RECON: TNO occultation with 250112

Event between (250112) 02KY14 and star GA0980:02377981 with event index number of 356271

Geocentric closest approach at 2020/01/14 05:20:28 UTC

J2000 position of star is 06:52:28.7 +09:24:31
Equinox of date position of star is 06:53:34.4 +09:22:59
Stellar brightness G=16.3, use SENSEUP=128
Star is 58 degrees from the moon. Moon is 85% illuminated.
TNO apparent brightness V=21.0

[RECON map]
TNO is 13.5 AU from the Sun and 12.5 AU from the Earth.
The TNO is moving 22.7 km/sec on the sky relative to the star, or, 9.0 arcsec/hr.
The 1-sigma error in the time of the event is 61 seconds.
The 1-sigma cross-track error in the shadow position is 665 km.
The sky-plane scale is 9097.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.7
Diameter=69.2 km assuming a 5% albedo -- 3.1 sec chord
Diameter=28.2 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 250112, (2020/01/14 05:20UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:15.4 +07:24:33  0.4 14.31  73
Alhena         06:38:52.2 +16:22:50  1.9  7.86  61
PPM 151446     06:53:54.9 +08:21:16  6.0  1.03  58
PPM 151366     06:51:44.5 +09:14:03  8.1  0.48  59
PPM 151452     06:54:18.7 +09:46:08  8.6  0.43  58
PPM 151451     06:54:18.2 +09:12:57 10.6  0.24  58
250112         06:53:34.7 +09:22:59 16.3        58
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 22.2 km RECON observability=1.0 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 05:22:07 -46.9 Dark Up 42.7 139.8 Up 05:16:31 - 05:27:43 4672
Kelowna 05:22:08 -47.0 Dark Up 43.0 139.3 Up 05:16:32 - 05:27:44 4640
Summerland 05:22:09 -47.0 Dark Up 43.1 138.9 Up 05:16:33 - 05:27:45 4618
Penticton 05:22:09 -47.1 Dark Up 43.2 139.0 Up 05:16:33 - 05:27:45 4612
Oliver 05:22:09 -47.2 Dark Up 43.5 138.8 Up 05:16:33 - 05:27:45 4582
Anarchist Mountain Observatory 05:22:09 -47.4 Dark Up 43.7 138.9 Up 05:16:33 - 05:27:45 4567
Tonasket 05:22:10 -47.5 Dark Up 43.9 138.7 Up 05:16:34 - 05:27:46 4540
Victoria 05:22:21 -45.2 Dark Up 42.2 133.8 Up 05:16:45 - 05:27:57 4533
Okanogan 05:22:11 -47.6 Dark Up 44.1 138.3 Up 05:16:35 - 05:27:47 4511
Brewster 05:22:12 -47.5 Dark Up 44.2 137.8 Up 05:16:36 - 05:27:48 4488
Manson/Chelan 05:22:13 -47.4 Dark Up 44.2 137.3 Up 05:16:37 - 05:27:49 4470
Entiat 05:22:14 -47.5 Dark Up 44.3 137.0 Up 05:16:38 - 05:27:50 4451
Wenatchee 05:22:14 -47.5 Dark Up 44.4 136.7 Up 05:16:38 - 05:27:50 4429
Ellensburg 05:22:16 -47.5 Dark Up 44.6 136.2 Up 05:16:40 - 05:27:52 4393
Yakima 05:22:16 -47.7 Dark Up 44.9 135.9 Up 05:16:40 - 05:27:52 4356
Toppenish/White Swan 05:22:16 -47.8 Dark Up 45.2 136.0 Up 05:16:40 - 05:27:52 4337
Pasco 05:22:13 -48.7 Dark Up 45.8 137.4 Up 05:16:37 - 05:27:49 4323
PNWRO 05:22:12 -48.9 Dark Up 46.1 137.5 Up 05:16:36 - 05:27:48 4301
Goldendale 05:22:18 -47.8 Dark Up 45.3 135.1 Up 05:16:42 - 05:27:54 4288
The Dalles 05:22:20 -47.6 Dark Up 45.3 134.5 Up 05:16:44 - 05:27:56 4268
Maupin 05:22:20 -47.8 Dark Up 45.7 134.3 Up 05:16:44 - 05:27:56 4230
Sisters 05:22:23 -47.8 Dark Up 46.0 133.0 Up 05:16:47 - 05:27:59 4152
Redmond 05:22:22 -48.1 Dark Up 46.3 133.5 Up 05:16:46 - 05:27:58 4148
Bend 05:22:22 -48.1 Dark Up 46.3 133.2 Up 05:16:46 - 05:27:58 4129
Oregon Observatory 05:22:23 -48.0 Dark Up 46.4 132.9 Up 05:16:47 - 05:27:59 4114
La Pine/Gilchrist 05:22:24 -48.0 Dark Up 46.5 132.7 Up 05:16:48 - 05:28:00 4095
North Lake 05:22:22 -48.6 Dark Up 47.1 133.1 Up 05:16:46 - 05:27:58 4053
