RECON: TNO occultation with 04TV357

Event between 04TV357 and star GA1100:00780358 with event index number of 238011

Geocentric closest approach at 2019/12/26 03:14:46 UTC

J2000 position of star is 04:53:56.2 +21:40:46
Equinox of date position of star is 04:55:05.8 +21:42:36
Stellar brightness G=15.3, use SENSEUP=128
Star is 162 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 34.8 AU from the Sun and 33.9 AU from the Earth.
The TNO is moving 23.0 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 102 seconds.
The 1-sigma cross-track error in the shadow position is 1369 km.
The sky-plane scale is 24556.1 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=267.9 km assuming a 5% albedo -- 11.6 sec chord
Diameter=109.4 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 04TV357, (2019/12/26 03:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.2 +16:32:52  0.8  6.70 156
Alnath         05:27:33.4 +28:37:21  1.6 10.07 168
102Iot Tau     05:04:17.5 +21:37:00  4.6  2.13 164
PPM 093881     04:56:01.2 +22:10:38  8.5  0.51 162
PPM 093872     04:55:37.7 +21:46:52  9.4  0.14 162
04TV357        04:55:07.8 +21:42:39 15.3       162
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 16.5 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 03:16:42 -30.2 Dark Down 42.3 107.7 Up 03:07:42 - 03:25:41 9872
Summerland 03:16:42 -30.0 Dark Down 42.2 107.2 Up 03:07:43 - 03:25:42 9857
Penticton 03:16:43 -30.1 Dark Down 42.3 107.2 Up 03:07:44 - 03:25:43 9849
Okanagan Falls 03:16:43 -30.1 Dark Down 42.3 107.0 Up 03:07:43 - 03:25:42 9835
Oliver 03:16:44 -30.1 Dark Down 42.4 106.9 Up 03:07:44 - 03:25:43 9821
Anarchist Mountain Observatory 03:16:45 -30.2 Dark Down 42.5 107.0 Up 03:07:45 - 03:25:44 9803
Oroville 03:16:45 -30.2 Dark Down 42.5 106.8 Up 03:07:46 - 03:25:45 9799
Tonasket 03:16:45 -30.2 Dark Down 42.6 106.6 Up 03:07:46 - 03:25:45 9781
Okanogan 03:16:47 -30.0 Dark Down 42.6 106.2 Up 03:07:47 - 03:25:46 9758
Brewster 03:16:48 -29.9 Dark Down 42.5 105.8 Up 03:07:48 - 03:25:47 9742
Manson/Chelan 03:16:49 -29.7 Dark Down 42.4 105.3 Up 03:07:50 - 03:25:49 9736
Entiat 03:16:50 -29.6 Dark Down 42.4 105.0 Up 03:07:50 - 03:25:49 9721
Wenatchee 03:16:51 -29.5 Dark Down 42.4 104.7 Up 03:07:52 - 03:25:51 9703
Ellensburg 03:16:53 -29.3 Dark Down 42.3 104.1 Up 03:07:54 - 03:25:53 9677
Yakima 03:16:55 -29.3 Dark Down 42.4 103.8 Up 03:07:55 - 03:25:54 9645
Toppenish/White Swan 03:16:55 -29.4 Dark Down 42.6 103.7 Up 03:07:55 - 03:25:54 9623
Goldendale 03:16:57 -29.1 Dark Down 42.4 102.9 Up 03:07:58 - 03:25:57 9590
The Dalles 03:16:59 -28.8 Dark Down 42.3 102.4 Up 03:07:59 - 03:25:58 9583
Pasco 03:16:52 -30.3 Dark Down 43.5 104.7 Up 03:07:52 - 03:25:51 9576
George/Umatilla 03:16:53 -30.1 Dark Down 43.4 104.2 Up 03:07:54 - 03:25:53 9555
PNWRO 03:16:53 -30.4 Dark Down 43.7 104.7 Up 03:07:53 - 03:25:52 9550
Maupin 03:17:00 -28.9 Dark Down 42.4 102.1 Up 03:08:00 - 03:25:59 9546
Madras/Culver 03:17:01 -28.8 Dark Down 42.5 101.6 Up 03:08:02 - 03:26:01 9502
Sisters 03:17:03 -28.4 Dark Down 42.3 100.9 Up 03:08:04 - 03:26:03 9488
Redmond 03:17:03 -28.7 Dark Down 42.5 101.2 Up 03:08:03 - 03:26:02 9474
Bend 03:17:04 -28.6 Dark Down 42.5 100.9 Up 03:08:04 - 03:26:03 9461
Oregon Observatory 03:17:04 -28.5 Dark Down 42.4 100.6 Up 03:08:04 - 03:26:03 9450
La Pine/Gilchrist 03:17:06 -28.4 Dark Down 42.4 100.4 Up 03:08:06 - 03:26:05 9435
North Lake 03:17:06 -28.8 Dark Down 42.9 100.5 Up 03:08:06 - 03:26:05 9381
