RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1500:05886461 with event index number of 177612

Geocentric closest approach at 2019/01/27 12:07:28 UTC

J2000 position of star is 20:31:40.3 +60:18:26
Equinox of date position of star is 20:32:02.9 +60:22:13
Stellar brightness G=13.7, use SENSEUP=64
Star is 99 degrees from the moon. Moon is 54% illuminated.
TNO apparent brightness V=20.6

[RECON map]
TNO is 12.2 AU from the Sun and 12.4 AU from the Earth.
The TNO is moving 28.2 km/sec on the sky relative to the star, or, 11.3 arcsec/hr.
The 1-sigma error in the time of the event is 20 seconds.
The 1-sigma cross-track error in the shadow position is 1069 km.
The sky-plane scale is 8983.7 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.0 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2019/01/27 12:07UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:05.0 +45:20:57  1.3 15.10 101
Alderamin      21:19:02.0 +62:40:00  2.4  6.04 105
PPM 022320     20:40:42.0 +60:34:29  6.4  1.08 100
PPM 022236     20:32:27.6 +60:29:14  7.4  0.12  99
342842         20:32:03.7 +60:22:21 13.7        99
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 4.1 km RECON observability=0.7 and success probability=0.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sisters 12:04:33 -36.6 Dark Up 24.8 27.6 Low 12:02:25 - 12:06:41 5268
The Dalles 12:04:36 -36.1 Dark Up 26.1 28.1 Low 12:02:28 - 12:06:44 5261
Chiloquin 12:04:31 -37.1 Dark Up 23.2 27.1 Low 12:02:23 - 12:06:39 5260
La Pine/Gilchrist 12:04:32 -36.7 Dark Up 24.3 27.5 Low 12:02:24 - 12:06:40 5254
Oregon Observatory 12:04:33 -36.6 Dark Up 24.5 27.6 Low 12:02:25 - 12:06:41 5253
Klamath Falls 12:04:29 -37.1 Dark Up 22.9 27.1 Low 12:02:21 - 12:06:37 5249
Maupin 12:04:36 -36.1 Dark Up 25.7 28.0 Low 12:02:28 - 12:06:44 5248
Bend 12:04:33 -36.5 Dark Up 24.7 27.7 Low 12:02:25 - 12:06:41 5247
Madras/Culver 12:04:34 -36.3 Dark Up 25.2 27.9 Low 12:02:26 - 12:06:42 5243
Redmond 12:04:33 -36.4 Dark Up 24.9 27.8 Low 12:02:25 - 12:06:41 5241
Goldendale 12:04:36 -35.8 Dark Up 26.4 28.3 Low 12:02:28 - 12:06:44 5241
Ellensburg 12:04:40 -35.4 Dark Up 27.5 28.7 Low 12:02:32 - 12:06:48 5239
Yakima 12:04:38 -35.5 Dark Up 27.2 28.6 Low 12:02:30 - 12:06:46 5235
Wenatchee 12:04:40 -35.2 Dark Up 28.0 28.9 Low 12:02:32 - 12:06:48 5231
Entiat 12:04:40 -35.1 Dark Up 28.2 29.0 Low 12:02:32 - 12:06:48 5227
Manson/Chelan 12:04:41 -35.0 Dark Up 28.4 29.1 Low 12:02:33 - 12:06:49 5226
Tulelake 12:04:28 -37.0 Dark Up 22.7 27.2 Low 12:02:20 - 12:06:36 5224
Toppenish/White Swan 12:04:37 -35.4 Dark Up 27.0 28.6 Low 12:02:29 - 12:06:45 5221
Penticton 12:04:44 -34.3 Dark Up 30.1 29.8 Up 12:02:36 - 12:06:52 5209
North Lake 12:04:30 -36.3 Dark Up 24.1 27.7 Low 12:02:22 - 12:06:38 5207
Brewster 12:04:41 -34.7 Dark Up 28.7 29.3 Low 12:02:33 - 12:06:49 5206
Fall River/Burney 12:04:27 -37.0 Dark Up 22.0 27.0 Low 12:02:19 - 12:06:35 5203
Okanogan 12:04:41 -34.5 Dark Up 29.0 29.4 Low 12:02:33 - 12:06:49 5197
Oroville 12:04:43 -34.3 Dark Up 29.6 29.7 Low 12:02:35 - 12:06:51 5195
Tonasket 12:04:43 -34.3 Dark Up 29.4 29.6 Low 12:02:35 - 12:06:51 5192
Paisley 12:04:29 -36.2 Dark Up 23.7 27.7 Low 12:02:21 - 12:06:37 5174
Greenville 12:04:24 -36.8 Dark Up 21.3 27.0 Low 12:02:16 - 12:06:32 5155
