RECON: TNO occultation with 342842

Event between (342842) 08YB3 and star GA1520:05796893 with event index number of 191616

Geocentric closest approach at 2019/05/09 07:42:30 UTC

J2000 position of star is 21:05:57.5 +63:45:20
Equinox of date position of star is 21:06:19.7 +63:49:48
Stellar brightness G=15.4, use SENSEUP=128
Star is 90 degrees from the moon. Moon is 21% illuminated.
TNO apparent brightness V=20.7

[RECON map]
TNO is 12.4 AU from the Sun and 12.7 AU from the Earth.
The TNO is moving 22.5 km/sec on the sky relative to the star, or, 8.8 arcsec/hr.
The 1-sigma error in the time of the event is 47 seconds.
The 1-sigma cross-track error in the shadow position is 627 km.
The sky-plane scale is 9197.5 km/arcsec.

The TNO has an absolute magnitude Hv=9.3
Diameter=83.2 km assuming a 5% albedo -- 3.7 sec chord
Diameter=34.0 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 342842, (2019/05/09 07:42UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:05.5 +45:21:01  1.3 18.79 108
Alderamin      21:19:02.4 +62:40:05  2.4  1.84  91
PPM 022646     21:09:53.6 +63:22:30  6.4  0.60  91
PPM 022614     21:07:15.5 +63:51:25  8.3  0.10  90
342842         21:06:20.8 +63:50:01 15.4        90
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 19.7 km RECON observability=1.0 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)
Penticton 07:44:14 -23.1 Dark Down 41.8 36.3 Up 07:39:49 - 07:48:40 -5860
Oroville 07:44:13 -23.7 Dark Down 41.4 36.0 Up 07:39:47 - 07:48:38 -5915
Tonasket 07:44:13 -24.0 Dark Down 41.2 35.9 Up 07:39:47 - 07:48:38 -5935
Okanogan 07:44:13 -24.3 Dark Down 40.8 35.7 Up 07:39:47 - 07:48:38 -5962
Brewster 07:44:14 -24.5 Dark Down 40.6 35.5 Up 07:39:49 - 07:48:40 -5982
Manson/Chelan 07:44:15 -24.7 Dark Down 40.2 35.3 Up 07:39:49 - 07:48:40 -5993
Entiat 07:44:15 -25.0 Dark Down 40.0 35.2 Up 07:39:49 - 07:48:40 -6011
Wenatchee 07:44:15 -25.2 Dark Down 39.8 35.0 Up 07:39:49 - 07:48:40 -6031
Ellensburg 07:44:16 -25.6 Dark Down 39.4 34.8 Up 07:39:50 - 07:48:41 -6062
Yakima 07:44:15 -26.0 Dark Down 39.0 34.6 Up 07:39:50 - 07:48:41 -6096
Toppenish/White Swan 07:44:15 -26.2 Dark Down 38.9 34.5 Up 07:39:49 - 07:48:40 -6118
Pasco 07:44:11 -26.4 Dark Down 39.3 34.8 Up 07:39:45 - 07:48:36 -6151
Goldendale 07:44:15 -26.8 Dark Down 38.3 34.2 Up 07:39:50 - 07:48:41 -6156
The Dalles 07:44:17 -27.0 Dark Down 38.0 34.0 Up 07:39:51 - 07:48:42 -6167
George/Umatilla 07:44:11 -26.7 Dark Down 38.9 34.6 Up 07:39:46 - 07:48:37 -6175
PNWRO 07:44:10 -26.7 Dark Down 39.2 34.7 Up 07:39:45 - 07:48:36 -6176
Maupin 07:44:16 -27.4 Dark Down 37.6 33.8 Up 07:39:50 - 07:48:41 -6204
Madras/Culver 07:44:16 -27.9 Dark Down 37.2 33.6 Up 07:39:50 - 07:48:41 -6248
Sisters 07:44:17 -28.3 Dark Down 36.7 33.3 Up 07:39:52 - 07:48:43 -6266
Redmond 07:44:15 -28.3 Dark Down 36.9 33.4 Up 07:39:50 - 07:48:41 -6277
Bend 07:44:15 -28.5 Dark Down 36.6 33.3 Up 07:39:50 - 07:48:41 -6291
Oregon Observatory 07:44:16 -28.7 Dark Down 36.4 33.2 Up 07:39:50 - 07:48:41 -6302
La Pine/Gilchrist 07:44:16 -28.9 Dark Down 36.2 33.1 Up 07:39:51 - 07:48:42 -6318
North Lake 07:44:15 -29.3 Dark Down 36.1 33.1 Up 07:39:49 - 07:48:40 -6365
Chiloquin 07:44:17 -30.0 Dark Down 35.2 32.6 Up 07:39:51 - 07:48:42 -6399
Paisley 07:44:13 -29.9 Dark Down 35.8 32.9 Up 07:39:48 - 07:48:39 -6417
