RECON: TNO occultation with 14WB509

Event between 14WB509 and star GA1120:00303760 with event index number of 219405

Geocentric closest approach at 2019/10/31 06:45:48 UTC

J2000 position of star is 02:39:18.3 +23:34:18
Equinox of date position of star is 02:40:23.2 +23:39:07
Stellar brightness G=15.4, use SENSEUP=128
Star is 145 degrees from the moon. Moon is 13% illuminated.
TNO apparent brightness V=22.0

[RECON map]
TNO is 35.7 AU from the Sun and 34.7 AU from the Earth.
The TNO is moving 24.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 2438 km.
The sky-plane scale is 25197.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.5
Diameter=302.0 km assuming a 5% albedo -- 12.3 sec chord
Diameter=123.3 km assuming a 30% albedo -- 5.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 14WB509, (2019/10/31 06:46UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:03.6 +16:32:51  0.8 28.23 170
Hamal          02:08:17.7 +23:33:19  2.0  7.36 137
32Nu Ari       02:39:56.8 +22:02:46  5.4  1.61 144
PPM 091844     02:38:57.5 +23:12:48  8.5  0.56 144
PPM 091865     02:40:10.1 +23:38:50  9.5  0.06 145
14WB509        02:40:26.8 +23:39:23 15.4       145
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 20.4 km RECON observability=1.0 and success probability=9.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Summerland 06:46:06 -52.4 Dark Down 59.9 144.0 Up 06:32:11 - 07:00:02 5240
Kelowna 06:46:06 -52.4 Dark Down 60.0 144.6 Up 06:32:11 - 07:00:02 5233
Penticton 06:46:06 -52.7 Dark Down 60.2 144.0 Up 06:32:11 - 07:00:02 5207
Okanagan Falls 06:46:06 -52.9 Dark Down 60.4 143.8 Up 06:32:11 - 07:00:02 5191
Oliver 06:46:06 -53.0 Dark Down 60.5 143.6 Up 06:32:11 - 07:00:02 5176
Anarchist Mountain Observatory 06:46:06 -53.2 Dark Down 60.7 143.8 Up 06:32:11 - 07:00:02 5155
Oroville 06:46:06 -53.3 Dark Down 60.8 143.6 Up 06:32:11 - 07:00:02 5151
Tonasket 06:46:06 -53.5 Dark Down 61.0 143.3 Up 06:32:11 - 07:00:02 5131
Okanogan 06:46:06 -53.8 Dark Down 61.2 142.7 Up 06:32:11 - 07:00:02 5106
Brewster 06:46:06 -54.0 Dark Down 61.3 142.0 Up 06:32:11 - 07:00:02 5088
Manson/Chelan 06:46:06 -54.1 Dark Down 61.3 141.2 Up 06:32:11 - 07:00:02 5082
Entiat 06:46:06 -54.2 Dark Down 61.5 140.8 Up 06:32:11 - 07:00:02 5065
Wenatchee 06:46:06 -54.4 Dark Down 61.6 140.3 Up 06:32:11 - 07:00:02 5046
Ellensburg 06:46:19 -54.8 Dark Down 61.8 139.6 Up 06:32:23 - 07:00:14 5008
Yakima 06:46:20 -55.1 Dark Down 62.2 139.0 Up 06:32:24 - 07:00:15 4972
Toppenish/White Swan 06:46:20 -55.4 Dark Down 62.4 139.1 Up 06:32:24 - 07:00:15 4948
Goldendale 06:46:22 -55.7 Dark Down 62.6 137.6 Up 06:32:27 - 07:00:18 4910
Pasco 06:46:06 -55.8 Dark Down 63.0 141.0 Up 06:32:11 - 07:00:02 4907
The Dalles 06:46:23 -55.8 Dark Down 62.6 136.7 Up 06:32:28 - 07:00:19 4901
PNWRO 06:46:06 -56.1 Dark Down 63.3 141.1 Up 06:32:11 - 07:00:02 4877
George/Umatilla 06:46:18 -56.1 Dark Down 63.2 140.3 Up 06:32:22 - 07:00:13 4876
Maupin 06:46:24 -56.2 Dark Down 63.0 136.4 Up 06:32:28 - 07:00:19 4860
Madras/Culver 06:46:25 -56.7 Dark Down 63.3 135.5 Up 06:32:30 - 07:00:21 4811
Sisters 06:46:27 -56.8 Dark Down 63.3 134.3 Up 06:32:32 - 07:00:23 4795
Redmond 06:46:26 -57.0 Dark Down 63.6 135.0 Up 06:32:31 - 07:00:22 4780
Bend 06:46:27 -57.1 Dark Down 63.6 134.4 Up 06:32:31 - 07:00:22 4765
Oregon Observatory 06:46:28 -57.3 Dark Down 63.7 133.9 Up 06:32:32 - 07:00:23 4753
La Pine/Gilchrist 06:46:29 -57.4 Dark Down 63.8 133.5 Up 06:32:33 - 07:00:24 4736
North Lake 06:46:28 -58.0 Dark Down 64.4 133.9 Up 06:32:32 - 07:00:23 4677
