RECON: TNO occultation with 120178

Event between (120178) 03OP32 and star UC4-467-133271 with event index number of 203383

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

J2000 position of star is 22:36:50.4 +03:12:40
Equinox of date position of star is 22:37:45.0 +03:18:16
Stellar brightness R=16.6, 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 30387.2 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 +04:31:53  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         22:37:49.9 +03:18:46 16.6       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 19.3 km RECON observability=0.5 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)
Oroville 07:14:01 -17.6 AT Down 18.5 107.1 Really Low 06:59:01 - 07:29:01 9384
Tonasket 07:14:04 -17.9 AT Down 18.6 107.1 Really Low 06:59:04 - 07:29:04 9369
Okanogan 07:14:05 -18.2 Dark Down 18.6 106.8 Really Low 06:59:05 - 07:29:05 9349
Brewster 07:14:09 -18.4 Dark Down 18.6 106.6 Really Low 06:59:09 - 07:29:09 9334
Manson/Chelan 07:14:10 -18.6 Dark Down 18.4 106.2 Really Low 06:59:10 - 07:29:10 9323
Entiat 07:14:13 -18.8 Dark Down 18.4 106.1 Really Low 06:59:13 - 07:29:13 9310
Wenatchee 07:14:14 -19.0 Dark Down 18.4 106.0 Really Low 06:59:14 - 07:29:14 9294
Ellensburg 07:14:18 -19.4 Dark Down 18.4 105.7 Really Low 06:59:18 - 07:29:18 9269
Yakima 07:14:22 -19.8 Dark Down 18.5 105.5 Really Low 06:59:22 - 07:29:22 9243
Toppenish/White Swan 07:14:22 -20.0 Dark Down 18.7 105.6 Really Low 06:59:22 - 07:29:22 9227
Pasco 07:14:19 -20.3 Dark Down 19.6 106.6 Really Low 06:59:19 - 07:29:19 9207
Goldendale 07:14:27 -20.5 Dark Down 18.6 105.1 Really Low 06:59:27 - 07:29:27 9194
PNWRO 07:14:20 -20.6 Dark Down 19.8 106.7 Really Low 06:59:20 - 07:29:20 9189
George/Umatilla 07:14:22 -20.6 Dark Down 19.5 106.3 Really Low 06:59:22 - 07:29:22 9187
The Dalles 07:14:30 -20.7 Dark Down 18.4 104.8 Really Low 06:59:30 - 07:29:30 9182
Maupin 07:14:32 -21.1 Dark Down 18.6 104.7 Really Low 06:59:32 - 07:29:32 9152
Madras/Culver 07:14:36 -21.6 Dark Down 18.7 104.5 Really Low 06:59:36 - 07:29:36 9115
Sisters 07:14:39 -21.9 Dark Down 18.5 104.1 Really Low 06:59:39 - 07:29:39 9096
Redmond 07:14:36 -22.0 Dark Down 18.7 104.4 Really Low 06:59:36 - 07:29:36 9091
Bend 07:14:41 -22.1 Dark Down 18.7 104.2 Really Low 06:59:41 - 07:29:41 9077
Oregon Observatory 07:14:41 -22.3 Dark Down 18.7 104.0 Really Low 06:59:41 - 07:29:41 9066
La Pine/Gilchrist 07:14:41 -22.5 Dark Down 18.7 103.9 Really Low 06:59:41 - 07:29:41 9053
North Lake 07:14:44 -23.0 Dark Down 19.2 104.2 Really Low 06:59:44 - 07:29:44 9016
Chiloquin 07:14:52 -23.5 Dark Down 18.7 103.3 Really Low 06:59:52 - 07:29:52 8977
Paisley 07:14:47 -23.6 Dark Down 19.6 104.3 Really Low 06:59:47 - 07:29:47 8974
Klamath Falls 07:14:53 -23.8 Dark Down 18.8 103.3 Really Low 06:59:53 - 07:29:53 8951
Lakeview 07:14:50 -24.1 Dark Down 19.9 104.3 Really Low 06:59:50 - 07:29:50 8935
