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 09:35:44 UTC

J2000 position of star is 20:42:35.2 +60:16:05
Equinox of date position of star is 20:42:58.4 +60:19:59
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 1077 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      21:19:02.1 +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 10.5 km RECON observability=0.2 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
CPSLO 09:34:13 -61.4 Dark Up 10.4 17.8 Really Low 09:31:55 - 09:36:30 4688
Quincy 09:34:20 -58.0 Dark Up 14.7 18.0 Really Low 09:32:03 - 09:36:38 4657
Fall River/Burney 09:34:24 -57.3 Dark Up 15.7 17.9 Really Low 09:32:06 - 09:36:41 4656
Greenville 09:34:21 -57.8 Dark Up 14.9 18.0 Really Low 09:32:03 - 09:36:38 4654
Gimple 09:34:20 -57.8 Dark Up 14.9 18.1 Really Low 09:32:03 - 09:36:38 4651
Klamath Falls 09:34:27 -56.5 Dark Up 16.7 17.8 Really Low 09:32:09 - 09:36:44 4649
Chiloquin 09:34:27 -56.2 Dark Up 17.0 17.8 Really Low 09:32:10 - 09:36:45 4646
Tulelake 09:34:25 -56.6 Dark Up 16.5 18.0 Really Low 09:32:07 - 09:36:42 4644
Portola 09:34:19 -57.9 Dark Up 14.7 18.2 Really Low 09:32:02 - 09:36:37 4641
Susanville 09:34:20 -57.5 Dark Up 15.2 18.2 Really Low 09:32:03 - 09:36:38 4640
Gardnerville 09:34:16 -58.2 Dark Up 14.1 18.5 Really Low 09:31:59 - 09:36:34 4626
Carson City 09:34:16 -58.0 Dark Up 14.3 18.5 Really Low 09:31:59 - 09:36:34 4625
Reno 09:34:17 -57.8 Dark Up 14.6 18.5 Really Low 09:31:59 - 09:36:34 4621
La Pine/Gilchrist 09:34:28 -55.2 Dark Up 18.2 18.1 Really Low 09:32:11 - 09:36:46 4613
Wildwood 09:34:04 -61.1 Dark Up 9.7 18.6 Really Low 09:31:47 - 09:36:22 4612
Lee Vining 09:34:13 -58.6 Dark Up 13.3 18.7 Really Low 09:31:55 - 09:36:30 4612
Oregon Observatory 09:34:28 -55.0 Dark Up 18.4 18.2 Really Low 09:32:11 - 09:36:46 4607
Cedarville 09:34:21 -56.4 Dark Up 16.4 18.5 Really Low 09:32:03 - 09:36:38 4607
Yerington 09:34:14 -57.9 Dark Up 14.3 18.7 Really Low 09:31:57 - 09:36:32 4603
Sisters 09:34:29 -54.7 Dark Up 18.7 18.2 Really Low 09:32:12 - 09:36:47 4603
Lakeview 09:34:23 -55.9 Dark Up 17.0 18.5 Really Low 09:32:05 - 09:36:40 4602
North Lake 09:34:26 -55.3 Dark Up 17.9 18.3 Really Low 09:32:08 - 09:36:43 4602
Paisley 09:34:24 -55.6 Dark Up 17.4 18.5 Really Low 09:32:06 - 09:36:41 4600
Bend 09:34:28 -54.8 Dark Up 18.6 18.2 Really Low 09:32:11 - 09:36:46 4599
Redmond 09:34:28 -54.5 Dark Up 18.8 18.3 Really Low 09:32:11 - 09:36:46 4590
Bishop 09:34:09 -58.7 Dark Up 12.9 18.9 Really Low 09:31:52 - 09:36:27 4589
Hawthorne 09:34:12 -58.0 Dark Up 13.9 18.9 Really Low 09:31:54 - 09:36:29 4588
Madras/Culver 09:34:29 -54.2 Dark Up 19.1 18.4 Really Low 09:32:11 - 09:36:46 4581
