RECON: TNO occultation with 15VM173

Event between 15VM173 and star GA1060:00366446 with event index number of 1031158

Geocentric closest approach at 2020/12/26 07:59:52 UTC

J2000 position of star is 03:31:37.6 +17:04:16
Equinox of date position of star is 03:32:46.3 +17:08:19
Stellar brightness G=15.5, use SENSEUP=128
Star is 3 degrees from the moon. Moon is 87% illuminated.
TNO apparent brightness V=26.6

[RECON map]
TNO is 45.6 AU from the Sun and 44.8 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 330 seconds.
The 1-sigma cross-track error in the shadow position is 3451 km.
The sky-plane scale is 32508.1 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=345.2 km assuming a 5% albedo -- 3.2 sec chord
Diameter=140.9 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 15VM173, (2020/12/26 08:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.6 +16:32:59  0.8 15.39  18
Menkar         03:03:22.7 +04:10:15  2.5 14.84  13
PPM 119253     03:40:37.2 +16:36:12  6.2  1.94   4
PPM 119178     03:34:50.5 +17:23:55  8.5  0.55   3
PPM 119154     03:33:20.5 +17:14:16  9.5  0.16   3
15VM173        03:32:49.0 +17:08:29 15.5         3
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 2.7 sigma about the mid-time.
The median site spacing is 24.5 km RECON observability=1.0 and success probability=10.9%
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 07:56:48 -63.1 Dark Up 42.7 241.0 Up 07:41:48 - 08:11:48 4637
Kelowna 07:56:48 -63.5 Dark Up 43.0 241.2 Up 07:41:48 - 08:11:48 4598
Peachland 07:56:49 -63.6 Dark Up 43.2 240.9 Up 07:41:49 - 08:11:49 4587
Summerland 07:56:48 -63.7 Dark Up 43.2 241.2 Up 07:41:48 - 08:11:48 4573
Penticton 07:56:48 -63.8 Dark Up 43.2 241.3 Up 07:41:48 - 08:11:48 4566
Oliver 07:56:47 -64.2 Dark Up 43.3 241.6 Up 07:41:47 - 08:11:47 4532
Anarchist Mountain Observatory 07:56:46 -64.3 Dark Up 43.3 242.0 Up 07:41:46 - 08:11:46 4516
Tonasket 07:56:46 -64.6 Dark Up 43.5 242.1 Up 07:41:46 - 08:11:46 4485
Victoria 07:56:58 -64.6 Dark Up 45.9 238.1 Up 07:41:58 - 08:11:58 4460
Okanogan 07:56:46 -65.0 Dark Up 43.8 242.3 Up 07:41:46 - 08:11:46 4452
Brewster 07:56:46 -65.2 Dark Up 44.0 242.3 Up 07:41:46 - 08:11:46 4424
Manson/Chelan 07:56:47 -65.4 Dark Up 44.3 242.1 Up 07:41:47 - 08:11:47 4403
Entiat 07:56:46 -65.7 Dark Up 44.5 242.2 Up 07:41:46 - 08:11:46 4381
Wenatchee 07:56:46 -65.9 Dark Up 44.6 242.3 Up 07:41:46 - 08:11:46 4355
Ellensburg 07:56:46 -66.3 Dark Up 45.0 242.5 Up 07:41:46 - 08:11:46 4314
Yakima 07:56:46 -66.7 Dark Up 45.2 242.8 Up 07:41:46 - 08:11:46 4273
Toppenish/White Swan 07:56:45 -66.9 Dark Up 45.2 243.2 Up 07:41:45 - 08:11:45 4252
Pasco 07:56:40 -67.1 Dark Up 44.4 244.6 Up 07:41:40 - 08:11:40 4243
PNWRO 07:56:39 -67.3 Dark Up 44.4 245.0 Up 07:41:39 - 08:11:39 4219
Goldendale 07:56:45 -67.5 Dark Up 45.7 243.2 Up 07:41:45 - 08:11:45 4195
The Dalles 07:56:46 -67.7 Dark Up 46.0 243.1 Up 07:41:46 - 08:11:46 4172
Maupin 07:56:45 -68.1 Dark Up 46.1 243.5 Up 07:41:45 - 08:11:45 4130
Sisters 07:56:45 -68.9 Dark Up 46.8 243.9 Up 07:41:45 - 08:11:45 4040
Redmond 07:56:43 -69.0 Dark Up 46.6 244.3 Up 07:41:43 - 08:11:43 4038
Bend 07:56:43 -69.2 Dark Up 46.8 244.4 Up 07:41:43 - 08:11:43 4016
Oregon Observatory 07:56:44 -69.4 Dark Up 46.9 244.4 Up 07:41:44 - 08:11:44 3998
La Pine/Gilchrist 07:56:44 -69.6 Dark Up 47.1 244.5 Up 07:41:44 - 08:11:44 3977