Lakeview 12:04:28 -36.1 Dark Up 23.3 27.6 Low 12:02:20 - 12:06:36 5152
Quincy 12:04:24 -36.8 Dark Up 21.1 27.0 Low 12:02:16 - 12:06:32 5150
Gimple 12:04:24 -36.7 Dark Up 21.3 27.1 Low 12:02:16 - 12:06:32 5149
George/Umatilla 12:04:35 -34.8 Dark Up 27.0 28.9 Low 12:02:27 - 12:06:43 5148
Susanville 12:04:24 -36.6 Dark Up 21.7 27.2 Low 12:02:16 - 12:06:32 5139
Pasco 12:04:36 -34.6 Dark Up 27.3 29.1 Low 12:02:28 - 12:06:44 5139
Cedarville 12:04:27 -36.1 Dark Up 22.8 27.6 Low 12:02:19 - 12:06:35 5128
PNWRO 12:04:35 -34.5 Dark Up 27.2 29.1 Low 12:02:27 - 12:06:43 5120
Portola 12:04:23 -36.5 Dark Up 21.2 27.1 Low 12:02:15 - 12:06:31 5114
Reno 12:04:22 -36.0 Dark Up 21.2 27.3 Low 12:02:14 - 12:06:30 5063
Carson City 12:04:21 -36.0 Dark Up 20.9 27.3 Low 12:02:13 - 12:06:29 5054
Gardnerville 12:04:21 -36.0 Dark Up 20.7 27.3 Low 12:02:13 - 12:06:29 5045
CPSLO 12:04:14 -37.0 Dark Up 17.1 26.4 Really Low 12:02:06 - 12:06:22 5026
Yerington 12:04:19 -35.6 Dark Up 20.9 27.5 Low 12:02:11 - 12:06:27 5004
Lee Vining 12:04:18 -35.6 Dark Up 20.0 27.3 Low 12:02:10 - 12:06:26 4977
Hawthorne 12:04:19 -35.2 Dark Up 20.7 27.6 Low 12:02:11 - 12:06:27 4955
Bishop 12:04:16 -35.1 Dark Up 19.7 27.5 Really Low 12:02:08 - 12:06:24 4910
Lone Pine 12:04:14 -34.9 Dark Up 19.2 27.5 Really Low 12:02:06 - 12:06:22 4866
Tonopah 12:04:16 -34.1 Dark Up 20.8 28.0 Low 12:02:08 - 12:06:24 4840
Wildwood 12:04:10 -35.4 Dark Up 16.7 26.9 Really Low 12:02:02 - 12:06:18 4839
Beatty 12:04:12 -33.8 Dark Up 19.9 28.0 Really Low 12:02:04 - 12:06:20 4776
Indian Springs 12:04:11 -32.9 Dark Up 20.0 28.3 Low 12:02:03 - 12:06:19 4686
Idyllwild 12:04:07 -33.8 Dark Up 17.1 27.5 Really Low 12:01:59 - 12:06:15 4683
Henderson 12:04:10 -32.4 Dark Up 19.8 28.4 Really Low 12:02:02 - 12:06:18 4618
Searchlight/Boulder City 12:04:09 -32.3 Dark Up 19.4 28.3 Really Low 12:02:01 - 12:06:17 4596
Calipatria 12:04:04 -32.8 Dark Up 17.1 27.8 Really Low 12:01:56 - 12:06:12 4571
Laughlin/Bullhead City 12:04:07 -32.1 Dark Up 19.2 28.4 Really Low 12:01:59 - 12:06:15 4561
Mohave Valley 12:04:07 -32.1 Dark Up 19.0 28.4 Really Low 12:01:59 - 12:06:15 4552
Kingman/Dolan Springs 12:04:07 -31.6 Dark Up 19.5 28.6 Really Low 12:01:59 - 12:06:15 4521
Lake Havasu City 12:04:06 -31.8 Dark Up 18.7 28.4 Really Low 12:01:58 - 12:06:14 4520
Blythe 12:04:05 -32.0 Dark Up 17.9 28.1 Really Low 12:01:57 - 12:06:13 4513
Patrick 12:04:07 -31.5 Dark Up 19.7 28.7 Really Low 12:01:59 - 12:06:15 4513
Parker 12:04:06 -31.8 Dark Up 18.4 28.3 Really Low 12:01:58 - 12:06:14 4507
Yuma 12:04:04 -32.1 Dark Up 17.0 28.0 Really Low 12:01:56 - 12:06:12 4487
DCO 12:04:06 -30.9 Dark Up 19.7 28.8 Really Low 12:01:58 - 12:06:14 4449
Niwot 12:04:11 -24.8 Dark Up 27.3 32.5 Low 12:02:03 - 12:06:19 4011

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, (2019/01/27 12:07UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 15.10 101
Alderamin      21:18:35.2 +62:35:09  2.4  6.04 105
PPM 022320     20:40:17.9 +60:30:23  6.4  1.08 100
PPM 022236     20:32:04.4 +60:25:19  7.4  0.12  99
342842         20:31:40.3 +60:18:26 13.7        99
Positions are for J2000

Event circumstances last updated at 2018/06/11 19:33:41 UT

Marc W. Buie, Southwest Research Institute

RECON