RECON: TNO occultation with 10JJ124

Event between 10JJ124 and star GA0720:21933368 with event index number of 288474

Geocentric closest approach at 2020/07/15 05:16:45 UTC

J2000 position of star is 18:24:10.5 -17:10:49
Equinox of date position of star is 18:25:20.9 -17:10:05
Stellar brightness G=16.2, use SENSEUP=128
Star is 132 degrees from the moon. Moon is 29% illuminated.
TNO apparent brightness V=24.0

[RECON map]
TNO is 25.0 AU from the Sun and 24.1 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 188 seconds.
The 1-sigma cross-track error in the shadow position is 3372 km.
The sky-plane scale is 17454.8 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=284.5 km assuming a 5% albedo -- 2.7 sec chord
Diameter=116.1 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10JJ124, (2020/07/15 05:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.2 -26:28:33  0.9 28.12 157
Nunki          18:56:32.2 -26:16:10  2.0 11.62 125
PPM 234386     18:21:19.8 -15:49:18  5.2  1.66 133
PPM 234457     18:24:12.8 -17:39:55  8.1  0.57 132
PPM 234505     18:26:00.0 -17:14:11  9.1  0.17 132
10JJ124        18:25:22.1 -17:10:04 16.2       132
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 4.8 sigma about the mid-time.
The median site spacing is 12.0 km RECON observability=0.5 and success probability=2.4%
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 05:18:25 -9.6 NT Down 19.8 157.4 Really Low 05:03:25 - 05:33:25 6855
Kelowna 05:18:26 -9.8 NT Down 20.1 157.2 Low 05:03:26 - 05:33:26 6834
Peachland 05:18:28 -9.8 NT Down 20.1 156.9 Low 05:03:28 - 05:33:28 6824
Summerland 05:18:28 -10.0 NT Down 20.3 157.0 Low 05:03:28 - 05:33:28 6818
Penticton 05:18:27 -10.1 NT Down 20.4 157.1 Low 05:03:27 - 05:33:27 6816
Oliver 05:18:27 -10.3 NT Down 20.7 157.0 Low 05:03:27 - 05:33:27 6799
Anarchist Mountain Observatory 05:18:27 -10.5 NT Down 20.9 157.2 Low 05:03:27 - 05:33:27 6794
Tonasket 05:18:28 -10.8 NT Down 21.2 157.1 Low 05:03:28 - 05:33:28 6776
Okanogan 05:18:28 -11.0 NT Down 21.5 156.9 Low 05:03:28 - 05:33:28 6757
Brewster 05:18:30 -11.1 NT Down 21.6 156.6 Low 05:03:30 - 05:33:30 6739
Manson/Chelan 05:18:31 -11.1 NT Down 21.7 156.3 Low 05:03:31 - 05:33:31 6722
Entiat 05:18:31 -11.2 NT Down 21.9 156.2 Low 05:03:31 - 05:33:31 6709
Victoria 05:18:40 -9.2 NT Down 20.3 153.2 Low 05:03:40 - 05:33:40 6700
Wenatchee 05:18:33 -11.4 NT Down 22.1 156.0 Low 05:03:33 - 05:33:33 6694
Ellensburg 05:18:34 -11.6 NT Down 22.5 155.7 Low 05:03:34 - 05:33:34 6668
Pasco 05:18:30 -12.8 AT Down 23.5 157.0 Low 05:03:30 - 05:33:30 6652
Yakima 05:18:34 -11.9 NT Down 22.8 155.6 Low 05:03:34 - 05:33:34 6646
PNWRO 05:18:29 -13.1 AT Down 23.8 157.2 Low 05:03:29 - 05:33:29 6643
Toppenish/White Swan 05:18:33 -12.2 AT Down 23.1 155.8 Low 05:03:33 - 05:33:33 6637
Goldendale 05:18:35 -12.4 AT Down 23.4 155.3 Low 05:03:35 - 05:33:35 6599
The Dalles 05:18:37 -12.4 AT Down 23.5 154.9 Low 05:03:37 - 05:33:37 6580
Maupin 05:18:36 -12.8 AT Down 24.0 154.9 Low 05:03:36 - 05:33:36 6558
Niwot 05:17:46 -23.4 Dark Down 32.2 170.7 Up 05:02:46 - 05:32:46 6516
SwRI 05:17:46 -23.5 Dark Down 32.3 170.6 Up 05:02:46 - 05:32:46 6507
Redmond 05:18:38 -13.4 AT Down 24.7 154.6 Low 05:03:38 - 05:33:38 6504
Sisters 05:18:39 -13.2 AT Down 24.6 154.2 Low 05:03:39 - 05:33:39 6499
Bend 05:18:39 -13.5 AT Down 24.9 154.5 Low 05:03:39 - 05:33:39 6489
Oregon Observatory 05:18:39 -13.6 AT Down 25.0 154.3 Low 05:03:39 - 05:33:39 6477
