RECON: TNO occultation with 119979

Event between (119979) 02WC19 and star UC4-549-018299 with event index number of 99484

Geocentric closest approach at 2018/01/16 06:04:21 UTC

J2000 position of star is 05:43:11.8 +19:41:22
Equinox of date position of star is 05:44:12.0 +19:41:47
Stellar brightness R=16.5
Star is 159 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 40.6 AU from the Sun and 39.7 AU from the Earth.
The TNO is moving 21.6 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 716 seconds.
The 1-sigma cross-track error in the shadow position is 3352 km.
The sky-plane scale is 28791.8 km/arcsec.

The TNO has an absolute magnitude Hv=4.9
Diameter=631.0 km assuming a 5% albedo -- 29.2 sec chord
Diameter=257.6 km assuming a 30% albedo -- 11.9 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 119979, (2018/01/16 06:04UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:08.9 +07:24:32  0.4 12.62 158
Alnath         05:27:26.0 +28:37:16  1.6  9.71 154
123Zet Tau     05:38:43.4 +21:09:07  3.0  1.95 158
PPM 121323     05:44:37.2 +19:32:51  8.5  0.17 159
119979         05:44:15.9 +19:41:48 16.5       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 1.3 sigma about the mid-time.
The median site spacing is 24.1 km RECON observability=1.0 and success probability=4.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Oroville 06:04:23 -52.8 Dark Down 60.7 182.9 Up 05:49:23 - 06:19:23 7869
Tonasket 06:04:23 -53.0 Dark Down 61.0 182.9 Up 05:49:23 - 06:19:23 7847
Okanogan 06:04:23 -53.1 Dark Down 61.3 182.6 Up 05:49:23 - 06:19:23 7813
Brewster 06:04:24 -53.1 Dark Down 61.6 182.3 Up 05:49:24 - 06:19:24 7786
Manson/Chelan 06:04:25 -53.1 Dark Down 61.8 181.6 Up 05:49:25 - 06:19:25 7764
Entiat 06:04:25 -53.2 Dark Down 62.0 181.4 Up 05:49:25 - 06:19:25 7742
Wenatchee 06:04:25 -53.2 Dark Down 62.3 181.2 Up 05:49:25 - 06:19:25 7717
Ellensburg 06:04:26 -53.4 Dark Down 62.7 180.8 Up 05:49:26 - 06:19:26 7675
Yakima 06:04:26 -53.6 Dark Down 63.1 180.8 Up 05:49:26 - 06:19:26 7635
Toppenish/White Swan 06:04:25 -53.8 Dark Down 63.3 181.1 Up 05:49:25 - 06:19:25 7614
Pasco 06:04:21 -54.6 Dark Down 63.4 183.8 Up 05:49:21 - 06:19:21 7608
PNWRO 06:04:20 -54.8 Dark Down 63.6 184.3 Up 05:49:20 - 06:19:20 7584
George/Umatilla 06:04:22 -54.6 Dark Down 63.7 183.4 Up 05:49:22 - 06:19:22 7574
Goldendale 06:04:27 -53.9 Dark Down 63.9 180.3 Up 05:49:27 - 06:19:27 7558
The Dalles 06:04:28 -53.8 Dark Down 64.1 179.5 Up 05:49:28 - 06:19:28 7534
Maupin 06:04:27 -54.0 Dark Down 64.5 179.7 Up 05:49:27 - 06:19:27 7492
Madras/Culver 06:04:27 -54.3 Dark Down 65.1 179.6 Up 05:49:27 - 06:19:27 7437
Sisters 06:04:30 -54.2 Dark Down 65.4 178.6 Up 05:49:30 - 06:19:30 7402
Redmond 06:04:27 -54.5 Dark Down 65.4 179.5 Up 05:49:27 - 06:19:27 7401
Bend 06:04:28 -54.5 Dark Down 65.6 179.2 Up 05:49:28 - 06:19:28 7379
Oregon Observatory 06:04:29 -54.5 Dark Down 65.8 178.9 Up 05:49:29 - 06:19:29 7361
La Pine/Gilchrist 06:04:29 -54.5 Dark Down 66.0 178.7 Up 05:49:29 - 06:19:29 7340
North Lake 06:04:27 -55.1 Dark Down 66.4 180.1 Up 05:49:27 - 06:19:27 7298
Paisley 06:04:26 -55.6 Dark Down 67.0 181.0 Up 05:49:26 - 06:19:26 7244
Chiloquin 06:04:30 -54.8 Dark Down 67.1 177.8 Up 05:49:30 - 06:19:30 7226
