno 05:20:42 -23.6 Dark Down 33.1 187.1 Up 05:05:42 - 05:35:42 3137
Carson City 05:20:42 -23.9 Dark Down 33.4 187.1 Up 05:05:42 - 05:35:42 3115
Yerington 05:20:38 -24.4 Dark Down 33.6 187.8 Up 05:05:38 - 05:35:38 3108
Gardnerville 05:20:41 -24.1 Dark Down 33.7 187.2 Up 05:05:41 - 05:35:41 3101
Hawthorne 05:20:34 -25.0 Dark Down 34.0 188.5 Up 05:05:34 - 05:35:34 3084
Tonopah 05:20:27 -26.1 Dark Down 34.2 190.1 Up 05:05:27 - 05:35:27 3064
Lee Vining 05:20:37 -25.1 Dark Down 34.6 188.0 Up 05:05:37 - 05:35:37 3045
Bishop 05:20:32 -25.9 Dark Down 35.1 188.9 Up 05:05:32 - 05:35:32 3013
Beatty 05:20:22 -27.1 Dark Down 35.3 190.8 Up 05:05:22 - 05:35:22 2994
Indian Springs 05:20:16 -28.0 Dark Down 35.5 192.0 Up 05:05:16 - 05:35:16 2980
Lone Pine 05:20:29 -26.7 Dark Down 35.8 189.3 Up 05:05:29 - 05:35:29 2967
Henderson 05:20:11 -28.7 Dark Down 35.9 192.9 Up 05:05:11 - 05:35:11 2949
Patrick 05:20:04 -29.8 Dark Down 36.3 194.3 Up 05:05:04 - 05:35:04 2914
Searchlight/Boulder City 05:20:10 -29.2 Dark Down 36.4 193.1 Up 05:05:10 - 05:35:10 2912
Kingman/Dolan Springs 05:20:04 -29.8 Dark Down 36.5 194.1 Up 05:05:04 - 05:35:04 2899
DCO 05:19:59 -30.4 Dark Down 36.4 195.1 Up 05:04:59 - 05:34:59 2897
Laughlin/Bullhead City 05:20:07 -29.6 Dark Down 36.6 193.5 Up 05:05:07 - 05:35:07 2894
Mohave Valley 05:20:07 -29.8 Dark Down 36.9 193.5 Up 05:05:07 - 05:35:07 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 05:20:05 -30.5 Dark Down 37.6 194.0 Up 05:05:05 - 05:35:05 2827
Wildwood 05:20:30 -28.2 Dark Down 38.3 189.0 Up 05:05:30 - 05:35:30 2796
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 2785
Calipatria 05:20:11 -30.6 Dark Down 38.8 192.7 Up 05:05:11 - 05:35:11 2750
Yuma 05:20:04 -31.4 Dark Down 39.1 193.9 Up 05:05:04 - 05:35:04 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 2019/06/08 00:13:28 UT

Marc W. Buie, Southwest Research Institute

RECON