Klamath Falls 07:44:16 -30.3 Dark Down 34.9 32.5 Up 07:39:50 - 07:48:41 -6428
Tulelake 07:44:15 -30.6 Dark Down 34.8 32.4 Up 07:39:50 - 07:48:41 -6456
Lakeview 07:44:12 -30.4 Dark Down 35.4 32.8 Up 07:39:47 - 07:48:38 -6461
Cedarville 07:44:11 -31.1 Dark Down 34.9 32.6 Up 07:39:45 - 07:48:36 -6516
Fall River/Burney 07:44:14 -31.5 Dark Down 34.1 32.1 Up 07:39:48 - 07:48:39 -6528
Susanville 07:44:11 -32.2 Dark Down 33.8 32.1 Up 07:39:46 - 07:48:37 -6593
Greenville 07:44:12 -32.4 Dark Down 33.5 31.9 Up 07:39:47 - 07:48:38 -6608
Gimple 07:44:12 -32.4 Dark Down 33.5 31.9 Up 07:39:47 - 07:48:38 -6610
Quincy 07:44:12 -32.6 Dark Down 33.3 31.8 Up 07:39:46 - 07:48:37 -6623
Portola 07:44:10 -32.8 Dark Down 33.4 31.9 Up 07:39:45 - 07:48:36 -6643
Reno 07:44:08 -33.1 Dark Down 33.4 31.9 Up 07:39:43 - 07:48:34 -6677
Carson City 07:44:08 -33.4 Dark Down 33.1 31.8 Up 07:39:42 - 07:48:33 -6704
Gardnerville 07:44:08 -33.7 Dark Down 32.9 31.7 Up 07:39:42 - 07:48:33 -6724
Yerington 07:44:05 -33.7 Dark Down 33.2 31.9 Up 07:39:39 - 07:48:30 -6732
Hawthorne 07:44:04 -34.1 Dark Down 33.0 31.8 Up 07:39:38 - 07:48:29 -6777
Niwot 07:43:21 -31.6 Dark Down 40.0 34.5 Up 07:38:55 - 07:47:46 -6777
Lee Vining 07:44:04 -34.7 Dark Down 32.3 31.5 Up 07:39:39 - 07:48:30 -6809
Tonopah 07:43:58 -34.6 Dark Down 33.2 31.9 Up 07:39:33 - 07:48:24 -6837
Bishop 07:44:02 -35.3 Dark Down 32.1 31.5 Up 07:39:36 - 07:48:27 -6867
Lone Pine 07:43:59 -36.1 Dark Down 31.6 31.3 Up 07:39:34 - 07:48:25 -6929
Beatty 07:43:56 -35.8 Dark Down 32.4 31.6 Up 07:39:30 - 07:48:21 -6930
CPSLO 07:44:07 -37.3 Dark Down 29.4 30.4 Low 07:39:41 - 07:48:32 -6967
Indian Springs 07:43:51 -36.1 Dark Down 32.6 31.6 Up 07:39:26 - 07:48:17 -6971
Henderson 07:43:49 -36.6 Dark Down 32.4 31.6 Up 07:39:23 - 07:48:14 -7020
Searchlight/Boulder City 07:43:48 -37.2 Dark Down 31.9 31.4 Up 07:39:22 - 07:48:13 -7062
Patrick 07:43:43 -37.2 Dark Down 32.3 31.5 Up 07:39:17 - 07:48:08 -7080
Laughlin/Bullhead City 07:43:46 -37.5 Dark Down 31.8 31.3 Up 07:39:20 - 07:48:11 -7088
Kingman/Dolan Springs 07:43:44 -37.4 Dark Down 32.1 31.4 Up 07:39:19 - 07:48:10 -7093
Wildwood 07:43:58 -38.6 Dark Down 29.2 30.4 Low 07:39:33 - 07:48:24 -7095
Mohave Valley 07:43:45 -37.8 Dark Down 31.6 31.3 Up 07:39:19 - 07:48:10 -7107
DCO 07:43:41 -37.5 Dark Down 32.4 31.5 Up 07:39:15 - 07:48:06 -7110
Lake Havasu City 07:43:44 -38.1 Dark Down 31.4 31.2 Up 07:39:18 - 07:48:09 -7139
Idyllwild 07:43:52 -39.0 Dark Down 29.7 30.6 Low 07:39:27 - 07:48:18 -7155
Parker 07:43:44 -38.5 Dark Down 31.1 31.1 Up 07:39:18 - 07:48:09 -7163
Blythe 07:43:44 -39.0 Dark Down 30.5 30.9 Up 07:39:19 - 07:48:10 -7196
Calipatria 07:43:46 -39.6 Dark Down 29.7 30.6 Low 07:39:21 - 07:48:12 -7215
Yuma 07:43:43 -40.0 Dark Down 29.7 30.6 Low 07:39:17 - 07:48:08 -7258

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, (2019/05/09 07:42UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 18.79 108
Alderamin      21:18:35.2 +62:35:09  2.4  1.84  91
PPM 022646     21:09:28.9 +63:17:45  6.4  0.60  91
PPM 022614     21:06:52.1 +63:46:42  8.3  0.10  90
342842         21:05:57.5 +63:45:20 15.4        90
Positions are for J2000

Event circumstances last updated at 2018/06/11 23:07:52 UT

Marc W. Buie, Southwest Research Institute

RECON