RECON: TNO occultation with 04FU148

Event between 04FU148 and star GA0800:04961146 with event index number of 275907

Geocentric closest approach at 2020/07/20 07:13:45 UTC

J2000 position of star is 15:59:10.1 -08:32:08
Equinox of date position of star is 16:00:10.5 -08:35:15
Stellar brightness G=16.7, use SENSEUP=128
Star is 125 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=21.9

[RECON map]
TNO is 31.7 AU from the Sun and 31.2 AU from the Earth.
The TNO is moving 10.4 km/sec on the sky relative to the star, or, 1.7 arcsec/hr.
The 1-sigma error in the time of the event is 974 seconds.
The 1-sigma cross-track error in the shadow position is 5861 km.
The sky-plane scale is 22618.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 26.4 sec chord
Diameter=112.4 km assuming a 30% albedo -- 10.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 04FU148, (2020/07/20 07:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:40.3 -26:28:33  0.9 19.28 137
1Del Oph       16:15:25.5 -03:44:45  2.7  6.14 127
50 Lib         16:01:54.4 -08:28:05  5.5  0.42 126
PPM 199187     16:01:29.1 -07:51:54  8.4  0.79 125
PPM 199158     16:00:00.8 -08:32:48  9.2  0.08 125
04FU148        16:00:16.9 -08:35:35 16.7       126
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 0.9 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=0.9 and success probability=3.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Penticton 07:07:45 -18.8 Dark Down 19.4 229.1 Really Low 06:52:45 - 07:22:45 11337
Oroville 07:07:42 -19.4 Dark Down 19.7 229.3 Really Low 06:52:42 - 07:22:42 11291
Tonasket 07:07:41 -19.6 Dark Down 19.9 229.4 Really Low 06:52:41 - 07:22:41 11274
Okanogan 07:07:40 -19.9 Dark Down 20.2 229.4 Low 06:52:40 - 07:22:40 11252
Brewster 07:07:40 -20.1 Dark Down 20.5 229.2 Low 06:52:40 - 07:22:40 11236
Manson/Chelan 07:07:41 -20.3 Dark Down 20.8 229.0 Low 06:52:41 - 07:22:41 11226
Entiat 07:07:39 -20.5 Dark Down 21.0 229.0 Low 06:52:39 - 07:22:39 11211
Wenatchee 07:07:40 -20.7 Dark Down 21.2 229.0 Low 06:52:40 - 07:22:40 11194
Ellensburg 07:07:37 -21.1 Dark Down 21.6 228.9 Low 06:52:37 - 07:22:37 11167
Yakima 07:07:37 -21.5 Dark Down 21.8 229.0 Low 06:52:37 - 07:22:37 11136
Toppenish/White Swan 07:07:36 -21.7 Dark Down 21.9 229.2 Low 06:52:36 - 07:22:36 11117
Pasco 07:07:29 -22.0 Dark Down 21.3 230.3 Low 06:52:29 - 07:22:29 11086
Goldendale 07:07:37 -22.1 Dark Down 22.5 229.0 Low 06:52:37 - 07:22:37 11082
The Dalles 07:07:37 -22.3 Dark Down 22.8 228.7 Low 06:52:37 - 07:22:37 11072
George/Umatilla 07:07:28 -22.3 Dark Down 21.7 230.2 Low 06:52:28 - 07:22:28 11064
PNWRO 07:07:27 -22.3 Dark Down 21.4 230.6 Low 06:52:27 - 07:22:27 11063
Maupin 07:07:34 -22.7 Dark Down 23.0 228.9 Low 06:52:34 - 07:22:34 11037
Madras/Culver 07:07:32 -23.2 Dark Down 23.4 229.1 Low 06:52:32 - 07:22:32 10996
Sisters 07:07:34 -23.5 Dark Down 23.9 228.8 Low 06:52:34 - 07:22:34 10978
Redmond 07:07:31 -23.6 Dark Down 23.7 229.1 Low 06:52:31 - 07:22:31 10969
Bend 07:07:31 -23.7 Dark Down 23.9 229.1 Low 06:52:31 - 07:22:31 10954
Oregon Observatory 07:07:33 -23.9 Dark Down 24.1 229.0 Low 06:52:33 - 07:22:33 10943
La Pine/Gilchrist 07:07:33 -24.1 Dark Down 24.3 229.0 Low 06:52:33 - 07:22:33 10928
North Lake 07:07:26 -24.6 Dark Down 24.2 229.7 Low 06:52:26 - 07:22:26 10883
Chiloquin 07:07:28 -25.0 Dark Down 25.2 229.1 Low 06:52:28 - 07:22:28 10846
Paisley 07:07:19 -25.2 Dark Down 24.4 230.2 Low 06:52:19 - 07:22:19 10832