Lone Pine 09:34:07 -59.1 Dark Up 12.3 19.0 Really Low 09:31:49 - 09:36:24 4581
Maupin 09:34:30 -53.7 Dark Up 19.7 18.5 Really Low 09:32:12 - 09:36:47 4568
The Dalles 09:34:31 -53.4 Dark Up 20.1 18.5 Low 09:32:13 - 09:36:48 4562
Goldendale 09:34:30 -53.1 Dark Up 20.3 18.7 Low 09:32:13 - 09:36:48 4545
Tonopah 09:34:07 -57.5 Dark Up 13.9 19.5 Really Low 09:31:50 - 09:36:25 4537
Idyllwild 09:33:59 -60.2 Dark Up 9.9 19.4 Really Low 09:31:41 - 09:36:16 4534
Beatty 09:34:04 -58.1 Dark Up 12.9 19.6 Really Low 09:31:46 - 09:36:21 4527
Yakima 09:34:30 -52.3 Dark Up 21.1 18.9 Low 09:32:13 - 09:36:48 4518
Toppenish/White Swan 09:34:30 -52.5 Dark Up 21.0 18.9 Low 09:32:13 - 09:36:48 4518
Ellensburg 09:34:31 -52.0 Dark Up 21.5 19.0 Low 09:32:13 - 09:36:48 4508
George/Umatilla 09:34:27 -52.4 Dark Up 20.8 19.4 Low 09:32:09 - 09:36:44 4494
Wenatchee 09:34:32 -51.6 Dark Up 22.0 19.1 Low 09:32:14 - 09:36:49 4490
Indian Springs 09:34:00 -57.7 Dark Up 12.9 20.0 Really Low 09:31:42 - 09:36:17 4483
Calipatria 09:33:55 -59.8 Dark Up 9.7 19.8 Really Low 09:31:37 - 09:36:12 4482
Entiat 09:34:31 -51.3 Dark Up 22.2 19.2 Low 09:32:14 - 09:36:49 4480
Pasco 09:34:27 -52.1 Dark Up 21.1 19.5 Low 09:32:09 - 09:36:44 4479
PNWRO 09:34:24 -52.2 Dark Up 21.0 19.6 Low 09:32:07 - 09:36:42 4477
Manson/Chelan 09:34:32 -51.1 Dark Up 22.4 19.3 Low 09:32:14 - 09:36:49 4472
Henderson 09:33:58 -57.6 Dark Up 12.6 20.3 Really Low 09:31:41 - 09:36:16 4455
Brewster 09:34:31 -50.8 Dark Up 22.7 19.5 Low 09:32:14 - 09:36:49 4455
Searchlight/Boulder City 09:33:57 -57.9 Dark Up 12.0 20.2 Really Low 09:31:39 - 09:36:14 4454
Okanogan 09:34:31 -50.5 Dark Up 23.0 19.6 Low 09:32:14 - 09:36:49 4442
Yuma 09:33:51 -59.4 Dark Up 9.5 20.2 Really Low 09:31:34 - 09:36:09 4441
Blythe 09:33:53 -58.9 Dark Up 10.4 20.2 Really Low 09:31:35 - 09:36:10 4441
Mohave Valley 09:33:55 -58.1 Dark Up 11.6 20.3 Really Low 09:31:37 - 09:36:12 4440
Laughlin/Bullhead City 09:33:55 -57.9 Dark Up 11.9 20.4 Really Low 09:31:37 - 09:36:12 4440
Lake Havasu City 09:33:53 -58.2 Dark Up 11.3 20.4 Really Low 09:31:36 - 09:36:11 4429
Parker 09:33:53 -58.4 Dark Up 11.0 20.4 Really Low 09:31:35 - 09:36:10 4428
Tonasket 09:34:31 -50.1 Dark Up 23.4 19.7 Low 09:32:14 - 09:36:49 4428
Oroville 09:34:32 -50.0 Dark Up 23.6 19.8 Low 09:32:15 - 09:36:50 4421
Kingman/Dolan Springs 09:33:54 -57.6 Dark Up 12.0 20.6 Really Low 09:31:36 - 09:36:11 4416
Patrick 09:33:54 -57.3 Dark Up 12.3 20.7 Really Low 09:31:36 - 09:36:11 4407
DCO 09:33:51 -57.0 Dark Up 12.2 20.9 Really Low 09:31:34 - 09:36:09 4375
Niwot 09:33:41 -49.0 Dark Up 19.2 24.7 Really Low 09:31:23 - 09:35:58 3974

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 2017/12/05 19:14:31 UT

Marc W. Buie, Southwest Research Institute

RECON