RECON: TNO occultation with 55636

Event between (55636) 02TX300 and star GA1240:00260076 with event index number of 244880

Geocentric closest approach at 2020/02/05 06:14:54 UTC

J2000 position of star is 01:24:26.0 +35:16:31
Equinox of date position of star is 01:25:34.5 +35:22:45
Stellar brightness G=13.3, use SENSEUP=32
Star is 55 degrees from the moon. Moon is 80% illuminated.
TNO apparent brightness V=20.0

[RECON map]
TNO is 42.7 AU from the Sun and 42.9 AU from the Earth.
The TNO is moving 15.7 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 119 seconds.
The 1-sigma cross-track error in the shadow position is 1742 km.
The sky-plane scale is 31135.0 km/arcsec.

The TNO has an absolute magnitude Hv=3.5
Diameter=1202.3 km assuming a 5% albedo -- 76.5 sec chord
Diameter=490.8 km assuming a 30% albedo -- 31.2 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 55636, (2020/02/05 06:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:04.6 +16:32:53  0.8 46.44  14
57Gam1And      02:05:08.5 +42:25:31  2.3 10.42  47
PPM 066368     01:33:16.7 +34:54:10  6.4  1.64  53
PPM 066283     01:27:17.8 +34:41:00  6.7  0.78  54
PPM 066266     01:26:17.2 +35:50:14  8.6  0.48  54
PPM 066250     01:25:37.6 +35:29:41 10.5  0.12  55
55636          01:25:34.7 +35:22:46 13.3        54
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 5.8 km RECON observability=0.7 and success probability=1.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Niwot 06:17:52 -63.0 Dark Up 13.3 305.2 Really Low 06:07:26 - 06:28:18 5182
SwRI 06:17:53 -63.0 Dark Up 13.3 305.2 Really Low 06:07:27 - 06:28:19 5175
Clarence Fulton 06:17:13 -48.8 Dark Up 27.1 293.6 Low 06:06:47 - 06:27:39 4877
Kelowna 06:17:16 -49.0 Dark Up 27.0 293.6 Low 06:06:50 - 06:27:42 4862
Penticton 06:17:18 -49.3 Dark Up 26.9 293.7 Low 06:06:52 - 06:27:44 4852
Summerland 06:17:18 -49.2 Dark Up 27.0 293.6 Low 06:06:52 - 06:27:44 4849
Anarchist Mountain Observatory 06:17:21 -49.7 Dark Up 26.6 294.1 Low 06:06:55 - 06:27:47 4849
Oliver 06:17:20 -49.5 Dark Up 26.8 293.9 Low 06:06:54 - 06:27:46 4844
Tonasket 06:17:23 -49.9 Dark Up 26.5 294.2 Low 06:06:57 - 06:27:49 4838
Okanogan 06:17:26 -50.1 Dark Up 26.5 294.3 Low 06:07:00 - 06:27:52 4825
Brewster 06:17:27 -50.2 Dark Up 26.5 294.3 Low 06:07:01 - 06:27:53 4810
PNWRO 06:17:39 -52.1 Dark Up 25.0 295.8 Low 06:07:13 - 06:28:05 4795
Pasco 06:17:39 -51.8 Dark Up 25.2 295.5 Low 06:07:13 - 06:28:05 4791
Manson/Chelan 06:17:29 -50.1 Dark Up 26.6 294.2 Low 06:07:03 - 06:27:55 4790
Entiat 06:17:31 -50.2 Dark Up 26.5 294.2 Low 06:07:05 - 06:27:57 4782
Wenatchee 06:17:32 -50.4 Dark Up 26.5 294.3 Low 06:07:06 - 06:27:58 4771
Ellensburg 06:17:35 -50.5 Dark Up 26.5 294.3 Low 06:07:09 - 06:28:01 4752
Toppenish/White Swan 06:17:39 -51.0 Dark Up 26.1 294.7 Low 06:07:13 - 06:28:05 4741
Yakima 06:17:38 -50.8 Dark Up 26.3 294.5 Low 06:07:12 - 06:28:04 4740
Goldendale 06:17:43 -51.2 Dark Up 26.1 294.7 Low 06:07:17 - 06:28:09 4708
George/Scottsdale 06:18:40 -64.4 Dark Up 14.0 303.3 Really Low 06:08:14 - 06:29:06 4691
DCO 06:18:35 -62.6 Dark Up 15.7 302.4 Really Low 06:08:09 - 06:29:01 4688
The Dalles 06:17:44 -51.1 Dark Up 26.3 294.6 Low 06:07:18 - 06:28:10 4686
Maupin 06:17:47 -51.5 Dark Up 26.0 294.9 Low 06:07:21 - 06:28:13 4678
Victoria 06:17:28 -48.1 Dark Up 28.8 291.9 Low 06:07:02 - 06:27:54 4671
Patrick 06:18:35 -62.0 Dark Up 16.4 302.0 Really Low 06:08:09 - 06:29:01 4668
Kingman/Dolan Springs 06:18:36 -62.0 Dark Up 16.4 302.0 Really Low 06:08:10 - 06:29:02 4651
