RECON: TNO occultation with 04TV357

Event between 04TV357 and star GA1100:00890291 with event index number of 1000838

Geocentric closest approach at 2020/11/15 11:15:08 UTC

J2000 position of star is 05:06:38.4 +21:40:39
Equinox of date position of star is 05:07:46.9 +21:42:06
Stellar brightness G=15.5, use SENSEUP=128
Star is 160 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 34.7 AU from the Sun and 33.8 AU from the Earth.
The TNO is moving 22.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 89 seconds.
The 1-sigma cross-track error in the shadow position is 1261 km.
The sky-plane scale is 24531.9 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=267.9 km assuming a 5% albedo -- 12.2 sec chord
Diameter=109.4 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 04TV357, (2020/11/15 11:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:07.3 +16:32:59  0.8  8.91 167
Alnath         05:27:36.8 +28:37:23  1.6  8.23 154
102Iot Tau     05:04:20.7 +21:37:05  4.6  0.83 160
PPM 094029     05:05:37.1 +21:40:16  8.3  0.53 160
PPM 094091     05:09:29.0 +21:50:20  8.9  0.39 159
PPM 094082     05:09:04.2 +21:49:39 11.0  0.30 159
04TV357        05:07:53.4 +21:42:14 15.5       159
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 5.0 sigma about the mid-time.
The median site spacing is 24.4 km RECON observability=1.0 and success probability=9.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 11:13:23 -37.9 Dark Down 54.5 227.3 Up 11:05:30 - 11:21:15 4026
Summerland 11:13:24 -38.1 Dark Down 54.7 226.8 Up 11:05:31 - 11:21:16 4021
Penticton 11:13:23 -38.1 Dark Down 54.9 227.4 Up 11:05:30 - 11:21:15 3989
Okanagan Falls 11:13:22 -38.1 Dark Down 55.0 227.6 Up 11:05:30 - 11:21:15 3971
Oliver 11:13:23 -38.2 Dark Down 55.1 227.8 Up 11:05:30 - 11:21:15 3954
Anarchist Mountain Observatory 11:13:22 -38.1 Dark Down 55.1 228.2 Up 11:05:30 - 11:21:15 3938
Oroville 11:13:22 -38.2 Dark Down 55.2 228.2 Up 11:05:30 - 11:21:15 3930
Tonasket 11:13:21 -38.2 Dark Down 55.4 228.5 Up 11:05:29 - 11:21:14 3907
Okanogan 11:13:22 -38.4 Dark Down 55.7 228.6 Up 11:05:30 - 11:21:15 3872
Brewster 11:13:22 -38.6 Dark Down 55.9 228.6 Up 11:05:30 - 11:21:15 3845
Manson/Chelan 11:13:23 -38.9 Dark Down 56.3 228.4 Up 11:05:31 - 11:21:16 3823
Entiat 11:13:23 -39.0 Dark Down 56.4 228.5 Up 11:05:30 - 11:21:15 3800
Wenatchee 11:13:23 -39.2 Dark Down 56.7 228.7 Up 11:05:31 - 11:21:16 3774
Ellensburg 11:13:24 -39.4 Dark Down 57.0 228.8 Up 11:05:31 - 11:21:16 3732
Yakima 11:13:23 -39.5 Dark Down 57.3 229.3 Up 11:05:31 - 11:21:16 3690
Toppenish/White Swan 11:13:22 -39.5 Dark Down 57.4 229.8 Up 11:05:30 - 11:21:15 3669
Pasco 11:13:18 -38.7 Dark Down 56.8 231.7 Up 11:05:25 - 11:21:10 3660
PNWRO 11:13:17 -38.6 Dark Down 56.8 232.3 Up 11:05:25 - 11:21:10 3635
George/Umatilla 11:13:18 -38.9 Dark Down 57.1 231.8 Up 11:05:26 - 11:21:11 3625
Goldendale 11:13:23 -39.9 Dark Down 58.0 229.8 Up 11:05:31 - 11:21:16 3611
The Dalles 11:13:24 -40.2 Dark Down 58.3 229.6 Up 11:05:32 - 11:21:17 3587
Maupin 11:13:23 -40.3 Dark Down 58.5 230.3 Up 11:05:31 - 11:21:16 3545
Madras/Culver 11:13:23 -40.4 Dark Down 58.9 230.9 Up 11:05:30 - 11:21:15 3488
Sisters 11:13:24 -40.8 Dark Down 59.3 230.7 Up 11:05:32 - 11:21:17 3453
Redmond 11:13:23 -40.6 Dark Down 59.1 231.3 Up 11:05:30 - 11:21:15 3451
Bend 11:13:23 -40.7 Dark Down 59.3 231.4 Up 11:05:31 - 11:21:16 3428
Oregon Observatory 11:13:24 -40.8 Dark Down 59.5 231.4 Up 11:05:32 - 11:21:17 3410
La Pine/Gilchrist 11:13:24 -40.9 Dark Down 59.7 231.6 Up 11:05:31 - 11:21:16 3389