Tulelake 07:14:54 -24.2 Dark Down 19.1 103.4 Really Low 06:59:54 - 07:29:54 8929
Cedarville 07:14:55 -24.8 Dark Down 20.2 104.2 Low 06:59:55 - 07:29:55 8886
Fall River/Burney 07:15:02 -25.1 Dark Down 19.4 103.2 Really Low 07:00:02 - 07:30:02 8861
Susanville 07:15:03 -25.8 Dark Down 20.1 103.5 Low 07:00:03 - 07:30:03 8807
Greenville 07:15:05 -26.0 Dark Down 20.0 103.2 Really Low 07:00:05 - 07:30:05 8789
Gimple 07:15:06 -26.0 Dark Down 20.0 103.3 Low 07:00:06 - 07:30:06 8789
Quincy 07:15:07 -26.2 Dark Down 20.0 103.1 Low 07:00:07 - 07:30:07 8774
Portola 07:15:04 -26.4 Dark Down 20.4 103.4 Low 07:00:04 - 07:30:04 8760
Reno 07:15:04 -26.8 Dark Down 21.0 103.8 Low 07:00:04 - 07:30:04 8733
Carson City 07:15:09 -27.2 Dark Down 21.1 103.7 Low 07:00:09 - 07:30:09 8706
Gardnerville 07:15:10 -27.4 Dark Down 21.2 103.6 Low 07:00:10 - 07:30:10 8686
Yerington 07:15:08 -27.5 Dark Down 21.6 104.1 Low 07:00:08 - 07:30:08 8684
Hawthorne 07:15:10 -28.0 Dark Down 22.1 104.3 Low 07:00:10 - 07:30:10 8643
Niwot 07:14:11 -27.3 Dark Down 31.2 115.1 Up 06:59:11 - 07:29:11 8617
Lee Vining 07:15:14 -28.5 Dark Down 21.9 103.7 Low 07:00:14 - 07:30:14 8603
Tonopah 07:15:06 -28.7 Dark Down 23.3 105.0 Low 07:00:06 - 07:30:06 8591
Bishop 07:15:15 -29.2 Dark Down 22.6 104.0 Low 07:00:15 - 07:30:15 8549
Beatty 07:15:14 -29.9 Dark Down 24.0 104.9 Low 07:00:14 - 07:30:14 8494
Lone Pine 07:15:20 -30.0 Dark Down 23.0 103.9 Low 07:00:20 - 07:30:20 8484
Indian Springs 07:15:12 -30.3 Dark Down 24.9 105.5 Low 07:00:12 - 07:30:12 8456
CPSLO 07:15:35 -30.8 Dark Down 21.3 101.7 Low 07:00:35 - 07:30:35 8406
Henderson 07:15:12 -30.9 Dark Down 25.6 105.7 Low 07:00:12 - 07:30:12 8405
Searchlight/Boulder City 07:15:16 -31.5 Dark Down 25.8 105.5 Low 07:00:16 - 07:30:16 8357
Patrick 07:15:12 -31.7 Dark Down 26.6 106.2 Low 07:00:12 - 07:30:12 8341
Laughlin/Bullhead City 07:15:16 -31.9 Dark Down 26.1 105.6 Low 07:00:16 - 07:30:16 8329
Kingman/Dolan Springs 07:15:14 -31.9 Dark Down 26.5 106.0 Low 07:00:14 - 07:30:14 8325
DCO 07:15:11 -32.1 Dark Down 27.2 106.6 Low 07:00:11 - 07:30:11 8307
Mohave Valley 07:15:18 -32.1 Dark Down 26.2 105.5 Low 07:00:18 - 07:30:18 8306
Wildwood 07:15:35 -32.4 Dark Down 23.2 102.5 Low 07:00:35 - 07:30:35 8284
Lake Havasu City 07:15:19 -32.5 Dark Down 26.5 105.5 Low 07:00:19 - 07:30:19 8270
Parker 07:15:21 -32.9 Dark Down 26.6 105.3 Low 07:00:21 - 07:30:21 8240
Idyllwild 07:15:29 -33.0 Dark Down 24.8 103.6 Low 07:00:29 - 07:30:29 8233
Blythe 07:15:24 -33.4 Dark Down 26.6 104.9 Low 07:00:24 - 07:30:24 8199
Calipatria 07:15:30 -33.8 Dark Down 25.9 104.1 Low 07:00:30 - 07:30:30 8168
Yuma 07:15:30 -34.3 Dark Down 26.8 104.4 Low 07:00:30 - 07:30:30 8120

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         22:36:50.4 +03:12:40 16.6       164
Positions are for J2000

Event circumstances last updated at 2017/12/06 19:06:49 UT

Marc W. Buie, Southwest Research Institute

RECON