North Lake 07:56:42 -70.0 Dark Up 46.8 245.6 Up 07:41:42 - 08:11:42 3934
Paisley 07:56:39 -70.6 Dark Up 46.8 246.4 Up 07:41:39 - 08:11:39 3878
Klamath Falls 07:56:43 -71.0 Dark Up 47.8 245.7 Up 07:41:43 - 08:11:43 3827
Lakeview 07:56:38 -71.1 Dark Up 46.9 247.1 Up 07:41:38 - 08:11:38 3826
Cedarville 07:56:37 -71.8 Dark Up 47.0 247.9 Up 07:41:37 - 08:11:37 3758
Niwot 07:55:47 -69.7 Dark Up 36.6 261.5 Up 07:40:47 - 08:10:47 3706
Fall River/Burney 07:56:40 -72.2 Dark Up 48.1 247.2 Up 07:41:40 - 08:11:40 3705
SwRI 07:55:48 -69.8 Dark Up 36.7 261.5 Up 07:40:48 - 08:10:48 3694
Susanville 07:56:36 -72.9 Dark Up 47.8 248.6 Up 07:41:36 - 08:11:36 3641
Greenville 07:56:37 -73.1 Dark Up 48.1 248.6 Up 07:41:37 - 08:11:37 3611
Gimple 07:56:37 -73.1 Dark Up 48.0 248.7 Up 07:41:37 - 08:11:37 3611
Quincy 07:56:36 -73.3 Dark Up 48.2 248.8 Up 07:41:36 - 08:11:36 3590
Portola 07:56:34 -73.5 Dark Up 47.9 249.4 Up 07:41:34 - 08:11:34 3578
Reno 07:56:32 -73.8 Dark Up 47.5 250.3 Up 07:41:32 - 08:11:32 3552
Carson City 07:56:32 -74.1 Dark Up 47.6 250.7 Up 07:41:32 - 08:11:32 3514
Yerington 07:56:30 -74.4 Dark Up 47.2 251.4 Up 07:41:30 - 08:11:30 3495
Gardnerville 07:56:31 -74.4 Dark Up 47.7 250.9 Up 07:41:31 - 08:11:31 3488
Hawthorne 07:56:27 -74.8 Dark Up 47.0 252.4 Up 07:41:27 - 08:11:27 3448
Tonopah 07:56:21 -75.2 Dark Up 46.1 254.0 Up 07:41:21 - 08:11:21 3404
Lee Vining 07:56:27 -75.4 Dark Up 47.5 252.5 Up 07:41:27 - 08:11:27 3387
Bishop 07:56:25 -76.0 Dark Up 47.1 253.7 Up 07:41:25 - 08:11:25 3325
Beatty 07:56:18 -76.3 Dark Up 46.0 255.5 Up 07:41:18 - 08:11:18 3283
Indian Springs 07:56:14 -76.5 Dark Up 45.3 256.7 Up 07:41:14 - 08:11:14 3253
Henderson 07:56:10 -76.9 Dark Up 44.9 257.8 Up 07:41:10 - 08:11:10 3200
Patrick 07:56:07 -77.2 Dark Up 44.1 259.2 Up 07:41:07 - 08:11:07 3139
Searchlight/Boulder City 07:56:10 -77.4 Dark Up 44.9 258.4 Up 07:41:10 - 08:11:10 3139
Kingman/Dolan Springs 07:56:07 -77.4 Dark Up 44.3 259.3 Up 07:41:07 - 08:11:07 3114
DCO 07:56:04 -77.2 Dark Up 43.6 260.0 Up 07:41:04 - 08:11:04 3111
Laughlin/Bullhead City 07:56:09 -77.6 Dark Up 44.7 258.9 Up 07:41:09 - 08:11:09 3109
CPSLO 07:56:31 -77.9 Dark Up 49.5 254.1 Up 07:41:31 - 08:11:31 3098
Mohave Valley 07:56:09 -77.9 Dark Up 44.8 259.2 Up 07:41:09 - 08:11:09 3079
Lake Havasu City 07:56:07 -78.2 Dark Up 44.6 259.7 Up 07:41:07 - 08:11:07 3038
Parker 07:56:07 -78.5 Dark Up 44.7 260.1 Up 07:41:07 - 08:11:07 3000
Wildwood 07:56:22 -79.2 Dark Up 48.1 257.0 Up 07:41:22 - 08:11:22 2974
George/Scottsdale 07:55:57 -78.0 Dark Up 42.8 262.1 Up 07:40:57 - 08:10:57 2971
Idyllwild 07:56:14 -79.4 Dark Up 46.7 258.8 Up 07:41:14 - 08:11:14 2944
Blythe 07:56:06 -79.1 Dark Up 45.0 260.4 Up 07:41:06 - 08:11:06 2942
Calipatria 07:56:10 -79.8 Dark Up 45.9 260.3 Up 07:41:10 - 08:11:10 2883
Yuma 07:56:06 -79.9 Dark Up 45.2 261.3 Up 07:41:06 - 08:11:06 2842

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 15VM173, (2020/12/26 08:00UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 15.39  18
Menkar         03:02:16.8 +04:05:21  2.5 14.84  13
PPM 119253     03:39:25.8 +16:32:11  6.2  1.94   4
PPM 119178     03:33:38.9 +17:19:45  8.5  0.55   3
PPM 119154     03:32:09.0 +17:10:04  9.5  0.16   3
15VM173        03:31:37.6 +17:04:16 15.5         3
Positions are for J2000

Event circumstances last updated at 2020/03/15 20:10:42 UT

Marc W. Buie, Southwest Research Institute

RECON