Chiloquin 03:17:10 -28.1 Dark Down 42.4 99.1 Up 03:08:11 - 03:26:10 9353
Paisley 03:17:06 -29.0 Dark Down 43.3 100.3 Up 03:08:06 - 03:26:05 9323
Klamath Falls 03:17:11 -28.1 Dark Down 42.5 98.9 Up 03:08:11 - 03:26:10 9322
Tulelake 03:17:11 -28.3 Dark Down 42.8 98.9 Up 03:08:11 - 03:26:10 9290
Lakeview 03:17:08 -29.1 Dark Down 43.5 100.0 Up 03:08:09 - 03:26:08 9274
Cedarville 03:17:09 -29.2 Dark Down 43.8 99.5 Up 03:08:10 - 03:26:09 9213
Fall River/Burney 03:17:14 -28.2 Dark Down 43.0 98.1 Up 03:08:14 - 03:26:13 9210
Susanville 03:17:14 -28.7 Dark Down 43.6 98.1 Up 03:08:15 - 03:26:14 9132
Greenville 03:17:15 -28.4 Dark Down 43.4 97.6 Up 03:08:16 - 03:26:15 9118
Gimple 03:17:15 -28.5 Dark Down 43.5 97.7 Up 03:08:15 - 03:26:14 9115
Quincy 03:17:15 -28.4 Dark Down 43.5 97.4 Up 03:08:16 - 03:26:15 9100
Portola 03:17:15 -28.8 Dark Down 43.8 97.7 Up 03:08:15 - 03:26:14 9074
Reno 03:17:15 -29.2 Dark Down 44.4 97.9 Up 03:08:15 - 03:26:14 9030
Carson City 03:17:15 -29.2 Dark Down 44.4 97.6 Up 03:08:15 - 03:26:14 8997
Gardnerville 03:17:16 -29.2 Dark Down 44.5 97.4 Up 03:08:17 - 03:26:16 8974
Yerington 03:17:15 -29.7 Dark Down 44.9 97.8 Up 03:08:15 - 03:26:14 8960
Hawthorne 03:17:15 -30.0 Dark Down 45.4 97.8 Up 03:08:15 - 03:26:14 8901
Lee Vining 03:17:18 -29.6 Dark Down 45.1 96.9 Up 03:08:18 - 03:26:17 8867
Tonopah 03:17:13 -31.1 Dark Down 46.6 98.3 Up 03:08:14 - 03:26:13 8814
Bishop 03:17:18 -30.1 Dark Down 45.8 96.8 Up 03:08:18 - 03:26:17 8789
Lone Pine 03:17:19 -30.2 Dark Down 46.1 96.2 Up 03:08:19 - 03:26:18 8709
Beatty 03:17:15 -31.3 Dark Down 47.1 97.4 Up 03:08:16 - 03:26:15 8694
CPSLO 03:17:28 -28.0 Dark Down 44.1 93.2 Up 03:08:29 - 03:26:28 8678
Niwot 03:16:36 -40.4 Dark Down 55.0 111.1 Up 03:07:36 - 03:25:35 8641
SwRI 03:16:36 -40.3 Dark Down 55.0 110.9 Up 03:07:37 - 03:25:36 8634
Indian Springs 03:17:13 -32.1 Dark Down 48.0 97.8 Up 03:08:14 - 03:26:13 8629
Henderson 03:17:13 -32.6 Dark Down 48.6 97.7 Up 03:08:13 - 03:26:12 8557
Searchlight/Boulder City 03:17:14 -32.6 Dark Down 48.7 97.1 Up 03:08:15 - 03:26:14 8502
Wildwood 03:17:27 -29.4 Dark Down 45.9 93.3 Up 03:08:27 - 03:26:26 8496
Laughlin/Bullhead City 03:17:14 -32.8 Dark Down 49.1 97.0 Up 03:08:14 - 03:26:13 8463
Patrick 03:17:11 -33.4 Dark Down 49.6 97.8 Up 03:08:12 - 03:26:11 8463
Kingman/Dolan Springs 03:17:13 -33.2 Dark Down 49.5 97.4 Up 03:08:13 - 03:26:12 8448
Mohave Valley 03:17:14 -32.8 Dark Down 49.1 96.7 Up 03:08:15 - 03:26:14 8437
DCO 03:17:10 -33.9 Dark Down 50.2 98.0 Up 03:08:11 - 03:26:10 8411
Idyllwild 03:17:23 -30.9 Dark Down 47.5 94.1 Up 03:08:24 - 03:26:23 8399
Lake Havasu City 03:17:15 -32.9 Dark Down 49.4 96.4 Up 03:08:15 - 03:26:14 8391
Parker 03:17:15 -32.9 Dark Down 49.4 96.1 Up 03:08:16 - 03:26:15 8357
Blythe 03:17:18 -32.6 Dark Down 49.2 95.3 Up 03:08:19 - 03:26:18 8317
Calipatria 03:17:21 -31.8 Dark Down 48.5 94.1 Up 03:08:22 - 03:26:21 8301
Yuma 03:17:20 -32.4 Dark Down 49.3 94.2 Up 03:08:20 - 03:26:19 8230

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, (2019/12/26 03:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8  6.70 156
Alnath         05:26:17.5 +28:36:23  1.6 10.07 168
102Iot Tau     05:03:05.8 +21:35:23  4.6  2.13 164
PPM 093881     04:54:49.3 +22:08:47  8.5  0.51 162
PPM 093872     04:54:26.0 +21:45:00  9.4  0.14 162
04TV357        04:53:56.2 +21:40:46 15.3       162
Positions are for J2000

Event circumstances last updated at 2019/06/07 23:04:10 UT

Marc W. Buie, Southwest Research Institute

RECON