RECON: TNO occultation with 04TT357

Event between 04TT357 and star UC4-544-013196 with event index number of 301784

Geocentric closest approach at 2020/09/30 11:34:43 UTC

J2000 position of star is 05:14:33.7 +18:46:02
Equinox of date position of star is 05:15:39.9 +18:47:16
Stellar brightness R=16.5, use SENSEUP=128
Star is 87 degrees from the moon. Moon is 98% illuminated.
TNO apparent brightness V=23.0

[RECON map]
TNO is 33.2 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 4.8 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 1605 seconds.
The 1-sigma cross-track error in the shadow position is 3478 km.
The sky-plane scale is 23817.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.6
Diameter=184.5 km assuming a 5% albedo -- 38.2 sec chord
Diameter=75.3 km assuming a 30% albedo -- 15.6 sec chord
Dynamical classification is 5:2EEE
 
 
 
 
 
 

Star training set for 04TT357, (2020/09/30 11:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:06.8 +16:32:58  0.8  9.48  77
Alnath         05:27:36.3 +28:37:23  1.6 10.20  91
PPM 120839     05:21:31.8 +19:35:52  6.5  1.58  88
PPM 120767     05:16:57.3 +19:45:06  8.3  1.00  87
PPM 120768     05:17:02.2 +18:39:36  9.0  0.32  87
04TT357        05:15:46.7 +18:47:23 16.5        87
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 0.6 sigma about the mid-time.
The median site spacing is 14.3 km RECON observability=1.0 and success probability=11.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 11:30:11 -24.0 Dark Up 56.3 151.6 Up 11:15:11 - 11:45:11 372
Kelowna 11:30:09 -23.8 Dark Up 56.4 152.2 Up 11:15:09 - 11:45:09 357
Penticton 11:30:16 -24.0 Dark Up 56.7 151.7 Up 11:15:16 - 11:45:16 344
Okanagan Falls 11:30:20 -24.1 Dark Up 56.8 151.6 Up 11:15:20 - 11:45:20 334
Oliver 11:30:21 -24.2 Dark Up 57.0 151.5 Up 11:15:21 - 11:45:21 323
Anarchist Mountain Observatory 11:30:21 -24.1 Dark Up 57.2 151.7 Up 11:15:21 - 11:45:21 304
Oroville 11:30:24 -24.2 Dark Up 57.3 151.5 Up 11:15:24 - 11:45:24 303
Tonasket 11:30:27 -24.3 Dark Up 57.5 151.4 Up 11:15:27 - 11:45:27 289
Okanogan 11:30:34 -24.5 Dark Up 57.7 150.9 Up 11:15:34 - 11:45:34 276
Manson/Chelan 11:30:47 -25.0 Dark Up 58.0 149.7 Up 11:15:47 - 11:45:47 276
Brewster 11:30:40 -24.7 Dark Up 57.9 150.4 Up 11:15:40 - 11:45:40 270
Entiat 11:30:51 -25.2 Dark Up 58.1 149.4 Up 11:15:51 - 11:45:51 266
Wenatchee 11:30:57 -25.3 Dark Up 58.3 149.1 Up 11:15:57 - 11:45:57 256
Ellensburg 11:31:05 -25.6 Dark Up 58.6 148.4 Up 11:16:05 - 11:46:05 242
Yakima 11:31:12 -25.8 Dark Up 59.0 148.1 Up 11:16:12 - 11:46:12 218
Toppenish/White Swan 11:31:13 -25.8 Dark Up 59.2 148.2 Up 11:16:13 - 11:46:13 196
The Dalles 11:31:34 -26.5 Dark Up 59.6 146.3 Up 11:16:34 - 11:46:34 190
Goldendale 11:31:27 -26.2 Dark Up 59.5 147.1 Up 11:16:27 - 11:46:27 184
Maupin 11:31:40 -26.6 Dark Up 60.0 146.1 Up 11:16:40 - 11:46:40 158
Sisters 11:31:58 -27.3 Dark Up 60.6 144.5 Up 11:16:58 - 11:46:58 130
Madras/Culver 11:31:49 -26.8 Dark Up 60.5 145.6 Up 11:16:49 - 11:46:49 127
Pasco 11:31:01 -25.0 Dark Up 59.8 150.2 Up 11:16:01 - 11:46:01 123
George/Umatilla 11:31:09 -25.3 Dark Up 60.0 149.6 Up 11:16:09 - 11:46:09 113
Redmond 11:31:55 -27.0 Dark Up 60.7 145.2 Up 11:16:55 - 11:46:55 107
Bend 11:32:01 -27.2 Dark Up 60.9 144.7 Up 11:17:01 - 11:47:01 101
Oregon Observatory 11:32:04 -27.3 Dark Up 61.0 144.3 Up 11:17:04 - 11:47:04 97
PNWRO 11:31:03 -25.0 Dark Up 60.0 150.4 Up 11:16:03 - 11:46:03 96
La Pine/Gilchrist 11:32:08 -27.4 Dark Up 61.1 144.0 Up 11:17:08 - 11:47:08 87