La Pine/Gilchrist 05:18:40 -13.7 AT Down 25.2 154.2 Low 05:03:40 - 05:33:40 6464
North Lake 05:18:39 -14.3 AT Down 25.8 154.7 Low 05:03:39 - 05:33:39 6449
Paisley 05:18:38 -14.9 AT Down 26.4 154.9 Low 05:03:38 - 05:33:38 6422
Lakeview 05:18:38 -15.4 AT Down 26.9 155.0 Low 05:03:38 - 05:33:38 6395
Klamath Falls 05:18:42 -14.7 AT Down 26.4 153.6 Low 05:03:42 - 05:33:42 6370
Cedarville 05:18:38 -16.0 AT Down 27.5 155.1 Low 05:03:38 - 05:33:38 6357
Fall River/Burney 05:18:42 -15.8 AT Down 27.6 153.7 Low 05:03:42 - 05:33:42 6303
Susanville 05:18:40 -16.6 AT Down 28.4 154.3 Low 05:03:40 - 05:33:40 6277
Gimple 05:18:42 -16.7 AT Down 28.6 154.1 Low 05:03:42 - 05:33:42 6255
Greenville 05:18:41 -16.7 AT Down 28.5 154.0 Low 05:03:41 - 05:33:41 6254
Portola 05:18:41 -17.1 AT Down 29.0 154.4 Low 05:03:41 - 05:33:41 6242
Quincy 05:18:42 -16.8 AT Down 28.7 153.9 Low 05:03:42 - 05:33:42 6241
Reno 05:18:39 -17.7 AT Down 29.5 155.0 Low 05:03:39 - 05:33:39 6237
Carson City 05:18:38 -18.0 AT Down 29.8 154.9 Low 05:03:38 - 05:33:38 6214
Yerington 05:18:37 -18.4 Dark Down 30.2 155.5 Up 05:03:37 - 05:33:37 6213
Gardnerville 05:18:38 -18.2 Dark Down 30.0 154.9 Up 05:03:38 - 05:33:38 6199
Hawthorne 05:18:35 -19.0 Dark Down 30.8 156.0 Up 05:03:35 - 05:33:35 6192
Tonopah 05:18:31 -20.1 Dark Down 31.6 157.3 Up 05:03:31 - 05:33:31 6188
Lee Vining 05:18:37 -19.2 Dark Down 31.1 155.3 Up 05:03:37 - 05:33:37 6146
Bishop 05:18:35 -20.0 Dark Down 31.9 155.9 Up 05:03:35 - 05:33:35 6118
Beatty 05:18:30 -21.2 Dark Down 32.8 157.5 Up 05:03:30 - 05:33:30 6118
Indian Springs 05:18:26 -22.0 Dark Down 33.5 158.6 Up 05:03:26 - 05:33:26 6115
Henderson 05:18:23 -22.8 Dark Down 34.1 159.2 Up 05:03:23 - 05:33:23 6091
Patrick 05:18:20 -23.8 Dark Down 35.0 160.3 Up 05:03:20 - 05:33:20 6068
DCO 05:18:17 -24.4 Dark Down 35.5 161.0 Up 05:03:17 - 05:33:17 6059
Searchlight/Boulder City 05:18:23 -23.2 Dark Down 34.7 159.1 Up 05:03:23 - 05:33:23 6053
Kingman/Dolan Springs 05:18:20 -23.9 Dark Down 35.2 160.0 Up 05:03:20 - 05:33:20 6049
Laughlin/Bullhead City 05:18:22 -23.7 Dark Down 35.1 159.5 Up 05:03:22 - 05:33:22 6037
Mohave Valley 05:18:23 -23.9 Dark Down 35.3 159.4 Up 05:03:23 - 05:33:23 6018
Lake Havasu City 05:18:22 -24.3 Dark Down 35.8 159.6 Up 05:03:22 - 05:33:22 5994
George/Scottsdale 05:18:12 -26.1 Dark Down 37.2 162.1 Up 05:03:12 - 05:33:12 5983
Parker 05:18:22 -24.6 Dark Down 36.1 159.5 Up 05:03:22 - 05:33:22 5969
CPSLO 05:18:45 -20.4 Dark Down 33.0 153.0 Up 05:03:45 - 05:33:45 5928
Blythe 05:18:23 -24.9 Dark Down 36.5 159.0 Up 05:03:23 - 05:33:23 5926
Idyllwild 05:18:32 -23.7 Dark Down 35.8 156.7 Up 05:03:32 - 05:33:32 5895
Wildwood 05:18:38 -22.4 Dark Down 34.8 154.8 Up 05:03:38 - 05:33:38 5883
Calipatria 05:18:27 -24.8 Dark Down 36.7 157.9 Up 05:03:27 - 05:33:27 5872
Yuma 05:18:23 -25.6 Dark Down 37.4 158.7 Up 05:03:23 - 05:33:23 5857

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, (2020/07/15 05:17UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.12 157
Nunki          18:55:15.9 -26:17:49  2.0 11.62 125
PPM 234386     18:20:08.9 -15:49:55  5.2  1.66 133
PPM 234457     18:23:00.9 -17:40:38  8.1  0.57 132
PPM 234505     18:24:48.4 -17:14:57  9.1  0.17 132
10JJ124        18:24:10.5 -17:10:49 16.2       132
Positions are for J2000

Event circumstances last updated at 2020/03/09 21:36:32 UT

Marc W. Buie, Southwest Research Institute

RECON