RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star UC4-752-063557 with event index number of 181414

Geocentric closest approach at 2019/02/15 09:35:43 UTC

J2000 position of star is 20:42:35.2 +60:16:05
Equinox of date position of star is 20:42:57.7 +60:19:52
Stellar brightness R=15.8, use SENSEUP=128
Star is 92 degrees from the moon. Moon is 76% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 12.3 AU from the Sun and 12.5 AU from the Earth.
The TNO is moving 26.0 km/sec on the sky relative to the star, or, 10.3 arcsec/hr.
The 1-sigma error in the time of the event is 22 seconds.
The 1-sigma cross-track error in the shadow position is 1081 km.
The sky-plane scale is 9067.2 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.2 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2019/02/15 09:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:05.1 +45:20:58  1.3 14.99 103
Alderamin      21:19:02.0 +62:40:01  2.4  4.88  87
PPM 022340     20:43:03.9 +60:40:14  6.1  0.33  91
PPM 022361     20:44:50.2 +60:25:38  8.7  0.24  91
342842         20:43:00.0 +60:20:15 15.8        91
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 10.1 km RECON observability=0.2 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)
CPSLO 09:34:11 -61.4 Dark Up 10.4 17.8 Really Low 09:31:53 - 09:36:29 4484
Quincy 09:34:19 -58.0 Dark Up 14.7 18.0 Really Low 09:32:01 - 09:36:37 4454
Fall River/Burney 09:34:22 -57.3 Dark Up 15.7 17.9 Really Low 09:32:04 - 09:36:40 4454
Greenville 09:34:19 -57.8 Dark Up 14.9 18.0 Really Low 09:32:01 - 09:36:37 4452
Gimple 09:34:18 -57.8 Dark Up 14.9 18.1 Really Low 09:32:00 - 09:36:36 4449
Klamath Falls 09:34:25 -56.5 Dark Up 16.7 17.8 Really Low 09:32:07 - 09:36:43 4448
Chiloquin 09:34:25 -56.2 Dark Up 17.0 17.8 Really Low 09:32:07 - 09:36:43 4445
Tulelake 09:34:24 -56.6 Dark Up 16.5 18.0 Really Low 09:32:06 - 09:36:42 4443
Portola 09:34:16 -57.9 Dark Up 14.7 18.2 Really Low 09:31:58 - 09:36:34 4439
Susanville 09:34:18 -57.5 Dark Up 15.2 18.2 Really Low 09:32:00 - 09:36:36 4438
Gardnerville 09:34:13 -58.2 Dark Up 14.1 18.5 Really Low 09:31:55 - 09:36:31 4423
Carson City 09:34:14 -58.0 Dark Up 14.3 18.5 Really Low 09:31:56 - 09:36:32 4422
Reno 09:34:15 -57.8 Dark Up 14.6 18.5 Really Low 09:31:57 - 09:36:33 4419
La Pine/Gilchrist 09:34:26 -55.2 Dark Up 18.2 18.1 Really Low 09:32:08 - 09:36:44 4412
Lee Vining 09:34:11 -58.6 Dark Up 13.3 18.7 Really Low 09:31:53 - 09:36:29 4410
Wildwood 09:34:02 -61.1 Dark Up 9.7 18.6 Really Low 09:31:44 - 09:36:20 4408
Oregon Observatory 09:34:27 -55.0 Dark Up 18.4 18.2 Really Low 09:32:09 - 09:36:45 4406
Cedarville 09:34:19 -56.4 Dark Up 16.4 18.5 Really Low 09:32:01 - 09:36:37 4405
Sisters 09:34:27 -54.7 Dark Up 18.7 18.1 Really Low 09:32:09 - 09:36:45 4401
Yerington 09:34:13 -57.9 Dark Up 14.3 18.7 Really Low 09:31:55 - 09:36:31 4401
Lakeview 09:34:21 -55.9 Dark Up 17.0 18.5 Really Low 09:32:03 - 09:36:39 4400
North Lake 09:34:24 -55.3 Dark Up 17.9 18.3 Really Low 09:32:06 - 09:36:42 4400
Paisley 09:34:22 -55.6 Dark Up 17.4 18.5 Really Low 09:32:04 - 09:36:40 4398
Bend 09:34:26 -54.8 Dark Up 18.6 18.2 Really Low 09:32:08 - 09:36:44 4398
Redmond 09:34:27 -54.5 Dark Up 18.8 18.3 Really Low 09:32:09 - 09:36:45 4389
Bishop 09:34:07 -58.7 Dark Up 12.9 18.9 Really Low 09:31:49 - 09:36:25 4386