Chiloquin 11:32:30 -28.1 Dark Up 61.9 142.4 Up 11:17:30 - 11:47:30 36
North Lake 11:32:08 -27.2 Dark Up 61.7 144.7 Up 11:17:08 - 11:47:08 27
Klamath Falls 11:32:34 -28.1 Dark Up 62.2 142.1 Up 11:17:34 - 11:47:34 10
Tulelake 11:32:35 -28.0 Dark Up 62.5 142.4 Up 11:17:35 - 11:47:35 -25
Paisley 11:32:13 -27.2 Dark Up 62.3 144.7 Up 11:17:13 - 11:47:13 -28
Lakeview 11:32:19 -27.2 Dark Up 62.8 144.6 Up 11:17:19 - 11:47:19 -72
Fall River/Burney 11:32:48 -28.3 Dark Up 63.3 141.5 Up 11:17:48 - 11:47:48 -89
Cedarville 11:32:27 -27.3 Dark Up 63.5 144.2 Up 11:17:27 - 11:47:27 -125
Susanville 11:32:51 -28.0 Dark Up 64.2 142.1 Up 11:17:51 - 11:47:51 -173
Greenville 11:32:57 -28.3 Dark Up 64.3 141.3 Up 11:17:57 - 11:47:57 -174
Gimple 11:32:57 -28.3 Dark Up 64.3 141.4 Up 11:17:57 - 11:47:57 -179
Quincy 11:33:01 -28.4 Dark Up 64.4 141.0 Up 11:18:01 - 11:48:01 -188
Portola 11:32:58 -28.1 Dark Up 64.8 141.8 Up 11:17:58 - 11:47:58 -224
Reno 11:32:54 -27.7 Dark Up 65.3 142.6 Up 11:17:54 - 11:47:54 -280
Carson City 11:32:59 -27.8 Dark Up 65.6 142.3 Up 11:17:59 - 11:47:59 -306
Gardnerville 11:33:03 -27.9 Dark Up 65.8 142.0 Up 11:18:03 - 11:48:03 -325
Yerington 11:32:55 -27.4 Dark Up 66.0 143.2 Up 11:17:55 - 11:47:55 -356
Hawthorne 11:32:56 -27.2 Dark Up 66.6 143.7 Up 11:17:56 - 11:47:56 -419
Lee Vining 11:33:11 -27.7 Dark Up 66.9 142.0 Up 11:18:11 - 11:48:11 -430
Bishop 11:33:10 -27.4 Dark Up 67.7 142.7 Up 11:18:10 - 11:48:10 -515
CPSLO 11:34:08 -29.6 Dark Up 68.2 135.1 Up 11:19:08 - 11:49:08 -527
Tonopah 11:32:45 -26.3 Dark Up 67.6 146.0 Up 11:17:45 - 11:47:45 -534
Lone Pine 11:33:18 -27.3 Dark Up 68.5 142.3 Up 11:18:18 - 11:48:18 -590
Beatty 11:32:56 -26.3 Dark Up 68.8 145.5 Up 11:17:56 - 11:47:56 -645
Indian Springs 11:32:49 -25.6 Dark Up 69.6 147.5 Up 11:17:49 - 11:47:49 -733
Wildwood 11:34:04 -28.4 Dark Up 70.2 137.2 Up 11:19:04 - 11:49:04 -741
Henderson 11:32:47 -25.2 Dark Up 70.3 148.4 Up 11:17:47 - 11:47:47 -814
Searchlight/Boulder City 11:32:56 -25.3 Dark Up 70.8 147.8 Up 11:17:56 - 11:47:56 -861
Idyllwild 11:33:43 -27.0 Dark Up 71.5 140.8 Up 11:18:43 - 11:48:43 -883
Laughlin/Bullhead City 11:32:54 -25.1 Dark Up 71.2 148.2 Up 11:17:54 - 11:47:54 -904
Mohave Valley 11:32:59 -25.1 Dark Up 71.5 147.9 Up 11:17:59 - 11:47:59 -925
Patrick 11:32:42 -24.5 Dark Up 71.3 150.3 Up 11:17:42 - 11:47:42 -928
Kingman/Dolan Springs 11:32:48 -24.7 Dark Up 71.4 149.6 Up 11:17:48 - 11:47:48 -933
Lake Havasu City 11:32:58 -25.1 Dark Up 71.9 147.9 Up 11:17:58 - 11:47:58 -971
DCO 11:32:37 -24.0 Dark Up 71.8 151.8 Up 11:17:37 - 11:47:37 -994
Parker 11:33:05 -25.1 Dark Up 72.2 147.4 Up 11:18:05 - 11:48:05 -999
Calipatria 11:33:38 -26.2 Dark Up 72.6 142.6 Up 11:18:38 - 11:48:38 -1002
Blythe 11:33:19 -25.4 Dark Up 72.6 145.9 Up 11:18:19 - 11:48:19 -1022
Niwot 11:29:44 -17.3 AT Up 68.6 175.6 Up 11:14:44 - 11:44:44 -1057
Yuma 11:33:32 -25.6 Dark Up 73.3 144.2 Up 11:18:32 - 11:48:32 -1091

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 04TT357, (2020/09/30 11:35UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  9.48  77
Alnath         05:26:17.5 +28:36:23  1.6 10.20  91
PPM 120839     05:20:18.3 +19:34:41  6.5  1.58  88
PPM 120767     05:15:43.8 +19:43:48  8.3  1.00  87
PPM 120768     05:15:49.2 +18:38:18  9.0  0.32  87
04TT357        05:14:33.7 +18:46:02 16.5        87
Positions are for J2000

Event circumstances last updated at 2018/10/27 20:30:47 UT

Marc W. Buie, Southwest Research Institute

RECON