RECON: TNO occultation with 03YJ179

Event between 03YJ179 and star GA1140:02044726 with event index number of 1074267

Geocentric closest approach at 2021/12/28 11:55:32 UTC

J2000 position of star is 06:15:47.5 +24:42:05
Equinox of date position of star is 06:17:01.9 +24:41:36
Stellar brightness G=14.5, use SENSEUP=128
Star is 111 degrees from the moon. Moon is 35% illuminated.
TNO apparent brightness V=26.0

[RECON map]
TNO is 40.3 AU from the Sun and 39.4 AU from the Earth.
The TNO is moving 25.4 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 415 seconds.
The 1-sigma cross-track error in the shadow position is 1780 km.
The sky-plane scale is 28541.2 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=235.5 km assuming a 5% albedo -- 2.4 sec chord
Diameter=96.1 km assuming a 30% albedo -- 1.0 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 03YJ179, (2021/12/28 11:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:21.8 +07:24:34  0.4 17.98 116
Alhena         06:38:58.9 +16:22:43  1.9  9.76 106
9 Gem          06:18:19.2 +23:43:54  6.1  1.00 111
8 Gem          06:17:39.7 +23:57:40  6.9  0.74 111
PPM 095655     06:16:28.7 +25:04:23  9.8  0.41 111
PPM 095653     06:16:25.4 +24:32:49 10.2  0.22 111
03YJ179        06:17:08.6 +24:41:33 14.5       111
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 2.2 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=1.0 and success probability=21.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 11:53:14 -37.6 Dark Up 36.3 265.9 Up 11:38:14 - 12:08:14 403
Kelowna 11:53:13 -37.7 Dark Up 36.4 266.0 Up 11:38:13 - 12:08:13 367
Peachland 11:53:13 -37.9 Dark Up 36.6 265.9 Up 11:38:13 - 12:08:13 350
Summerland 11:53:13 -37.9 Dark Up 36.6 266.0 Up 11:38:13 - 12:08:13 341
Penticton 11:53:13 -37.8 Dark Up 36.5 266.2 Up 11:38:13 - 12:08:13 339
Oliver 11:53:11 -37.9 Dark Up 36.5 266.4 Up 11:38:11 - 12:08:11 310
Anarchist Mountain Observatory 11:53:11 -37.8 Dark Up 36.4 266.7 Up 11:38:11 - 12:08:11 302
Tonasket 11:53:10 -37.9 Dark Up 36.5 266.9 Up 11:38:10 - 12:08:10 275
Okanogan 11:53:09 -38.0 Dark Up 36.6 267.0 Up 11:38:09 - 12:08:09 243
Brewster 11:53:09 -38.2 Dark Up 36.8 267.1 Up 11:38:09 - 12:08:09 215
Manson/Chelan 11:53:09 -38.5 Dark Up 37.0 266.9 Up 11:38:09 - 12:08:09 187
Entiat 11:53:08 -38.5 Dark Up 37.1 267.0 Up 11:38:08 - 12:08:08 167
Victoria 11:53:15 -40.5 Dark Up 39.1 263.9 Up 11:38:15 - 12:08:15 150
Wenatchee 11:53:07 -38.6 Dark Up 37.2 267.2 Up 11:38:07 - 12:08:07 143
Ellensburg 11:53:06 -38.8 Dark Up 37.3 267.3 Up 11:38:06 - 12:08:06 103
Pasco 11:53:02 -37.9 Dark Up 36.4 268.9 Up 11:38:02 - 12:08:02 81
Yakima 11:53:05 -38.9 Dark Up 37.4 267.6 Up 11:38:05 - 12:08:05 68
PNWRO 11:53:01 -37.8 Dark Up 36.2 269.2 Up 11:38:01 - 12:08:01 68
Toppenish/White Swan 11:53:05 -38.8 Dark Up 37.3 267.9 Up 11:38:05 - 12:08:05 54
Niwot 11:52:29 -27.7 Dark Up 25.8 281.5 Low 11:37:29 - 12:07:29 23
SwRI 11:52:29 -27.8 Dark Up 25.8 281.5 Low 11:37:29 - 12:07:29 10
Goldendale 11:53:04 -39.2 Dark Up 37.6 268.0 Up 11:38:04 - 12:08:04 -5
The Dalles 11:53:03 -39.4 Dark Up 37.8 267.9 Up 11:38:03 - 12:08:03 -35
Maupin 11:53:02 -39.4 Dark Up 37.8 268.3 Up 11:38:02 - 12:08:02 -67
Redmond 11:53:00 -39.6 Dark Up 37.9 268.9 Up 11:38:00 - 12:08:00 -148
Sisters 11:53:00 -39.9 Dark Up 38.2 268.6 Up 11:38:00 - 12:08:00 -158
Bend 11:52:59 -39.7 Dark Up 38.0 269.0 Up 11:37:59 - 12:07:59 -171