North Lake 11:13:21 -40.6 Dark Down 59.6 233.0 Up 11:05:29 - 11:21:14 3345
Paisley 11:13:19 -40.5 Dark Down 59.7 234.3 Up 11:05:27 - 11:21:12 3288
Chiloquin 11:13:24 -41.4 Dark Down 60.6 232.6 Up 11:05:32 - 11:21:17 3272
Klamath Falls 11:13:23 -41.5 Dark Down 60.7 233.2 Up 11:05:31 - 11:21:16 3236
Lakeview 11:13:18 -40.5 Dark Down 59.9 235.3 Up 11:05:26 - 11:21:11 3235
Tulelake 11:13:22 -41.3 Dark Down 60.7 234.0 Up 11:05:30 - 11:21:15 3209
Cedarville 11:13:18 -40.5 Dark Down 60.2 236.5 Up 11:05:25 - 11:21:10 3167
Niwot 11:12:27 -29.5 Dark Down 50.5 254.7 Up 11:04:35 - 11:20:20 3120
Fall River/Burney 11:13:22 -41.4 Dark Down 61.2 235.5 Up 11:05:29 - 11:21:14 3113
Susanville 11:13:18 -41.0 Dark Down 61.1 237.4 Up 11:05:26 - 11:21:11 3048
Greenville 11:13:19 -41.3 Dark Down 61.4 237.5 Up 11:05:27 - 11:21:12 3018
Gimple 11:13:19 -41.2 Dark Down 61.4 237.6 Up 11:05:26 - 11:21:11 3018
Quincy 11:13:19 -41.3 Dark Down 61.5 237.8 Up 11:05:26 - 11:21:11 2996
Portola 11:13:18 -41.0 Dark Down 61.3 238.6 Up 11:05:25 - 11:21:10 2984
Reno 11:13:15 -40.5 Dark Down 61.0 239.9 Up 11:05:23 - 11:21:08 2958
Carson City 11:13:14 -40.6 Dark Down 61.2 240.5 Up 11:05:22 - 11:21:07 2919
Yerington 11:13:12 -40.1 Dark Down 60.8 241.6 Up 11:05:19 - 11:21:04 2901
Gardnerville 11:13:14 -40.6 Dark Down 61.2 240.9 Up 11:05:22 - 11:21:07 2893
Hawthorne 11:13:09 -39.8 Dark Down 60.7 243.0 Up 11:05:17 - 11:21:02 2853
Tonopah 11:13:04 -38.8 Dark Down 59.9 245.5 Up 11:05:12 - 11:20:57 2809
Lee Vining 11:13:11 -40.3 Dark Down 61.3 243.3 Up 11:05:19 - 11:21:04 2791
Bishop 11:13:08 -39.8 Dark Down 61.0 245.2 Up 11:05:15 - 11:21:00 2729
Beatty 11:13:02 -38.5 Dark Down 60.0 247.8 Up 11:05:09 - 11:20:54 2686
Indian Springs 11:12:58 -37.7 Dark Down 59.4 249.5 Up 11:05:05 - 11:20:50 2657
Lone Pine 11:13:06 -39.6 Dark Down 61.1 246.8 Up 11:05:14 - 11:20:59 2648
Henderson 11:12:55 -37.2 Dark Down 59.0 251.1 Up 11:05:03 - 11:20:48 2603
Patrick 11:12:51 -36.3 Dark Down 58.4 253.1 Up 11:04:58 - 11:20:43 2542
Searchlight/Boulder City 11:12:54 -37.2 Dark Down 59.2 252.0 Up 11:05:02 - 11:20:47 2542
Kingman/Dolan Springs 11:12:51 -36.5 Dark Down 58.6 253.3 Up 11:04:58 - 11:20:43 2517
DCO 11:12:48 -35.8 Dark Down 57.9 254.3 Up 11:04:55 - 11:20:40 2514
Laughlin/Bullhead City 11:12:53 -36.9 Dark Down 59.0 252.8 Up 11:05:01 - 11:20:46 2512
CPSLO 11:13:15 -41.8 Dark Down 63.5 246.0 Up 11:05:23 - 11:21:08 2500
Mohave Valley 11:12:53 -36.9 Dark Down 59.1 253.3 Up 11:05:00 - 11:20:45 2482
Lake Havasu City 11:12:51 -36.7 Dark Down 59.0 254.2 Up 11:04:58 - 11:20:43 2440
Parker 11:12:51 -36.7 Dark Down 59.1 254.7 Up 11:04:58 - 11:20:43 2402
Wildwood 11:13:07 -40.2 Dark Down 62.4 250.6 Up 11:05:14 - 11:20:59 2375
Idyllwild 11:12:59 -38.7 Dark Down 61.1 253.1 Up 11:05:07 - 11:20:52 2344
Blythe 11:12:51 -37.0 Dark Down 59.4 255.3 Up 11:04:59 - 11:20:44 2343
Calipatria 11:12:55 -37.8 Dark Down 60.3 255.3 Up 11:05:02 - 11:20:47 2284
Yuma 11:12:52 -37.0 Dark Down 59.7 256.8 Up 11:04:59 - 11:20:44 2242

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 04TV357, (2020/11/15 11:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  8.91 167
Alnath         05:26:17.5 +28:36:23  1.6  8.23 154
102Iot Tau     05:03:05.8 +21:35:23  4.6  0.83 160
PPM 094029     05:04:22.1 +21:38:36  8.3  0.53 160
PPM 094091     05:08:13.9 +21:48:48  8.9  0.39 159
PPM 094082     05:07:49.1 +21:48:06 11.0  0.30 159
04TV357        05:06:38.4 +21:40:39 15.5       160
Positions are for J2000

Event circumstances last updated at 2019/01/18 20:00:25 UT

Marc W. Buie, Southwest Research Institute

RECON