Redmond 06:17:52 -52.0 Dark Up 25.7 295.2 Low 06:07:26 - 06:28:18 4648
Henderson 06:18:33 -60.9 Dark Up 17.5 301.3 Really Low 06:08:07 - 06:28:59 4641
Bend 06:17:53 -52.1 Dark Up 25.7 295.3 Low 06:07:27 - 06:28:19 4635
Sisters 06:17:53 -51.8 Dark Up 25.9 295.0 Low 06:07:27 - 06:28:19 4631
Indian Springs 06:18:31 -60.1 Dark Up 18.2 300.8 Really Low 06:08:05 - 06:28:57 4631
North Lake 06:17:59 -52.8 Dark Up 25.0 295.8 Low 06:07:33 - 06:28:25 4628
Paisley 06:18:01 -53.4 Dark Up 24.5 296.3 Low 06:07:35 - 06:28:27 4626
Laughlin/Bullhead City 06:18:37 -61.7 Dark Up 16.7 301.7 Really Low 06:08:11 - 06:29:03 4625
Oregon Observatory 06:17:55 -52.1 Dark Up 25.7 295.3 Low 06:07:29 - 06:28:21 4624
Searchlight/Boulder City 06:18:36 -61.3 Dark Up 17.1 301.5 Really Low 06:08:10 - 06:29:02 4622
Lakeview 06:18:04 -53.8 Dark Up 24.2 296.6 Low 06:07:38 - 06:28:30 4618
Tonopah 06:18:26 -58.2 Dark Up 20.1 299.7 Low 06:08:00 - 06:28:52 4617
La Pine/Gilchrist 06:17:56 -52.2 Dark Up 25.6 295.3 Low 06:07:30 - 06:28:22 4615
Mohave Valley 06:18:39 -61.9 Dark Up 16.6 301.8 Really Low 06:08:13 - 06:29:05 4615
Lake Havasu City 06:18:40 -62.3 Dark Up 16.2 302.0 Really Low 06:08:14 - 06:29:06 4610
Cedarville 06:18:08 -54.3 Dark Up 23.8 296.9 Low 06:07:42 - 06:28:34 4604
Parker 06:18:43 -62.5 Dark Up 16.0 302.1 Really Low 06:08:17 - 06:29:09 4597
Beatty 06:18:31 -59.2 Dark Up 19.2 300.2 Really Low 06:08:05 - 06:28:57 4593
Hawthorne 06:18:24 -57.1 Dark Up 21.3 298.8 Low 06:07:58 - 06:28:50 4568
Blythe 06:18:46 -62.6 Dark Up 15.9 302.1 Really Low 06:08:20 - 06:29:12 4561
Yerington 06:18:22 -56.4 Dark Up 21.9 298.4 Low 06:07:56 - 06:28:48 4561
Klamath Falls 06:18:06 -52.9 Dark Up 25.1 295.8 Low 06:07:40 - 06:28:32 4554
Reno 06:18:19 -55.7 Dark Up 22.6 297.9 Low 06:07:53 - 06:28:45 4551
Susanville 06:18:15 -54.7 Dark Up 23.6 297.1 Low 06:07:49 - 06:28:41 4543
Carson City 06:18:22 -55.9 Dark Up 22.4 298.0 Low 06:07:56 - 06:28:48 4538
Bishop 06:18:31 -57.9 Dark Up 20.5 299.3 Low 06:08:05 - 06:28:57 4535
Gardnerville 06:18:24 -56.1 Dark Up 22.2 298.2 Low 06:07:58 - 06:28:50 4532
Fall River/Burney 06:18:12 -53.8 Dark Up 24.3 296.5 Low 06:07:46 - 06:28:38 4531
Portola 06:18:19 -55.1 Dark Up 23.1 297.5 Low 06:07:53 - 06:28:45 4530
Lee Vining 06:18:29 -57.1 Dark Up 21.3 298.8 Low 06:08:03 - 06:28:55 4524
Gimple 06:18:17 -54.7 Dark Up 23.6 297.2 Low 06:07:51 - 06:28:43 4523
Yuma 06:18:51 -63.1 Dark Up 15.4 302.3 Really Low 06:08:25 - 06:29:17 4519
Greenville 06:18:18 -54.6 Dark Up 23.6 297.1 Low 06:07:52 - 06:28:44 4519
Quincy 06:18:19 -54.8 Dark Up 23.5 297.2 Low 06:07:53 - 06:28:45 4512
Calipatria 06:18:50 -62.2 Dark Up 16.3 301.9 Really Low 06:08:24 - 06:29:16 4495
Idyllwild 06:18:48 -61.1 Dark Up 17.4 301.2 Really Low 06:08:22 - 06:29:14 4466
Wildwood 06:18:49 -59.5 Dark Up 19.0 300.3 Really Low 06:08:23 - 06:29:15 4389
CPSLO 06:18:45 -57.4 Dark Up 21.1 299.1 Low 06:08:19 - 06:29:11 4339

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 55636, (2020/02/05 06:15UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 46.44  14
57Gam1And      02:03:54.0 +42:19:46  2.3 10.42  47
PPM 066368     01:32:07.6 +34:48:00  6.4  1.64  53
PPM 066283     01:26:09.2 +34:34:45  6.7  0.78  54
PPM 066266     01:25:08.3 +35:43:59  8.6  0.48  54
PPM 066250     01:24:28.9 +35:23:26 10.5  0.12  55
55636          01:24:26.0 +35:16:31 13.3        55
Positions are for J2000

Event circumstances last updated at 2020/01/07 22:59:11 UT

Marc W. Buie, Southwest Research Institute

RECON