RECON: TNO occultation with 471136

Event between (471136) 10EO65 and star GA0560:21694384 with event index number of 329508

Geocentric closest approach at 2020/08/10 04:10:28 UTC

J2000 position of star is 17:31:57.3 -32:12:46
Equinox of date position of star is 17:33:17.8 -32:13:35
Stellar brightness G=15.8, use SENSEUP=128
Star is 126 degrees from the moon. Moon is 64% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 15.1 AU from the Sun and 14.5 AU from the Earth.
The TNO is moving 9.5 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 264 seconds.
The 1-sigma cross-track error in the shadow position is 2116 km.
The sky-plane scale is 10497.3 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=75.9 km assuming a 5% albedo -- 6.3 sec chord
Diameter=31.0 km assuming a 30% albedo -- 2.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 471136, (2020/08/10 04:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.5 -26:28:34  0.9 14.79 141
34Ups Sco      17:32:10.0 -37:18:37  2.7  5.09 125
PPM 296449     17:33:08.9 -33:43:01  6.4  1.49 126
PPM 296437     17:32:44.5 -31:59:01  8.2  0.27 126
PPM 296458     17:33:33.9 -32:17:49  8.9  0.09 126
471136         17:33:17.9 -32:13:35 15.8       126
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 3.4 sigma about the mid-time.
The median site spacing is 14.7 km RECON observability=0.3 and success probability=2.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 04:14:18 -21.6 Dark Down 16.4 192.8 Really Low 03:59:18 - 04:29:18 3646
SwRI 04:14:19 -21.6 Dark Down 16.6 192.7 Really Low 03:59:19 - 04:29:19 3639
Clarence Fulton 04:16:20 -7.8 NT Down 7.5 180.8 Really Low 04:01:20 - 04:31:20 3289
Kelowna 04:16:18 -7.9 NT Down 7.9 180.6 Really Low 04:01:18 - 04:31:18 3278
Anarchist Mountain Observatory 04:16:18 -8.5 NT Down 8.8 180.7 Really Low 04:01:18 - 04:31:18 3271
Penticton 04:16:19 -8.0 NT Down 8.3 180.6 Really Low 04:01:19 - 04:31:19 3270
Summerland 04:16:19 -8.0 NT Down 8.2 180.5 Really Low 04:01:19 - 04:31:19 3267
Oliver 04:16:18 -8.2 NT Down 8.6 180.5 Really Low 04:01:18 - 04:31:18 3265
Peachland 04:16:21 -7.8 NT Down 8.0 180.4 Really Low 04:01:21 - 04:31:21 3265
Tonasket 04:16:17 -8.6 NT Down 9.1 180.7 Really Low 04:01:17 - 04:31:17 3263
Okanogan 04:16:17 -8.7 NT Down 9.4 180.5 Really Low 04:01:17 - 04:31:17 3252
Brewster 04:16:19 -8.8 NT Down 9.7 180.4 Really Low 04:01:19 - 04:31:19 3240
PNWRO 04:16:12 -10.4 NT Down 11.8 181.1 Really Low 04:01:12 - 04:31:12 3240
Pasco 04:16:13 -10.2 NT Down 11.5 180.9 Really Low 04:01:13 - 04:31:13 3235
Manson/Chelan 04:16:21 -8.7 NT Down 9.9 180.0 Really Low 04:01:21 - 04:31:21 3222
Entiat 04:16:23 -8.8 NT Down 10.1 180.0 Really Low 04:01:23 - 04:31:23 3216
George/Scottsdale 04:14:50 -21.9 Dark Down 23.6 187.4 Low 03:59:50 - 04:29:50 3211
Wenatchee 04:16:21 -8.9 NT Down 10.4 179.9 Really Low 04:01:21 - 04:31:21 3208
DCO 04:15:03 -20.3 Dark Down 22.4 186.2 Low 04:00:03 - 04:30:03 3202
Ellensburg 04:16:23 -9.0 NT Down 10.8 179.7 Really Low 04:01:23 - 04:31:23 3191
Toppenish/White Swan 04:16:20 -9.4 NT Down 11.4 179.8 Really Low 04:01:20 - 04:31:20 3186
Yakima 04:16:22 -9.2 NT Down 11.2 179.7 Really Low 04:01:22 - 04:31:22 3183
Patrick 04:15:11 -19.6 Dark Down 22.1 185.5 Low 04:00:11 - 04:30:11 3181
Kingman/Dolan Springs 04:15:12 -19.6 Dark Down 22.4 185.4 Low 04:00:12 - 04:30:12 3166
Goldendale 04:16:23 -9.5 NT Down 12.0 179.5 Really Low 04:01:23 - 04:31:23 3158
Henderson 04:15:20 -18.6 Dark Down 21.6 184.5 Low 04:00:20 - 04:30:20 3153
Laughlin/Bullhead City 04:15:16 -19.3 Dark Down 22.4 184.9 Low 04:00:16 - 04:30:16 3142