Hawthorne 09:34:09 -58.0 Dark Up 13.9 18.9 Really Low 09:31:51 - 09:36:27 4385
Madras/Culver 09:34:27 -54.2 Dark Up 19.1 18.4 Really Low 09:32:09 - 09:36:45 4379
Lone Pine 09:34:06 -59.1 Dark Up 12.3 19.0 Really Low 09:31:48 - 09:36:24 4377
Maupin 09:34:28 -53.7 Dark Up 19.7 18.5 Really Low 09:32:10 - 09:36:46 4366
The Dalles 09:34:29 -53.4 Dark Up 20.1 18.5 Low 09:32:11 - 09:36:47 4359
Goldendale 09:34:28 -53.1 Dark Up 20.3 18.7 Low 09:32:10 - 09:36:46 4343
Tonopah 09:34:05 -57.5 Dark Up 13.9 19.5 Really Low 09:31:47 - 09:36:23 4334
Idyllwild 09:33:56 -60.2 Dark Up 9.9 19.4 Really Low 09:31:38 - 09:36:14 4330
Beatty 09:34:02 -58.1 Dark Up 12.9 19.6 Really Low 09:31:44 - 09:36:20 4322
Yakima 09:34:29 -52.3 Dark Up 21.1 18.9 Low 09:32:11 - 09:36:47 4316
Toppenish/White Swan 09:34:28 -52.5 Dark Up 21.0 18.9 Low 09:32:10 - 09:36:46 4316
Ellensburg 09:34:30 -52.0 Dark Up 21.5 19.0 Low 09:32:12 - 09:36:48 4306
George/Umatilla 09:34:24 -52.4 Dark Up 20.8 19.4 Low 09:32:06 - 09:36:42 4292
Wenatchee 09:34:30 -51.6 Dark Up 22.0 19.1 Low 09:32:12 - 09:36:48 4288
Indian Springs 09:33:58 -57.7 Dark Up 12.9 20.0 Really Low 09:31:40 - 09:36:16 4279
Entiat 09:34:30 -51.3 Dark Up 22.2 19.2 Low 09:32:12 - 09:36:48 4278
Pasco 09:34:24 -52.1 Dark Up 21.1 19.5 Low 09:32:06 - 09:36:42 4277
Calipatria 09:33:53 -59.8 Dark Up 9.7 19.8 Really Low 09:31:35 - 09:36:11 4276
PNWRO 09:34:24 -52.2 Dark Up 21.0 19.6 Low 09:32:06 - 09:36:42 4275
Manson/Chelan 09:34:30 -51.1 Dark Up 22.4 19.3 Low 09:32:12 - 09:36:48 4271
Brewster 09:34:30 -50.8 Dark Up 22.7 19.5 Low 09:32:12 - 09:36:48 4253
Henderson 09:33:56 -57.6 Dark Up 12.6 20.3 Really Low 09:31:38 - 09:36:14 4250
Searchlight/Boulder City 09:33:55 -58.0 Dark Up 12.0 20.2 Really Low 09:31:37 - 09:36:13 4249
Okanogan 09:34:30 -50.5 Dark Up 23.0 19.6 Low 09:32:12 - 09:36:48 4240
Yuma 09:33:50 -59.4 Dark Up 9.5 20.2 Really Low 09:31:32 - 09:36:08 4235
Blythe 09:33:51 -58.9 Dark Up 10.4 20.2 Really Low 09:31:33 - 09:36:09 4235
Mohave Valley 09:33:53 -58.1 Dark Up 11.6 20.3 Really Low 09:31:35 - 09:36:11 4234
Laughlin/Bullhead City 09:33:53 -57.9 Dark Up 11.9 20.4 Really Low 09:31:35 - 09:36:11 4234
Tonasket 09:34:30 -50.2 Dark Up 23.4 19.7 Low 09:32:12 - 09:36:48 4226
Lake Havasu City 09:33:51 -58.2 Dark Up 11.3 20.4 Really Low 09:31:33 - 09:36:09 4223
Parker 09:33:51 -58.4 Dark Up 11.0 20.4 Really Low 09:31:33 - 09:36:09 4222
Oroville 09:34:31 -50.0 Dark Up 23.6 19.8 Low 09:32:13 - 09:36:49 4219
Kingman/Dolan Springs 09:33:52 -57.6 Dark Up 12.0 20.6 Really Low 09:31:34 - 09:36:10 4211
Patrick 09:33:52 -57.3 Dark Up 12.3 20.7 Really Low 09:31:34 - 09:36:10 4202
DCO 09:33:50 -57.0 Dark Up 12.2 20.9 Really Low 09:31:32 - 09:36:08 4170
Niwot 09:33:39 -49.0 Dark Up 19.2 24.7 Really Low 09:31:21 - 09:35:57 3768

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 342842, (2019/02/15 09:36UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 14.99 103
Alderamin      21:18:35.2 +62:35:09  2.4  4.88  87
PPM 022340     20:42:39.5 +60:36:03  6.1  0.33  91
PPM 022361     20:44:25.3 +60:21:26  8.7  0.24  91
342842         20:42:35.2 +60:16:05 15.8        92
Positions are for J2000

Event circumstances last updated at 2017/05/20 18:10:27 UT

Marc W. Buie, Southwest Research Institute

RECON