RECON: TNO occultation with 120178

Event between (120178) 03OP32 and star GA0920:18038742 with event index number of 203383

Geocentric closest approach at 2019/07/07 07:09:44 UTC

J2000 position of star is 22:36:50.3 +03:12:39
Equinox of date position of star is 22:37:46.5 +03:18:25
Stellar brightness G=18.6, use SENSEUP=128
Star is 164 degrees from the moon. Moon is 26% illuminated.
TNO apparent brightness V=20.3

[RECON map]
TNO is 42.4 AU from the Sun and 41.9 AU from the Earth.
The TNO is moving 12.0 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 220 seconds.
The 1-sigma cross-track error in the shadow position is 1710 km.
The sky-plane scale is 30386.8 km/arcsec.

The TNO has an absolute magnitude Hv=3.9
Diameter=1000.0 km assuming a 5% albedo -- 83.3 sec chord
Diameter=408.3 km assuming a 30% albedo -- 34.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 120178, (2019/07/07 07:10UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:43.5 -29:31:06  1.2 33.21 159
Markab         23:05:44.1 +15:18:38  2.5 13.83 155
37 Peg         22:30:57.1 +04:31:52  5.9  2.10 162
PPM 173268     22:39:28.9 +02:24:02  8.2  1.00 165
PPM 173222     22:36:52.5 +03:16:53 10.0  0.24 164
120178         22:37:49.8 +03:18:45 18.6       164
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 4.1 sigma about the mid-time.
The median site spacing is 18.6 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 08:10:06 -17.9 AT Down 26.6 119.4 Low 07:55:06 - 08:25:06 11681
Oroville 08:10:09 -18.4 Dark Down 27.0 119.3 Low 07:55:09 - 08:25:09 11641
Tonasket 08:10:11 -18.7 Dark Down 27.1 119.2 Low 07:55:11 - 08:25:11 11626
Okanogan 08:10:13 -19.0 Dark Down 27.2 118.9 Low 07:55:13 - 08:25:13 11605
Brewster 08:10:14 -19.3 Dark Down 27.2 118.6 Low 07:55:14 - 08:25:14 11589
Manson/Chelan 08:10:16 -19.5 Dark Down 27.1 118.2 Low 07:55:16 - 08:25:16 11579
Entiat 08:10:19 -19.7 Dark Down 27.2 118.0 Low 07:55:19 - 08:25:19 11565
Wenatchee 08:10:20 -20.0 Dark Down 27.2 117.8 Low 07:55:20 - 08:25:20 11549
Ellensburg 08:10:25 -20.4 Dark Down 27.3 117.5 Low 07:55:25 - 08:25:25 11524
Yakima 08:10:28 -20.8 Dark Down 27.5 117.3 Low 07:55:28 - 08:25:28 11496
Toppenish/White Swan 08:10:28 -21.0 Dark Down 27.7 117.3 Low 07:55:28 - 08:25:28 11479
Pasco 08:10:24 -21.1 Dark Down 28.5 118.4 Low 07:55:24 - 08:25:24 11457
Goldendale 08:10:34 -21.6 Dark Down 27.7 116.7 Low 07:55:34 - 08:25:34 11446
PNWRO 08:10:25 -21.4 Dark Down 28.8 118.5 Low 07:55:25 - 08:25:25 11438
George/Umatilla 08:10:26 -21.5 Dark Down 28.6 118.1 Low 07:55:26 - 08:25:26 11436
The Dalles 08:10:35 -21.8 Dark Down 27.6 116.3 Low 07:55:35 - 08:25:35 11434
Maupin 08:10:38 -22.2 Dark Down 27.8 116.2 Low 07:55:38 - 08:25:38 11403
Madras/Culver 08:10:42 -22.8 Dark Down 28.1 115.9 Low 07:55:42 - 08:25:42 11365
Sisters 08:10:46 -23.1 Dark Down 27.9 115.4 Low 07:55:46 - 08:25:46 11346
Redmond 08:10:44 -23.1 Dark Down 28.2 115.7 Low 07:55:44 - 08:25:44 11340
Bend 08:10:44 -23.3 Dark Down 28.2 115.5 Low 07:55:44 - 08:25:44 11326
Oregon Observatory 08:10:48 -23.5 Dark Down 28.2 115.3 Low 07:55:48 - 08:25:48 11315
La Pine/Gilchrist 08:10:49 -23.7 Dark Down 28.2 115.2 Low 07:55:49 - 08:25:49 11301
North Lake 08:10:49 -24.2 Dark Down 28.8 115.5 Low 07:55:49 - 08:25:49 11262
Chiloquin 08:10:58 -24.8 Dark Down 28.5 114.3 Low 07:55:58 - 08:25:58 11223
Paisley 08:10:51 -24.7 Dark Down 29.3 115.5 Low 07:55:51 - 08:25:51 11218