Indian Springs 04:15:28 -17.8 AT Down 21.1 183.9 Low 04:00:28 - 04:30:28 3139
The Dalles 04:16:24 -9.4 NT Down 12.2 179.2 Really Low 04:01:24 - 04:31:24 3137
Searchlight/Boulder City 04:15:20 -18.9 Dark Down 22.2 184.6 Low 04:00:20 - 04:30:20 3137
Maupin 04:16:24 -9.7 NT Down 12.6 179.3 Really Low 04:01:24 - 04:31:24 3133
Mohave Valley 04:15:16 -19.5 Dark Down 22.7 184.9 Low 04:00:16 - 04:30:16 3133
Lake Havasu City 04:15:11 -19.9 Dark Down 23.1 185.2 Low 04:00:11 - 04:30:11 3130
Parker 04:15:10 -20.1 Dark Down 23.4 185.2 Low 04:00:10 - 04:30:10 3119
Tonopah 04:15:44 -16.0 AT Down 19.7 182.6 Really Low 04:00:44 - 04:30:44 3118
Redmond 04:16:23 -10.1 NT Down 13.5 179.2 Really Low 04:01:23 - 04:31:23 3110
Victoria 04:16:41 -6.6 NT Down 9.2 177.3 Really Low 04:01:41 - 04:31:41 3102
Beatty 04:15:37 -16.9 AT Down 20.8 183.0 Low 04:00:37 - 04:30:37 3102
Paisley 04:16:17 -11.4 NT Down 15.1 179.7 Really Low 04:01:17 - 04:31:17 3099
Bend 04:16:23 -10.2 NT Down 13.7 179.0 Really Low 04:01:23 - 04:31:23 3099
North Lake 04:16:20 -10.8 NT Down 14.5 179.4 Really Low 04:01:20 - 04:31:20 3097
Lakeview 04:16:13 -11.8 NT Down 15.6 179.8 Really Low 04:01:13 - 04:31:13 3095
Sisters 04:16:26 -9.9 NT Down 13.5 178.8 Really Low 04:01:26 - 04:31:26 3093
Oregon Observatory 04:16:25 -10.2 NT Down 13.9 178.9 Really Low 04:01:25 - 04:31:25 3089
Blythe 04:15:11 -20.2 Dark Down 24.0 184.9 Low 04:00:11 - 04:30:11 3087
Cedarville 04:16:12 -12.2 AT Down 16.3 180.0 Really Low 04:01:12 - 04:31:12 3086
La Pine/Gilchrist 04:16:25 -10.3 NT Down 14.1 178.9 Really Low 04:01:25 - 04:31:25 3082
Hawthorne 04:15:54 -14.8 AT Down 19.2 181.3 Really Low 04:00:54 - 04:30:54 3069
Yerington 04:16:01 -14.3 AT Down 18.8 180.9 Really Low 04:01:01 - 04:31:01 3059
Yuma 04:15:08 -20.7 Dark Down 24.9 184.9 Low 04:00:08 - 04:30:08 3051
Reno 04:16:07 -13.5 AT Down 18.2 180.3 Really Low 04:01:07 - 04:31:07 3046
Bishop 04:15:50 -15.6 AT Down 20.4 181.5 Low 04:00:50 - 04:30:50 3043
Carson City 04:16:04 -13.7 AT Down 18.6 180.3 Really Low 04:01:04 - 04:31:04 3036
Susanville 04:16:14 -12.5 AT Down 17.4 179.6 Really Low 04:01:14 - 04:31:14 3033
Klamath Falls 04:16:25 -10.9 NT Down 15.5 178.6 Really Low 04:01:25 - 04:31:25 3033
Gardnerville 04:16:04 -13.9 AT Down 18.8 180.3 Really Low 04:01:04 - 04:31:04 3031
Lee Vining 04:15:58 -14.8 AT Down 19.8 180.9 Really Low 04:00:58 - 04:30:58 3029
Calipatria 04:15:18 -19.9 Dark Down 24.5 184.1 Low 04:00:18 - 04:30:18 3027
Portola 04:16:12 -13.0 AT Down 18.0 179.7 Really Low 04:01:12 - 04:31:12 3024
Fall River/Burney 04:16:20 -11.7 NT Down 16.7 178.9 Really Low 04:01:20 - 04:31:20 3017
Gimple 04:16:15 -12.6 AT Down 17.6 179.4 Really Low 04:01:15 - 04:31:15 3015
Greenville 04:16:16 -12.5 AT Down 17.6 179.3 Really Low 04:01:16 - 04:31:16 3012
Quincy 04:16:15 -12.6 AT Down 17.8 179.3 Really Low 04:01:15 - 04:31:15 3006
Idyllwild 04:15:29 -18.8 Dark Down 24.0 183.0 Low 04:00:29 - 04:30:29 2996
Wildwood 04:15:45 -17.3 AT Down 23.7 181.3 Low 04:00:45 - 04:30:45 2919
CPSLO 04:16:03 -15.3 AT Down 22.5 179.5 Low 04:01:03 - 04:31:03 2865

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 471136, (2020/08/10 04:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 14.79 141
34Ups Sco      17:30:45.8 -37:17:46  2.7  5.09 125
PPM 296449     17:31:47.3 -33:42:12  6.4  1.49 126
PPM 296437     17:31:24.0 -31:58:11  8.2  0.27 126
PPM 296458     17:32:13.2 -32:17:00  8.9  0.09 126
471136         17:31:57.3 -32:12:46 15.8       126
Positions are for J2000

Event circumstances last updated at 2020/08/01 21:03:04 UT

Marc W. Buie, Southwest Research Institute

RECON