Chiloquin 06:46:32 -58.2 Dark Down 64.4 131.3 Up 06:32:36 - 07:00:27 4645
Paisley 06:46:28 -58.6 Dark Down 65.0 133.7 Up 06:32:32 - 07:00:23 4615
Klamath Falls 06:46:32 -58.6 Dark Down 64.7 130.9 Up 06:32:37 - 07:00:28 4610
Tulelake 06:46:32 -58.9 Dark Down 65.0 130.9 Up 06:32:36 - 07:00:27 4576
Lakeview 06:46:28 -59.1 Dark Down 65.5 133.3 Up 06:32:33 - 07:00:24 4562
Cedarville 06:46:29 -59.8 Dark Down 66.0 132.5 Up 06:32:34 - 07:00:25 4495
Fall River/Burney 06:46:34 -59.7 Dark Down 65.6 129.6 Up 06:32:38 - 07:00:29 4488
Susanville 06:46:33 -60.6 Dark Down 66.5 129.8 Up 06:32:37 - 07:00:28 4405
Greenville 06:46:34 -60.7 Dark Down 66.5 128.8 Up 06:32:39 - 07:00:30 4388
Gimple 06:46:34 -60.7 Dark Down 66.5 128.9 Up 06:32:38 - 07:00:29 4385
Quincy 06:46:35 -60.9 Dark Down 66.6 128.4 Up 06:32:39 - 07:00:30 4369
Portola 06:46:34 -61.2 Dark Down 67.0 129.0 Up 06:32:38 - 07:00:29 4342
Reno 06:46:32 -61.6 Dark Down 67.5 129.7 Up 06:32:37 - 07:00:28 4295
Carson City 06:46:33 -62.0 Dark Down 67.8 129.1 Up 06:32:37 - 07:00:28 4260
Gardnerville 06:46:33 -62.2 Dark Down 67.9 128.7 Up 06:32:38 - 07:00:29 4235
Yerington 06:46:31 -62.4 Dark Down 68.3 129.9 Up 06:32:36 - 07:00:27 4221
Hawthorne 06:46:30 -63.0 Dark Down 68.9 130.0 Up 06:32:35 - 07:00:26 4159
Lee Vining 06:46:33 -63.3 Dark Down 68.9 127.9 Up 06:32:38 - 07:00:29 4121
Tonopah 06:46:27 -63.9 Dark Down 70.0 131.8 Up 06:32:31 - 07:00:22 4069
Bishop 06:46:32 -64.1 Dark Down 69.8 128.0 Up 06:32:36 - 07:00:27 4039
Lone Pine 06:46:32 -64.9 Dark Down 70.4 127.0 Up 06:32:37 - 07:00:28 3953
Beatty 06:46:27 -65.1 Dark Down 71.0 130.3 Up 06:32:32 - 07:00:23 3941
Niwot 06:45:44 -63.9 Dark Down 73.1 166.5 Up 06:31:49 - 06:59:40 3932
CPSLO 06:46:43 -64.9 Dark Down 69.4 119.5 Up 06:32:48 - 07:00:39 3913
Indian Springs 06:46:25 -65.8 Dark Down 71.9 131.9 Up 06:32:29 - 07:00:20 3874
Henderson 06:46:23 -66.5 Dark Down 72.7 132.2 Up 06:32:28 - 07:00:19 3799
Searchlight/Boulder City 06:46:24 -67.0 Dark Down 73.1 131.0 Up 06:32:28 - 07:00:19 3740
Wildwood 06:46:39 -66.8 Dark Down 71.5 120.0 Up 06:32:43 - 07:00:34 3724
Patrick 06:46:21 -67.4 Dark Down 73.8 133.4 Up 06:32:25 - 07:00:16 3702
Laughlin/Bullhead City 06:46:23 -67.4 Dark Down 73.5 131.0 Up 06:32:28 - 07:00:19 3699
Kingman/Dolan Springs 06:46:22 -67.5 Dark Down 73.8 132.3 Up 06:32:26 - 07:00:17 3685
Mohave Valley 06:46:24 -67.7 Dark Down 73.7 130.4 Up 06:32:28 - 07:00:19 3672
DCO 06:46:19 -67.9 Dark Down 74.4 134.4 Up 06:32:23 - 07:00:14 3649
Idyllwild 06:46:33 -67.9 Dark Down 73.0 122.6 Up 06:32:38 - 07:00:29 3625
Lake Havasu City 06:46:24 -68.1 Dark Down 74.1 129.9 Up 06:32:28 - 07:00:19 3624
Parker 06:46:24 -68.4 Dark Down 74.3 129.0 Up 06:32:29 - 07:00:20 3587
Blythe 06:46:26 -68.8 Dark Down 74.5 126.8 Up 06:32:31 - 07:00:22 3544
Calipatria 06:46:30 -68.9 Dark Down 74.1 123.3 Up 06:32:35 - 07:00:26 3525
Yuma 06:46:28 -69.6 Dark Down 75.0 124.0 Up 06:32:32 - 07:00:23 3452

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 14WB509, (2019/10/31 06:46UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:30  0.8 28.23 170
Hamal          02:07:10.7 +23:27:42  2.0  7.36 137
32Nu Ari       02:38:49.0 +21:57:41  5.4  1.61 144
PPM 091844     02:37:49.3 +23:07:42  8.5  0.56 144
PPM 091865     02:39:01.7 +23:33:45  9.5  0.06 145
14WB509        02:39:18.3 +23:34:18 15.4       145
Positions are for J2000

Event circumstances last updated at 2018/10/24 22:03:04 UT

Marc W. Buie, Southwest Research Institute

RECON