Klamath Falls 07:07:26 -25.4 Dark Down 25.4 229.3 Low 06:52:26 - 07:22:26 10817
Tulelake 07:07:24 -25.7 Dark Down 25.4 229.6 Low 06:52:24 - 07:22:24 10789
Lakeview 07:07:19 -25.7 Dark Down 24.6 230.5 Low 06:52:19 - 07:22:19 10787
Cedarville 07:07:15 -26.4 Dark Down 24.9 230.9 Low 06:52:15 - 07:22:15 10730
Fall River/Burney 07:07:20 -26.6 Dark Down 25.9 230.0 Low 06:52:20 - 07:22:20 10713
Susanville 07:07:12 -27.4 Dark Down 25.9 230.9 Low 06:52:12 - 07:22:12 10647
Greenville 07:07:12 -27.6 Dark Down 26.3 230.7 Low 06:52:12 - 07:22:12 10630
Gimple 07:07:15 -27.6 Dark Down 26.2 230.8 Low 06:52:15 - 07:22:15 10628
Quincy 07:07:15 -27.8 Dark Down 26.4 230.8 Low 06:52:15 - 07:22:15 10613
Portola 07:07:11 -28.0 Dark Down 26.2 231.3 Low 06:52:11 - 07:22:11 10593
Reno 07:07:07 -28.4 Dark Down 26.0 231.9 Low 06:52:07 - 07:22:07 10558
Carson City 07:07:05 -28.7 Dark Down 26.2 232.1 Low 06:52:05 - 07:22:05 10527
Gardnerville 07:07:04 -29.0 Dark Down 26.3 232.2 Low 06:52:04 - 07:22:04 10506
Yerington 07:07:02 -29.0 Dark Down 25.9 232.7 Low 06:52:02 - 07:22:02 10499
Hawthorne 07:06:57 -29.6 Dark Down 25.9 233.3 Low 06:51:57 - 07:21:57 10449
Lee Vining 07:06:57 -30.0 Dark Down 26.5 233.1 Low 06:51:57 - 07:21:57 10410
Tonopah 07:06:48 -30.3 Dark Down 25.3 234.7 Low 06:51:48 - 07:21:48 10381
Bishop 07:06:52 -30.7 Dark Down 26.4 234.0 Low 06:51:52 - 07:21:52 10343
Niwot 07:06:01 -29.3 Dark Down 16.4 243.3 Really Low 06:51:01 - 07:21:01 10334
Beatty 07:06:43 -31.5 Dark Down 25.7 235.5 Low 06:51:43 - 07:21:43 10271
Lone Pine 07:06:47 -31.5 Dark Down 26.7 234.5 Low 06:51:47 - 07:21:47 10270
Indian Springs 07:06:35 -32.0 Dark Down 25.2 236.4 Low 06:51:35 - 07:21:35 10220
CPSLO 07:06:58 -32.2 Dark Down 29.1 232.9 Low 06:51:58 - 07:21:58 10207
Henderson 07:06:29 -32.6 Dark Down 25.0 237.2 Low 06:51:29 - 07:21:29 10159
Searchlight/Boulder City 07:06:27 -33.2 Dark Down 25.3 237.5 Low 06:51:27 - 07:21:27 10106
Patrick 07:06:21 -33.4 Dark Down 24.6 238.3 Low 06:51:21 - 07:21:21 10080
Laughlin/Bullhead City 07:06:24 -33.5 Dark Down 25.2 237.8 Low 06:51:24 - 07:21:24 10072
Kingman/Dolan Springs 07:06:21 -33.6 Dark Down 24.8 238.2 Low 06:51:21 - 07:21:21 10064
Wildwood 07:06:43 -33.9 Dark Down 28.5 235.1 Low 06:51:43 - 07:21:43 10056
Mohave Valley 07:06:25 -33.8 Dark Down 25.3 238.0 Low 06:51:25 - 07:21:25 10047
DCO 07:06:17 -33.8 Dark Down 24.3 238.9 Low 06:51:17 - 07:21:17 10038
Lake Havasu City 07:06:21 -34.2 Dark Down 25.4 238.3 Low 06:51:21 - 07:21:21 10006
Idyllwild 07:06:31 -34.6 Dark Down 27.4 236.8 Low 06:51:31 - 07:21:31 9985
Parker 07:06:20 -34.6 Dark Down 25.6 238.5 Low 06:51:20 - 07:21:20 9973
Blythe 07:06:21 -35.1 Dark Down 26.0 238.4 Low 06:51:21 - 07:21:21 9931
Calipatria 07:06:23 -35.4 Dark Down 27.0 237.9 Low 06:51:23 - 07:21:23 9905
Yuma 07:06:17 -36.0 Dark Down 26.6 238.8 Low 06:51:17 - 07:21:17 9846

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 04FU148, (2020/07/20 07:14UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.28 137
1Del Oph       16:14:20.7 -03:41:42  2.7  6.14 127
50 Lib         16:00:47.6 -08:24:41  5.5  0.42 126
PPM 199187     16:00:22.6 -07:48:29  8.4  0.79 125
PPM 199158     15:58:54.0 -08:29:22  9.2  0.08 125
04FU148        15:59:10.1 -08:32:08 16.7       125
Positions are for J2000

Event circumstances last updated at 2018/08/01 17:57:42 UT

Marc W. Buie, Southwest Research Institute

RECON