Oregon Observatory 11:52:59 -39.8 Dark Up 38.1 269.0 Up 11:37:59 - 12:07:59 -190
La Pine/Gilchrist 11:52:59 -39.9 Dark Up 38.1 269.1 Up 11:37:59 - 12:07:59 -209
North Lake 11:52:57 -39.5 Dark Up 37.7 269.9 Up 11:37:57 - 12:07:57 -229
Paisley 11:52:55 -39.2 Dark Up 37.4 270.6 Up 11:37:55 - 12:07:55 -266
Lakeview 11:52:53 -39.1 Dark Up 37.3 271.1 Up 11:37:53 - 12:07:53 -305
Klamath Falls 11:52:55 -40.2 Dark Up 38.4 270.1 Up 11:37:55 - 12:07:55 -346
Cedarville 11:52:51 -39.0 Dark Up 37.2 271.7 Up 11:37:51 - 12:07:51 -358
Fall River/Burney 11:52:52 -40.0 Dark Up 38.1 271.3 Up 11:37:52 - 12:07:52 -440
Susanville 11:52:49 -39.5 Dark Up 37.5 272.2 Up 11:37:49 - 12:07:49 -473
Gimple 11:52:48 -39.6 Dark Up 37.6 272.3 Up 11:37:48 - 12:07:48 -505
Greenville 11:52:49 -39.7 Dark Up 37.7 272.2 Up 11:37:49 - 12:07:49 -507
Portola 11:52:47 -39.3 Dark Up 37.3 272.8 Up 11:37:47 - 12:07:47 -521
Reno 11:52:45 -38.8 Dark Up 36.8 273.4 Up 11:37:45 - 12:07:45 -524
Quincy 11:52:48 -39.7 Dark Up 37.7 272.4 Up 11:37:48 - 12:07:48 -525
Yerington 11:52:43 -38.3 Dark Up 36.3 274.2 Up 11:37:43 - 12:07:43 -553
Carson City 11:52:44 -38.8 Dark Up 36.8 273.7 Up 11:37:44 - 12:07:44 -556
Tonopah 11:52:38 -36.8 Dark Up 34.7 275.9 Up 11:37:38 - 12:07:38 -572
Gardnerville 11:52:44 -38.8 Dark Up 36.7 273.9 Up 11:37:44 - 12:07:44 -577
Hawthorne 11:52:41 -37.9 Dark Up 35.8 274.8 Up 11:37:41 - 12:07:41 -578
Lee Vining 11:52:40 -38.3 Dark Up 36.2 274.9 Up 11:37:40 - 12:07:40 -645
Indian Springs 11:52:32 -35.5 Dark Up 33.3 277.8 Up 11:37:32 - 12:07:32 -654
Beatty 11:52:34 -36.4 Dark Up 34.2 277.0 Up 11:37:34 - 12:07:34 -662
Bishop 11:52:38 -37.7 Dark Up 35.6 275.8 Up 11:37:38 - 12:07:38 -676
Henderson 11:52:29 -34.9 Dark Up 32.7 278.5 Up 11:37:29 - 12:07:29 -679
Patrick 11:52:26 -34.0 Dark Up 31.7 279.4 Up 11:37:26 - 12:07:26 -696
DCO 11:52:25 -33.4 Dark Up 31.1 279.9 Up 11:37:25 - 12:07:25 -698
Kingman/Dolan Springs 11:52:26 -34.1 Dark Up 31.8 279.4 Up 11:37:26 - 12:07:26 -723
Searchlight/Boulder City 11:52:28 -34.8 Dark Up 32.6 278.8 Up 11:37:28 - 12:07:28 -729
Laughlin/Bullhead City 11:52:27 -34.5 Dark Up 32.3 279.2 Up 11:37:27 - 12:07:27 -744
Mohave Valley 11:52:26 -34.5 Dark Up 32.2 279.4 Up 11:37:26 - 12:07:26 -769
George/Scottsdale 11:52:20 -32.1 Dark Up 29.8 281.3 Low 11:37:20 - 12:07:20 -778
Lake Havasu City 11:52:25 -34.2 Dark Up 31.9 279.7 Up 11:37:25 - 12:07:25 -797
Parker 11:52:24 -34.2 Dark Up 31.9 280.0 Up 11:37:24 - 12:07:24 -828
Blythe 11:52:23 -34.4 Dark Up 32.0 280.1 Up 11:37:23 - 12:07:23 -888
CPSLO 11:52:37 -39.5 Dark Up 37.2 276.1 Up 11:37:37 - 12:07:37 -944
Idyllwild 11:52:27 -36.1 Dark Up 33.8 279.1 Up 11:37:27 - 12:07:27 -953
Calipatria 11:52:23 -35.1 Dark Up 32.7 280.0 Up 11:37:23 - 12:07:23 -968
Yuma 11:52:21 -34.3 Dark Up 31.9 280.7 Up 11:37:21 - 12:07:21 -975
Wildwood 11:52:30 -37.7 Dark Up 35.4 278.0 Up 11:37:30 - 12:07:30 -987

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 03YJ179, (2021/12/28 11:56UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.98 116
Alhena         06:37:42.8 +16:23:57  1.9  9.76 106
9 Gem          06:16:58.7 +23:44:27  6.1  1.00 111
8 Gem          06:16:19.0 +23:58:13  6.9  0.74 111
PPM 095655     06:15:07.4 +25:04:53  9.8  0.41 111
PPM 095653     06:15:04.4 +24:33:19 10.2  0.22 111
03YJ179        06:15:47.5 +24:42:05 14.5       111
Positions are for J2000

Event circumstances last updated at 2020/03/08 23:05:09 UT

Marc W. Buie, Southwest Research Institute

RECON