Lakeview 06:04:24 -56.0 Dark Down 67.5 181.4 Up 05:49:24 - 06:19:24 7193
Klamath Falls 06:04:30 -55.1 Dark Down 67.5 178.0 Up 05:49:30 - 06:19:30 7191
Tulelake 06:04:29 -55.4 Dark Down 67.7 178.7 Up 05:49:29 - 06:19:29 7164
Cedarville 06:04:23 -56.4 Dark Down 68.2 181.9 Up 05:49:23 - 06:19:23 7126
Niwot 06:03:25 -66.1 Dark Down 65.6 217.6 Up 05:48:25 - 06:18:25 7102
Fall River/Burney 06:04:28 -55.8 Dark Down 68.6 178.8 Up 05:49:28 - 06:19:28 7071
Susanville 06:04:25 -56.6 Dark Down 69.3 180.8 Up 05:49:25 - 06:19:25 7009
Gimple 06:04:27 -56.6 Dark Down 69.6 180.2 Up 05:49:27 - 06:19:27 6979
Greenville 06:04:26 -56.5 Dark Down 69.5 180.0 Up 05:49:26 - 06:19:26 6979
Quincy 06:04:26 -56.6 Dark Down 69.8 180.0 Up 05:49:26 - 06:19:26 6958
Portola 06:04:24 -57.0 Dark Down 69.9 181.3 Up 05:49:24 - 06:19:24 6947
Reno 06:04:22 -57.6 Dark Down 70.1 183.1 Up 05:49:22 - 06:19:22 6922
Carson City 06:04:21 -57.7 Dark Down 70.5 183.2 Up 05:49:21 - 06:19:21 6885
Yerington 06:04:18 -58.2 Dark Down 70.6 185.0 Up 05:49:18 - 06:19:18 6867
Gardnerville 06:04:21 -57.9 Dark Down 70.7 183.3 Up 05:49:21 - 06:19:21 6859
Hawthorne 06:04:16 -58.8 Dark Down 71.1 186.6 Up 05:49:16 - 06:19:16 6822
Tonopah 06:04:11 -60.0 Dark Down 71.4 190.9 Up 05:49:11 - 06:19:11 6781
Lee Vining 06:04:18 -58.7 Dark Down 71.7 185.4 Up 05:49:18 - 06:19:18 6760
Bishop 06:04:15 -59.5 Dark Down 72.2 187.7 Up 05:49:15 - 06:19:15 6701
Beatty 06:04:09 -60.8 Dark Down 72.4 192.9 Up 05:49:09 - 06:19:09 6662
Indian Springs 06:04:04 -61.7 Dark Down 72.5 196.4 Up 05:49:04 - 06:19:04 6635
Lone Pine 06:04:14 -60.0 Dark Down 72.9 189.1 Up 05:49:14 - 06:19:14 6622
Henderson 06:04:01 -62.5 Dark Down 72.9 199.0 Up 05:49:01 - 06:19:01 6583
Patrick 06:03:56 -63.5 Dark Down 73.1 203.1 Up 05:48:56 - 06:18:56 6525
Searchlight/Boulder City 06:04:00 -62.8 Dark Down 73.4 199.8 Up 05:49:00 - 06:19:00 6523
Kingman/Dolan Springs 06:03:57 -63.5 Dark Down 73.4 202.8 Up 05:48:57 - 06:18:57 6500
DCO 06:03:53 -64.2 Dark Down 73.2 205.7 Up 05:48:53 - 06:18:53 6499
Laughlin/Bullhead City 06:03:59 -63.1 Dark Down 73.6 201.3 Up 05:48:59 - 06:18:59 6493
CPSLO 06:04:23 -58.5 Dark Down 74.4 180.9 Up 05:49:23 - 06:19:23 6470
Mohave Valley 06:03:58 -63.3 Dark Down 73.8 201.6 Up 05:48:58 - 06:18:58 6464
Lake Havasu City 06:03:57 -63.6 Dark Down 74.1 202.9 Up 05:48:57 - 06:18:57 6424
Parker 06:03:58 -63.8 Dark Down 74.4 203.5 Up 05:48:58 - 06:18:58 6386
Wildwood 06:04:15 -60.5 Dark Down 75.5 188.6 Up 05:49:15 - 06:19:15 6352
Blythe 06:03:58 -63.7 Dark Down 75.0 203.3 Up 05:48:58 - 06:18:58 6328
Idyllwild 06:04:07 -62.1 Dark Down 75.5 195.8 Up 05:49:07 - 06:19:07 6325
Calipatria 06:04:01 -63.2 Dark Down 75.8 200.8 Up 05:49:01 - 06:19:01 6268
Yuma 06:03:58 -64.1 Dark Down 75.9 204.6 Up 05:48:58 - 06:18:58 6228

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 119979, (2018/01/16 06:04UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.62 158
Alnath         05:26:17.5 +28:36:24  1.6  9.71 154
123Zet Tau     05:37:38.7 +21:08:33  3.0  1.95 158
PPM 121323     05:43:33.2 +19:32:26  8.5  0.17 159
119979         05:43:11.8 +19:41:22 16.5       159
Positions are for J2000

Event circumstances last updated at 2016/12/09 18:55:52 UT

Marc W. Buie, Southwest Research Institute

RECON