Klamath Falls 08:10:59 -25.2 Dark Down 28.7 114.2 Low 07:55:59 - 08:25:59 11197
Lakeview 08:10:53 -25.2 Dark Down 29.7 115.4 Low 07:55:53 - 08:25:53 11178
Tulelake 08:11:00 -25.4 Dark Down 29.0 114.4 Low 07:56:00 - 08:26:00 11173
Cedarville 08:10:56 -25.9 Dark Down 30.1 115.2 Up 07:55:56 - 08:25:56 11126
Fall River/Burney 08:11:04 -26.4 Dark Down 29.5 114.0 Low 07:56:04 - 08:26:04 11103
Susanville 08:11:05 -27.0 Dark Down 30.2 114.3 Up 07:56:05 - 08:26:05 11046
Greenville 08:11:08 -27.3 Dark Down 30.1 113.9 Up 07:56:08 - 08:26:08 11028
Gimple 08:11:07 -27.3 Dark Down 30.2 114.0 Up 07:56:07 - 08:26:07 11027
Quincy 08:11:09 -27.5 Dark Down 30.2 113.8 Up 07:56:09 - 08:26:09 11013
Portola 08:11:08 -27.6 Dark Down 30.6 114.1 Up 07:56:08 - 08:26:08 10997
Reno 08:11:06 -27.8 Dark Down 31.2 114.5 Up 07:56:06 - 08:26:06 10969
Carson City 08:11:08 -28.2 Dark Down 31.3 114.3 Up 07:56:08 - 08:26:08 10940
Gardnerville 08:11:07 -28.4 Dark Down 31.5 114.2 Up 07:56:07 - 08:26:07 10920
Yerington 08:11:07 -28.4 Dark Down 31.9 114.7 Up 07:56:07 - 08:26:07 10917
Hawthorne 08:11:07 -28.8 Dark Down 32.4 114.9 Up 07:56:07 - 08:26:07 10873
Lee Vining 08:11:12 -29.4 Dark Down 32.3 114.2 Up 07:56:12 - 08:26:12 10834
Niwot 08:09:51 -25.5 Dark Down 40.3 128.2 Up 07:54:51 - 08:24:51 10828
Tonopah 08:11:03 -29.2 Dark Down 33.6 115.8 Up 07:56:03 - 08:26:03 10818
Bishop 08:11:12 -30.0 Dark Down 33.1 114.4 Up 07:56:12 - 08:26:12 10776
Beatty 08:11:07 -30.3 Dark Down 34.5 115.5 Up 07:56:07 - 08:26:07 10718
Lone Pine 08:11:14 -30.7 Dark Down 33.7 114.3 Up 07:56:14 - 08:26:14 10709
Indian Springs 08:11:03 -30.6 Dark Down 35.4 116.2 Up 07:56:03 - 08:26:03 10677
CPSLO 08:11:33 -32.1 Dark Down 32.3 111.5 Up 07:56:33 - 08:26:33 10634
Henderson 08:11:03 -31.0 Dark Down 36.1 116.4 Up 07:56:03 - 08:26:03 10623
Searchlight/Boulder City 08:11:05 -31.6 Dark Down 36.4 116.1 Up 07:56:05 - 08:26:05 10574
Patrick 08:11:00 -31.5 Dark Down 37.2 117.0 Up 07:56:00 - 08:26:00 10555
Laughlin/Bullhead City 08:11:05 -31.9 Dark Down 36.8 116.2 Up 07:56:05 - 08:26:05 10544
Kingman/Dolan Springs 08:11:02 -31.8 Dark Down 37.2 116.7 Up 07:56:02 - 08:26:02 10539
Mohave Valley 08:11:08 -32.1 Dark Down 37.0 116.1 Up 07:56:08 - 08:26:08 10521
DCO 08:10:58 -31.8 Dark Down 37.9 117.4 Up 07:55:58 - 08:25:58 10520
Wildwood 08:11:30 -33.2 Dark Down 34.3 112.3 Up 07:56:30 - 08:26:30 10505
Lake Havasu City 08:11:07 -32.5 Dark Down 37.3 116.0 Up 07:56:07 - 08:26:07 10483
Parker 08:11:09 -32.8 Dark Down 37.5 115.8 Up 07:56:09 - 08:26:09 10452
Idyllwild 08:11:22 -33.5 Dark Down 35.9 113.6 Up 07:56:22 - 08:26:22 10449
Blythe 08:11:15 -33.4 Dark Down 37.5 115.2 Up 07:56:15 - 08:26:15 10411
Calipatria 08:11:19 -34.0 Dark Down 37.0 114.1 Up 07:56:19 - 08:26:19 10380
Yuma 08:11:17 -34.3 Dark Down 37.9 114.5 Up 07:56:17 - 08:26:17 10330

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 120178, (2019/07/07 07:10UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 33.21 159
Markab         23:04:45.7 +15:12:18  2.5 13.83 155
37 Peg         22:29:57.9 +04:25:51  5.9  2.10 162
PPM 173268     22:38:29.3 +02:17:55  8.2  1.00 165
PPM 173222     22:35:53.0 +03:10:47 10.0  0.24 164
120178         22:36:50.3 +03:12:39 18.6       164
Positions are for J2000

Event circumstances last updated at 2018/06/12 02:22:28 UT

Marc W. Buie, Southwest Research Institute

RECON