Paisley 05:22:22 -49.0 Dark Up 47.7 133.1 Up 05:16:46 - 05:27:58 4001
Klamath Falls 05:22:26 -48.3 Dark Up 47.3 131.2 Up 05:16:50 - 05:28:02 3960
Lakeview 05:22:22 -49.3 Dark Up 48.1 132.9 Up 05:16:46 - 05:27:58 3953
Cedarville 05:22:23 -49.6 Dark Up 48.7 132.6 Up 05:16:47 - 05:27:59 3891
Fall River/Burney 05:22:27 -48.9 Dark Up 48.3 130.7 Up 05:16:51 - 05:28:03 3848
Susanville 05:22:25 -49.6 Dark Up 49.1 131.0 Up 05:16:49 - 05:28:01 3786
Greenville 05:22:27 -49.4 Dark Up 49.2 130.4 Up 05:16:51 - 05:28:03 3760
Gimple 05:22:27 -49.5 Dark Up 49.2 130.5 Up 05:16:51 - 05:28:03 3760
Niwot 05:21:33 -60.4 Dark Up 56.6 152.9 Up 05:15:57 - 05:27:09 3751
Quincy 05:22:27 -49.5 Dark Up 49.3 130.3 Up 05:16:51 - 05:28:03 3741
SwRI 05:21:33 -60.4 Dark Up 56.7 152.6 Up 05:15:57 - 05:27:09 3740
Portola 05:22:26 -49.9 Dark Up 49.7 130.7 Up 05:16:50 - 05:28:02 3728
Reno 05:22:24 -50.4 Dark Up 50.2 131.3 Up 05:16:48 - 05:28:00 3700
Carson City 05:22:24 -50.5 Dark Up 50.4 131.0 Up 05:16:48 - 05:28:00 3666
Yerington 05:22:22 -51.1 Dark Up 50.9 131.6 Up 05:16:46 - 05:27:58 3645
Gardnerville 05:22:24 -50.6 Dark Up 50.6 130.8 Up 05:16:48 - 05:28:00 3642
Hawthorne 05:22:21 -51.6 Dark Up 51.6 131.8 Up 05:16:45 - 05:27:57 3599
Tonopah 05:22:17 -52.8 Dark Up 52.7 133.2 Up 05:16:41 - 05:27:53 3551
Lee Vining 05:22:23 -51.3 Dark Up 51.6 130.7 Up 05:16:47 - 05:27:59 3545
Bishop 05:22:22 -52.0 Dark Up 52.5 131.0 Up 05:16:46 - 05:27:58 3485
Beatty 05:22:17 -53.4 Dark Up 53.7 132.7 Up 05:16:41 - 05:27:53 3436
Indian Springs 05:22:13 -54.3 Dark Up 54.6 133.8 Up 05:16:37 - 05:27:49 3402
Henderson 05:22:11 -55.0 Dark Up 55.4 134.2 Up 05:16:35 - 05:27:47 3348
Searchlight/Boulder City 05:22:11 -55.2 Dark Up 55.8 133.7 Up 05:16:35 - 05:27:47 3291
Patrick 05:22:08 -56.0 Dark Up 56.4 135.1 Up 05:16:32 - 05:27:44 3285
CPSLO 05:22:32 -50.7 Dark Up 52.4 126.2 Up 05:16:56 - 05:28:08 3285
Kingman/Dolan Springs 05:22:09 -55.9 Dark Up 56.5 134.6 Up 05:16:33 - 05:27:45 3263
Laughlin/Bullhead City 05:22:10 -55.5 Dark Up 56.2 133.9 Up 05:16:34 - 05:27:46 3261
DCO 05:22:05 -56.6 Dark Up 57.1 135.8 Up 05:16:29 - 05:27:41 3254
Mohave Valley 05:22:11 -55.6 Dark Up 56.4 133.6 Up 05:16:35 - 05:27:47 3233
Lake Havasu City 05:22:10 -55.9 Dark Up 56.8 133.5 Up 05:16:34 - 05:27:46 3193
Wildwood 05:22:26 -52.5 Dark Up 54.4 127.4 Up 05:16:50 - 05:28:02 3158
Parker 05:22:10 -56.0 Dark Up 57.1 133.1 Up 05:16:34 - 05:27:46 3157
Idyllwild 05:22:19 -54.1 Dark Up 55.9 129.4 Up 05:16:43 - 05:27:55 3119
George/Scottsdale 05:22:01 -58.0 Dark Up 58.8 136.2 Up 05:16:25 - 05:27:37 3113
Blythe 05:22:12 -55.8 Dark Up 57.2 132.1 Up 05:16:36 - 05:27:48 3104
Calipatria 05:22:16 -55.2 Dark Up 57.0 130.3 Up 05:16:40 - 05:27:52 3055
Yuma 05:22:13 -56.0 Dark Up 57.8 131.0 Up 05:16:37 - 05:27:49 3010

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 250112, (2020/01/14 05:20UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 14.31  73
Alhena         06:37:42.8 +16:23:57  1.9  7.86  61
PPM 151446     06:52:49.4 +08:22:49  6.0  1.03  58
PPM 151366     06:50:38.6 +09:15:32  8.1  0.48  59
PPM 151452     06:53:12.6 +09:47:42  8.6  0.43  58
PPM 151451     06:53:12.3 +09:14:31 10.6  0.24  58
250112         06:52:28.7 +09:24:31 16.3        58
Positions are for J2000

Event circumstances last updated at 2019/12/10 22:46:34 UT

Marc W. Buie, Southwest Research Institute

RECON